06.1 - 1403 Hardouin Ave - Drawings & Photos — original pdf

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April 10, 2026 APPLICATION FOR HISTORIC REVIEW Catterall-Thornberry House 1403 Hardouin Ave. Austin, TX 78703 HISTORIC DESIGNATION OVERVIEW • National Register Historic District: Old West Austin National Historic District • City of Austin Historic Landmark ARCHITECTURE The Catterall-Thornberry House is a 1938 Colonial Revival home designed by Louis. C. Page, Jr., one of the founders of the firm that would eventually become PageSoutherlandPage (later Page now Stantec). The original home underwent a renovation in 1979 that included the addition of the current accessory garage structure, for which an application to demolish has already been submitted to the Historic Landmark Commission. The proposed new construction to be considered is an accessory structure with a garage, home office, workout room, and garden room. The new design’s form works carefully within the limitations of the site. A protected cedar elm, utility easements from rear powerlines and underground electrical utilities on the driveway access placed strict limitations on the area which could reasonably be built upon. The resultant angled form works itself around the large tree and utility features. The design tucks the structure behind the existing house to preserve the appearance of the historic property from the street in the same manner as the existing, non-historic detached garage (demolition permit has been filed separately). The street view is additionally shielded by a large magnolia tree and shrubbery that sits between the Catterall-Thornberry House and the neighboring home, which blocks views into the rear yard around the side of the house when viewed from an angle. The new structure also reflects the angle of the existing garage which we found was necessary to allow space for car pull-out and to maintain the current level of impact on the root zone of the historic tree. The scale of the new structure works with the historic design guidelines, with the height not exceeding the apex of the original structure. The gabled roof’s slope and orientation reflects that of the original house in a contemporary language. The vertical Hardi siding will reflect the material scale of the wood siding of the historic house but turned 90 degrees. The shadowy grey-green of the exterior will serve to help the building recede visually under the trees in the backyard. The oculus allows a major limb of the historic tree to pass through the roof. Pollen Architecture & Design 1224 East 12th St, #210 Austin, TX 78702 512.499.0888 pollenarchitecture.com ABBREVIATIONS: 3D PERSPECTIVE SHEET INDEX: HLC REVIEW # A.B. A/C A.C.T. ADDL AEGB AFF AHU AHJ ALUM ANOD A.O. AP APP'VD APP'VL APPROX ARCH ASSY AVG BD BL BLDG BLKG BM B.O. CAB CANT. CDR CEL CERT CF CH CIRC CL C.L. CLG CLR CMU CNC COA CODE COL COMP CONC C.U. CONT CR CRZ CT CTR CXN DEPT DET DIA DIM DN DR DS DWG ELEC ELEV ENG ENLG EQ EQUIP EXH EXP EXT FA FAR F.C. FCU FD FDN FEC FF FG FIL FIN FIXT FLR F.O. F.P. FR.D. FR FSC FT GALV GB GC GENL GL GR GRD GSM GWB H/W HC HD HDR HH HOL HORIZ HR HT I.B. ICF ID IN INCL INS INT NUMBER AIR BARRIER AIR CONDITIONING ACOUSTIC CEILING TILE ADDITIONAL AUSTIN ENERGY GREEN BUILDING PROGRAM ABOVE FINISH FLOOR AIR HANDLING UNIT AUTHORITIES HAVING JURISDICTION ALUMINUM ANODIZED AUTOMATIC DOOR OPENER ACCESS PANEL APPROVED APPROVAL APPROXIMATELY ARCHITECT ASSEMBLY AVERAGE BOARD BUILDING LINE BUILDING BLOCKING BEAM BOTTOM OF CABINET CANTILEVER CEDAR CELLULOSE CERTIFIED COMPACT FLOURESCENT CHANNEL CIRCUIT CLOSET CENTER LINE CEILING CLEAR CONCRETE MASONRY UNIT COMPUTER NUMERICALLY CONTROLLED CITY OF AUSTIN APPLICABLE CODE COLUMN COMPUTER CONCRETE CONDENSING UNIT CONTINUOUS SECURITY ACCESS CARD READER CRITICAL ROOT ZONE CERAMIC TILE CENTER CONNECTION DEPARTMENT DETAIL DIAMETER DIMENSION DOWN DOOR DOWNSPOUT DRAWING ELECTRICAL ELEVATION ENGINEER, ENGINEERED ENLARGED EQUAL EQUIPMENT EXHAUST FAN EXPANSION EXTERIOR FIRE ALARM PULL STATION FLOOR AREA RATIO FIBER CEMENT FAN COIL UNIT FLOOR DRAWN FOUNDATION FIRE EXTINGUISHER CABINET FINISH FLOOR FIBERGLASS, FINISH GRADE FILTER FINISH FIXTURE FLOOR FACE OF FIRE ALARM PANEL FRENCH DRAIN FRAMING FOREST STEWARDSHIP COUNCIL CERTIFIED FOOT GALVANIZED GRADE BEAM GENERAL CONTRACTOR GENERAL GLASS, GLAZED GUARD RAIL GROUND GALVALUME SHEET METAL GYPSUM WALL BOARD HARDWARE HANDICAP, HOLLOW CORE HEAD HEADER HEAD HEIGHT HOLLOW HORIZONTAL HAND RAIL HEIGHT IGNITION BARRIER INSULATED CONCRETE FORM INSIDE DIAMETER INCH INCLUDES, INCLUDING INSULATION, INSULATE INTERIOR ISO IT JST JT L LA LAM LAV LBS LG LS LOC LT MAN. MAS MAT'L MAX MB MD MDF MDO MECH MED MFR MIN MISC MTD MTL NG NIC NO. NOM NTS OA OC OD OH OPG OPP ORD OTO PC PEN. PERF PERSP PL PLAM PLMG PLYWD POLY PR PSI PT PTD QTR R RA RAG RCP RE: REINF REQ RM RO SA S.A.F. S.A.M. SC SCHED SD SEC SECT SEQ SH SIM SIP SK SM S.P.F. SPEC SS SSD STD STG STL STR STRUCT SUSP SYP T TEL TEMP T&G THRU T.O. TOC T.O.D. TYP U UNO VERT VB VIF W W/ WC WD WH WIN WP WR W.R.B. X ISOMETRIC DRAWING, ISOLATION COMMUNICATIONS EQUIPMENT JOIST JOINT METAL ANGLE, LENGTH LANDSCAPE ARCHITECT LAMINATE LAVATORY POUNDS LONG, LARGE LANDSCAPE, LANDSCAPING LOCATION LIGHT MANUAL MASONRY MATERIAL MAXIMUM MACHINE BOLT MOTION DETECTOR MEDIUM DENSITY FIBERBOARD MEDIUM DENSITY OVERLAY PLYWOOD MECHANICAL MEDIUM MANUFACTURER MINIMUM MISCELLANEOUS MOUNTED METAL NATURAL GRADE NOT IN CONTACT NUMBER NOMINAL NOT TO SCALE OUTSIDE AIR ON CENTER OUTSIDE DIAMETER OVERHEAD OPENING OPPOSITE ORDINANCE OUTSIDE TO OUTSIDE POLYCARBONATE PENETRATE, PENETRATION PERFORATED PERSPECTIVE DRAWING PROPERTY LINE, PLATE PLASTIC LAMINATE PLUMBING PLYWOOD POLYETHYLENE PAIR POUNDS PER SQUARE INCH PRESSURE-TREATED, PAPER TOWEL DISPENSER PAINTED QUARTER REFRIGERATOR RETURN AIR RETURN AIR GRILL REFLECTED CEILING PLAN REFER REINFORCE REQUIRED ROOM ROUGH OPENING SUPPLY AIR SEFL ADHERED FLASHING SELF ADHERED MEMBRANE SOLID CORE SCHEDULE SMOKE DETECTOR SECURITY SECTION SEQUENCE SILL HEIGHT SIMILAR BUT NOT IDENTICAL STRUCTURAL INSULATED PANEL SKETCH SHEET METAL, SMALL SPRAY POLYURETHANE FOAM SPECIFICATIONS STAINLESS STEEL SEE STRUCTURAL DRAWINGS STANDARD STORAGE STEEL STAIR STRUCTURAL SUSPENDED SOUTHERN YELLOW PINE TREAD TELEPHONE TEMPERED TONGUE AND GROOVE THROUGH TOP OF TOP OF CURB TOP OF DECK TYPICAL U-FACTOR UNLESS NOTED OTHERWISE VERTICAL VAPOR RETARDER (BARRIER) VERIFY IN FEILD WIDTH WITH WATER CLOSET WOOD WATER HEATER WINDOW WATERPROOF WATER RESISTANT WATER RESISTIVE BARRIER CROSS, BY ARCHITECTURE COVER A000 GENERAL NOTES A001 GENERAL NOTES CONT. A002 SURVEY A003 DEMOLITION SITE PLAN A009 SITE PLAN A100 FOUNDATION PLAN A100F ANNOTATION PLAN - LEVEL 01 A101 DIMENSION PLAN - LEVEL 01 A101D ANNOTATION PLAN - LEVEL 02 A102 DIMENSION PLAN - LEVEL 02 A102D ROOF PLAN A103 EXTERIOR ELEVATIONS A200 EXTERIOR ELEVATIONS A201 EXTERIOR ELEVATIONS - EXISTING HOUSE A202 BUILDING SECTIONS A300 EXISTING LANDMARK INFORMATION A700 MATERIAL PALETTE A701 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue MCCONNICO BACKYARD BUILDING NOTE: RENDERING CONVEYS ATMOSPHERIC QUALITY ONLY. REFER TO ELEVATIONS FOR SIZES, DIMENSIONS, ALIGNMENTS AND MATERIAL SELECTIONS. SYMBOLS LEGEND: GENERAL INFORMATION: DESIGN CRITERIA: 2024 INTERNATIONAL RESIDENTIAL CODE (IRC) 2024 INTERNATIONAL ENERGY CONSERVATION CODE (IECC) 2024 INTERNATIONAL PROPERTY MAINTENANCE CODE (IPMC) 2023 NATIONAL ELECTRICAL CODE (NEC) 2024 UNIFORM MECHANICAL CODE (UMC) 2024 UNIFORM PLUMBING CODE (UPC) ALL APPLICABLE CITY OF AUSTIN AMENDMENTS CONSTRUCTION TYPE: TYPE V: WOOD STUD FRAME EXTERIOR BUILDING MATERIALS: BACKYARD BUILDING - FOUNDATION: (E) SLAB ON GRADE, PROPOSED CONCRETE FOUNDATION TBD, WALLS: WOOD STRUCTURE, FIBER CEMENT CLADDING, ROOF: STANDING SEAM METAL ROOF OVER WOOD RAFTERS FIRE PROTECTION: THIS BUILDING IS NOT PROTECTED BY AN AUTOMATIC FIRE SPRINKLER SYSTEM. FLOOD PLAIN: N/A 1 A101 1 A101 1 SIM 1 A101 1 1 1 A101 1 A101 0 E-8 1i 101 DS (E) 1 VIEW TITLE EXTERIOR ELEVATION CALLOUT INTERIOR ELEVATION BUILDING SECTION WALL SECTION GRID LINE ELEVATION LEVEL WALL TYPE WINDOW TAG DOOR TAG CENTERLINE DOWNSPOUT EXISTING REVISION NUMBER AUTHORITIES HAVING JURISDICTION: CITY OF AUSTIN FULL PURPOSE LEGAL DESCRIPTION: LOT 13 & E 20FT LOT 14, BLOCK 3 PEMBERTON HEIGHTS SECTION 1 TRAVIS COUNTY, TEXAS ZONING: SF3-H-NP, SF-3-NP SITE AREA: 14,070 SQ. FT. 0.323 AC. PROJECT DESCRIPTION: NEW GARAGE WITH ACCESSORY SPACE BUILDING SQUARE FOOTAGES: (E) HOUSE: 3,572 GSF (N) BACKYARD BUILDING: 4856.55 GSF 1898.19 SF TOTAL BUILDING AREA LEVEL 1 CONDITIONED AREA : 348 SF LEVEL 1 GARAGE : 486.15 - 200 SF EXEMPTION = 286.15 SF *EXEMPTION3.3.2 B2A LEVEL 1 COVERED OUTDOOR AREA : 200 SF LEVEL 2 CONDITIONED AREA : 650.4 SF LEVEL 2 COVERED DECK : 214 SF IMPERVIOUS COVER: (E) 4,817 SQ. FT. (0.111 AC) = 34.24% COVERAGE (E) CONCRETE DRIVE TO BE DEMOLISHED: 682 SQ. FT. (E) DETACHED GARAGE WITH STOOPS TO BE DEMOLISHED: 677 SQ. FT. (N) 5,178 SQ. FT. (0.118 AC) = 36.80% COVERAGE (N CONCRETE DRIVE) 665 SQ. FT. (N BACKYARD BUILDING FOOTPRINT) 1034 SQ. FT (N HVAC PAD) 21 SQ. FT. CITY OF AUSTIN HISTORIC LANDMARK: CATTERALL-THORNBERRY HOUSE NATIONAL REGISTER HISTORIC DISTRICT: OLD WEST AUSTIN OWNER: STEPHEN AND LESLIE MCCONNICO 1403 HARDOUIN AVE. AUSTIN, TX 78703 ARCHITECT: POLLEN ARCHITECTURE & DESIGN 1224 EAST 12TH ST., SUITE 210 AUSTIN, TX 78702 512-499-0888 WWW.POLLENARCHITECTURE.COM STRUCTURAL ENGINEER: STEINMAN LUEVANO STRUCTURES 5901 OLD FREDERICKSBURG RD. B101 AUSTIN, TX 78749 512-891-6766 INFO@SLSTRUCTURES.COM GENERAL CONTRACTOR: TOMMY HUDSON HUDSON CUTOM HOMES TOMMY@HUDSONCH.COM 512-917-4371 VICINITY MAP: 1403 HARDOUIN AVE Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title COVER A000 DEMOLITION PLAN NOTES: 1. 2. 3. 4. 5. 6. ALL EXISTING CONDITIONS DRAWN FROM ORIGINAL PLANS DATED 10/31/2025 REMOVE / RELOCATE EXISTING PIPING AND ELECTRICAL AS REQUIRED TO ACCOMODATE NEW WORK. DEMO (E) STRUCTURE AS REQUIRED BY ENGINEER. BRACE AND SHORE AS REQUIRED BY ENGINEER. ALL DEMO WORK NECESSARY TO COMPLETE NEW WORK AS SHOWN IN CONTRACT DOCUMENTS TO BE INCLUDED, EVEN IF NOT SPECIFICALLY CALLED OUT ON THIS DRAWING. CRITICAL DIMENSIONS SHOULD BE VERIFIED IN FIELD. NOTIFY ARCHITECT OF ANY DISCREPANCIES. DEMO (E) ELECTRICAL FIXTURES TO BE REPLACED WITH NEW FIXTURES. 7. PROVIDE TREE PROTECTION FOR (E) TREES AS NECESSARY. KEY DEMO WALLS EXISTING WALLS NEW WALLS HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title DEMOLITION SITE PLAN A009 (E) MAIN HOUSE, NO WORK DONE 4 BED, 5 BATH 3572 GSF DEMO (E) DRIVEWAY AS REQ. FOR BACKYARD BUILDING AND PROPOSED DRIVEWAY AREA DEMO (E) PADS AND WALKWAYS DEMO (E) DETACHED GARAGE (E) TREE TO REMAIN (E) POOL AND DECK TO REMAIN 1 SITE DEMO PLAN Scale: 3/32" = 1'-0" SITE PLAN GENERAL NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. SITE PLAN DRAWN FROM SURVEY DATED 10/31/2025 CONTRACTOR RESPONSIBLE FOR VERIFYING ALL EXISTING CONDITIONS. DO NOT SCALE DRAWINGS. SCOPE INCLUDES NO NEW GRADING. NO EXISTING TREES WILL BE REMOVED. TREE LOCATIONS ARE APPROXIMATE AND SHOWN FOR REFERENCE. REQUIRED PROTECTION TO BE IN PLACE PER CITY CODE. THERE ARE NO EXISTING TREES OF 19" OR GREATER ON OTHER SIDE OF PROPERTY LINE, UNLESS NOTED OTHERWISE. CRZ OF TREES OVER 19" DIAMETER IMPACTED BY CONSTRUCTION WILL BE ADDRESSED AND MANAGED PER COA ARBORIST GUIDANCE. MATERIAL STAGING & DUMPSTER NOT TO BE WITHIN 1/2 CRZ OF TREES. PORTABLE TOILET AND WASHOUT NOT TO BE WITHIN FULL CRZ OF TREES. ANY WORK THAT INVOLVES CUTTING OR DAMAGE TO EXISTING CONDITIONS SHALL BE REPAIRED TO MATCH EXISTING. LOCATE AND MARK ALL UTILITIES PRIOR TO CONSTRUCTION. NOTIFY UNDERGROUND UTILITY COMPANIES 48 HOURS PRIOR TO ANY EXCAVATION. REPAIR ANY DAMAGED UTILITY LINES AT CONTRACTOR'S EXPENSE. CONFIRM WITH ARCHITECT/OWNER LOCATION OF STAGING AREA AND CONSTRUCTION FENCE. VERIFY THAT STAGING AREA IS FREE OF OBSTACLES AND UTILITIES. CONTRACTOR STAGING AREA REQUIRES FENCING. THE CONTRACTOR SHALL PROVIDE SIGNAGE, TAPE BARRICADE AND/OR WARNING LIGHTS AS REQUIRED TO DESIGNATE THESE AREAS. PROVIDE FOR PUBLIC SAFETY AT ALL TIMES ON CONSTRUCTION SITE. CONSTRUCTION MATERIALS SHALL BE DELIVERED VIA PATH AND SITE ENTRANCE DETERMINED IN PRE-CONSTRUCTION MEETING. THE LIMITS OF CONSTRUCTION SHALL INCLUDE, BUT NOT BE LIMITED TO 12 FEET OUTSIDE OF ANY CONSTRUCTED OR RENOVATED AREA AND NOT TO EXTEND BEYOND THE PROPERTY LINE. INDICATED 10'-9 1/2" FINISH FLOOR ELEVATION IS A REFERENCE ELEVATION. ACTUAL FINISH FLOOR ELEVATION ABOVE SEA LEVEL DIFFERS. AREA NOTES: 1. IMPERVIOUS COVER: 4817 SQ FT EXISTING = 0.111 AC, 34.24 % COVERAGE LOT 14,070 SQ FT =1,307.146 SQUARE METERS 0.323 AC IMPERVIOUS COVER LIMIT: 45% =0.45 = 6331.5 SQ FT 6,331.5 SQ FT - 4,817 SQ FT = CAN ADD 1,514.5 SQ FT 2. FAR: 4212 GSF EXISTING (3572 MAIN HOUSE + 640 GARAGE) -> 4,212/14,070 = 0.299 FAR FAR LIMIT: 0.4 -> 0.4-0.299= 0.11 REMAINING 14,070 X 0.11 = 1547.7 SQ FT 1547.7 SQ FT + 640 SQ FT = CAN ADD 2187 SQ FT 1 A202 (E) MAIN HOUSE, NO WORK DONE 4 BED, 5 BATH 3572 GSF 2 A202 " 0 - ' 1 / " 2 / 1 2 BACKYARD BUILDING 1535 GSF T694 5' - 0" 9' - 10 1/4" 2 1/2" / 1'-0" (E) PROTECTED TREE W/ LIMB EXTENDING THROUGH NEW ROOF OCULUS (E) ASPHALT DRIVE (E) POOL FENCE AND GATE (E) CONCRETE DRIVE, EXPANDED (E) GARAGE FOOTPRINT, TO BE REMOVED EXTEND (E) DRIVEWAY NEW HVAC PAD (E) ELECTRICAL RACK UTILITY EASEMENT, V.I.F. (E) UTILITY POLE 1 SITE PLAN Scale: 1" = 10'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue (E) WD DECKING TO BE REPLACED IN KIND (E) POOL DECK TO REMAIN (E) BLOCK FENCE TO REMAIN SID E Y A R D S E T B A C K P R O P E R T Y LIN E (E) POOL TO REMAIN 5' - 0" 10' - 0" REAR YARD SETBACK (E) WOOD FENCE (E) PLANTER TO REMAIN Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title SITE PLAN A100 FOUNDATION PLAN NOTES: 1. 2. COORDINATE SLAB PENETRATIONS WITH ALL TRADES. CONTRACTOR SHALL FOLLOW SLAB VAPOR BARRIOR SYSTEM'S MANUFACTURER'S INSTRUCTIONS FOR SEALING SLAB PENETRATIONS WITH ADHESIVE FLASHING. LEGEND TOILET ROUGH-IN SINK ROUGH-IN SHOWER ROUGH-IN WASHER ROUGH-IN QUAD FLOOR RECEPTACLE " 4 / 3 2 - ' 7 9' - 1" " 8' - 5 1 " /4 1' - 4 3 3 20' - 3 3/4" " 2 - ' 4 1 10' - 10 1/2" " 2 3' - 9 1/ 10" 604' - 1 1/2" 604' - 3" " 9' - 8 1 " 2 - ' 2 2 6 ' - 8 " 603' - 9" HVAC PAD 3' - 2" 20' - 3 3/4" FLOOR DRAIN IN GARDEN RM SINK ROUGH IN 1 BACKYARD BUILDING - FOUNDATION PLAN Scale: 1/4" = 1'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title FOUNDATION PLAN A100F FLOOR PLAN GENERAL NOTES: 1. 2. 3. 4. PERFORM ALL WORK IN ACCORDANCE WITH CITY OF AUSTIN CODES AND ORDINANCES. DO NOT SCALE DRAWINGS. CONTACT ARCHITECT UPON DISCOVERY OF MISSING INFORMATION OR CONFLICTS IN DRAWINGS. CONTACT ARCHITECT WITH ANY FRAMING QUESTIONS OR DISCREPANCIES. VERIFY ALL DIMENSIONS PRIOR TO CONSTRUCTION. NOTIFY THE ARCHITECT OF ANY DISCREPANCIES. ANY WORK THAT INVOLVES DAMAGE TO EXISTING CONDITIONS SHOULD BE REPAIRED TO MATCH EXISTING. AREA NOTES: 1. IMPERVIOUS COVER: 4817 SQ FT EXISTING = 0.111 AC, 34.24 % COVERAGE LOT 14,070 SQ FT =1,307.146 SQUARE METERS 0.323 AC IMPERVIOUS COVER LIMIT: 45% =0.45 = 6331.5 SQ FT 6,331.5 SQ FT - 4,817 SQ FT = CAN ADD 1,514.5 SQ FT 2. FAR: 4212 GSF EXISTING (3572 MAIN HOUSE + 640 GARAGE) -> 4,212/14,070 = 0.299 FAR FAR LIMIT: 0.4 -> 0.4-0.299= 0.11 REMAINING 14,070 X 0.11 = 1547.7 SQ FT 1547.7 SQ FT + 640 SQ FT = CAN ADD 2187 SQ FT " 4 / 3 2 - ' 7 D02 1 A200 " 2 - ' 4 1 2 HR FIRE RATED EXTERIOR WALL NEW COUNTER W/ STORAGE BELOW 2 A201 D01 GARAGE W01 2 A202 UP (E) GARAGE FOOTPRINT (E) POOL TO REMAIN 1 A201 1 3 ' - 8 3 / 4 " 2 A200 3 A300 3 A201 4 A201 D05 GYM W03 1 A300 D03 D06 GARDEN ROOM W02 STORAGE D04 3 A200 2 A300 (E) ELECTRICAL RACK UTILITY EASEMENT HVAC CONDENSER UNITS (E) UTILITY POLE 1 BACKYARD BUILDING - LEVEL 1 Scale: 1/4" = 1'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title ANNOTATION PLAN - LEVEL 01 A101 FLOOR PLAN GENERAL NOTES: 1. 2. 3. 4. PERFORM ALL WORK IN ACCORDANCE WITH CITY OF _____ CODES AND ORDINANCES. DO NOT SCALE DRAWINGS. CONTACT ARCHITECT UPON DISCOVERY OF MISSING INFORMATION OR CONFLICTS IN DRAWINGS. CONTACT ARCHITECT WITH ANY FRAMING QUESTIONS OR DISCREPANCIES. VERIFY ALL DIMENSIONS PRIOR TO CONSTRUCTION. NOTIFY THE ARCHITECT OF ANY DISCREPANCIES. ANY WORK THAT INVOLVES DAMAGE TO EXISTING CONDITIONS SHOULD BE REPAIRED TO MATCH EXISTING. 9' - 1" " 4 / 3 2 - ' 7 5 1/2" 5 1/2" 3' - 0" 19' - 1 1/4" 5 1/2" " 4 1 1/ 3' - 1 2 " 8' - 2 1 " 2' - 6 2' - 0 3/ " 4 " /4 2' - 8 3 2 " 1' - 3 " 2 5 1/ GARAGE 5 1/2" 7' - 7 3/4" 5 1/2" 8" 11' - 0" 9' - 8" 5 1/2" 4 1 / 2 " 2 ' - 6 " GYM GARDEN ROOM " 2 5 1/ 5 1 / 2 " 2 ' - 3 1 / 4 " 1 0 ' - 0 1 / 4 " 1 4 ' - 8 1 / 4 " 1 9 ' - 2 1 / 2 " 3 1 / 2 " 2 ' - 4 1 / 2 " STORAGE 5 1/2" 7' - 7 3/4" 5 1/2" 5 1/2" 11' - 0" " /2 4' - 2 1 1 (E) ELECTRICAL RACK UTILITY EASEMENT HVAC CONDENSER UNITS (E) UTILITY POLE 1 BACKYARD BUILDING DIMENSION PLAN - LEVEL 1 Scale: 1/4" = 1'-0" " 2 - ' 4 1 " 2 5 1/ (E) POOL TO REMAIN HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title DIMENSION PLAN - LEVEL 01 A101D FLOOR PLAN GENERAL NOTES: 1. 2. 3. 4. PERFORM ALL WORK IN ACCORDANCE WITH CITY OF AUSTIN CODES AND ORDINANCES. DO NOT SCALE DRAWINGS. CONTACT ARCHITECT UPON DISCOVERY OF MISSING INFORMATION OR CONFLICTS IN DRAWINGS. CONTACT ARCHITECT WITH ANY FRAMING QUESTIONS OR DISCREPANCIES. VERIFY ALL DIMENSIONS PRIOR TO CONSTRUCTION. NOTIFY THE ARCHITECT OF ANY DISCREPANCIES. ANY WORK THAT INVOLVES DAMAGE TO EXISTING CONDITIONS SHOULD BE REPAIRED TO MATCH EXISTING. UTILITY EASEMENT (E) UTILITY POLE 1 BACKYARD BUILDING - LEVEL 2 Scale: 1/4" = 1'-0" W04 OFFICE D09 BATH W05 D07 DN STRUCTURAL POST, SIZE TBD OCULUS ABOVE STRUCTURAL POST, SIZE TBD OUTDOOR DECK W07 STORAGE 3 A300 D08 BEV. FRIDGE W06 1 A300 2 A300 HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title ANNOTATION PLAN - LEVEL 02 A102 FLOOR PLAN GENERAL NOTES: 1. 2. 3. 4. PERFORM ALL WORK IN ACCORDANCE WITH CITY OF _____ CODES AND ORDINANCES. DO NOT SCALE DRAWINGS. CONTACT ARCHITECT UPON DISCOVERY OF MISSING INFORMATION OR CONFLICTS IN DRAWINGS. CONTACT ARCHITECT WITH ANY FRAMING QUESTIONS OR DISCREPANCIES. VERIFY ALL DIMENSIONS PRIOR TO CONSTRUCTION. NOTIFY THE ARCHITECT OF ANY DISCREPANCIES. ANY WORK THAT INVOLVES DAMAGE TO EXISTING CONDITIONS SHOULD BE REPAIRED TO MATCH EXISTING. 5 1/2" " 2 5 1/ 19' - 1 1/4" 5 1/2" " 4 3' - 5 1/ " 2 5 1/ OFFICE " /4 2' - 8 3 2 " 4 0 3/ 6' - 1 1 " 2 5 1/ " 2 5' - 4 1/ " 2 5 1/ BATH " 3' - 0 5 1/2" 2' - 1 1/4" 3' - 6 3/4" 5 1/2" 8' - 8 1/4" 5 1 / 2 " 1 4 ' - 3 1 / 2 " STORAGE " 0' - 0 1 " 2 5 1/ " 4' - 4 " 4 5' - 7 1/ " 2 3 1/ 3 ' - 1 1 " 3 1/2" 4' - 6 1/2" 3 1 / 2 " 1 2 ' - 6 1 / 4 " 4 1 / 4 " 5 1 / 2 " 2 ' - 2 1 / 2 " 2 ' - 2 1 / 4 " 5 1 / 2 " BEV. FRIDGE 5 1/2" UTILITY EASEMENT (E) UTILITY POLE 5 1/2" 9' - 11 1/2" 5 1/2" 8' - 8 1/4" 1 BACKYARD BUILDING DIMENSION PLAN - LEVEL 2 Scale: 1/4" = 1'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title DIMENSION PLAN - LEVEL 02 A102D ROOF PLAN NOTES: 1. 2. 3. VERIFY ALL DIMENSIONS PRIOR TO CONSTRUCTION. NOTIFY THE ARCHITECT OF ANY DISCREPANCIES. VENT ALL MECHANICAL AND PLUMBING FIXTURES AS REQUIRED. FLASHING, UNDERLAYMENT AND FASTENING DETAILS PER ROOF MANUFACTURER INSTALLATION. VERIFY WITH ARCHITECT. 20' - 11 3/4" WALL BELOW " 4 " /4 1' - 9 3 3 " 0 " / 1'- 2 1/ 2 " /4 6' - 2 1 2 (E) PROTECTED TREE W/ LIMB EXTENDING THROUGH NEW ROOF OCULUS. VERIFY LOCATION IN FIELD OCULUS OPEN TO SKY 2 2 ' - 2 1 / 2 " MTL-01 MTL-01 2 1 / 2 " / 1 ' - 0 " 20' - 11 3/4" 2 3 ' - 3 " 1 BACKYARD BUILDING - ROOF PLAN Scale: 1/4" = 1'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title ROOF PLAN A103 HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue FINISH LEGEND MARK DESCRIPTION <varies> CAST-IN-PLACE CONCRETE CO-01 GTR-01 METAL GUTTER AND MTL-01 GYP-01 DOWNSPOUT SYSTEM GYPSUM BOARD; GYP-1 LEVEL 5, PAINTED STANDING SEAM METAL ROOFING PLYWOOD, SHEATHING GRADE HARDIE VERTICAL EXTERIOR SIDING WD-01 WOOD DECKING SI-01 PLY-01 SI-01 W06 W03 3 BACKYARD BUILDING - SOUTH Scale: 1/4" = 1'-0" BACKYARD BUILDING - ROOF PEAK 628' - 9" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" D04 BACKYARD BUILDING - LEVEL 2 614' - 3" MAIN HOUSE - LEVEL 1 604' - 10" BACKYARD BUILDING - LEVEL 1 604' - 3" BACKYARD BUILDING - ROOF PEAK 628' - 9" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" W04 BEND LINE 2 1/2" / 1'-0" 2 1/2" / 1'-0" W05 BACKYARD BUILDING - ROOF PEAK 628' - 9" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" SI-01 W02 SI-01 W01 BACKYARD BUILDING - LEVEL 2 614' - 3" BACKYARD BUILDING - LEVEL 2 614' - 3" SI-01 BACKYARD BUILDING - LEVEL 1 604' - 3" D02 MAIN HOUSE - LEVEL 1 604' - 10" BACKYARD BUILDING - LEVEL 1 604' - 3" 2 BACKYARD BUILDING - EAST Scale: 1/4" = 1'-0" 1 BACKYARD BUILDING - NORTH Scale: 1/4" = 1'-0" Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title EXTERIOR ELEVATIONS A200 BACKYARD BUILDING - ROOF PEAK 628' - 9" BACKYARD BUILDING - ROOF PEAK 628' - 9" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" SI-01 SI-01 D07 HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue BACKYARD BUILDING - LEVEL 2 614' - 3" BACKYARD BUILDING - LEVEL 2 614' - 3" FINISH LEGEND MARK DESCRIPTION <varies> CAST-IN-PLACE CONCRETE CO-01 GTR-01 METAL GUTTER AND D03 D05 BACKYARD BUILDING - LEVEL 1 604' - 3" BACKYARD BUILDING - LEVEL 1 604' - 3" 4 BACKYARD BUILDING - ATRIA NORTH Scale: 1/4" = 1'-0" 3 BACKYARD BUILDING - ATRIA SOUTH Scale: 1/4" = 1'-0" BEND LINE BEND LINE MTL-01 GYP-01 DOWNSPOUT SYSTEM GYPSUM BOARD; GYP-1 LEVEL 5, PAINTED STANDING SEAM METAL ROOFING PLYWOOD, SHEATHING GRADE HARDIE VERTICAL EXTERIOR SIDING WD-01 WOOD DECKING SI-01 PLY-01 SI-01 D01 D05 W07 SI-01 2 BACKYARD BUILDING - NORTHWEST Scale: 1/4" = 1'-0" 1 BACKYARD BUILDING - SOUTHWEST Scale: 1/4" = 1'-0" BACKYARD BUILDING - ROOF PEAK 628' - 9" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" BACKYARD BUILDING - LEVEL 2 614' - 3" Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 BACKYARD BUILDING - LEVEL 1 604' - 3" Issue Date 04/10/2026 Sheet Title EXTERIOR ELEVATIONS A201 OFFICE GARAGE 2 MAIN HOUSE SOUTH ELEVATION W/ BACKYARD BUILDING Scale: 1/4" = 1'-0" 1 MAIN HOUSE NORTH ELEVATION Scale: 1/4" = 1'-0" HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title EXTERIOR ELEVATIONS - EXISTING HOUSE A202 MAIN HOUSE ROOF RIDGE 629' - 7 3/4" BACKYARD BUILDING - ROOF PEAK 628' - 9" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" LEVEL 2 CEILING 622' - 10" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" ADU - ATTIC HEAD 620' - 3" MAIN HOUSE LEVEL 2 614' - 10" BACKYARD BUILDING - LEVEL 2 614' - 3" MAIN HOUSE - LEVEL 1 604' - 10" BACKYARD BUILDING - LEVEL 1 604' - 3" MAIN HOUSE ROOF RIDGE 629' - 7 3/4" BACKYARD BUILDING - ROOF PEAK 628' - 9" NEW BACKYARD BUILDING ROOF (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" LEVEL 2 CEILING 622' - 10" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" MAIN HOUSE LEVEL 2 614' - 10" BACKYARD BUILDING - LEVEL 2 614' - 3" MAIN HOUSE - LEVEL 1 604' - 10" BACKYARD BUILDING - LEVEL 1 604' - 3" BEND LINE BACKYARD BUILDING - ROOF PEAK 628' - 9" OUTDOOR DECK STORAGE (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" BACKYARD BUILDING - LEVEL 2 614' - 3" OFFICE OUTDOOR DECK COVERED OPEN ATRIA BACKYARD BUILDING - LEVEL 2 614' - 3" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" GARDEN ROOM GYM GARAGE GARDEN ROOM STORAGE BACKYARD BUILDING - LEVEL 1 604' - 3" BACKYARD BUILDING - LEVEL 1 604' - 3" 3 BACKYARD BUILDING SECTION - SOUTH Scale: 1/4" = 1'-0" 2 BACKYARD BUILDING SECTION - EAST Scale: 1/4" = 1'-0" BEND LINE STORAGE BATH OFFICE " 6 - ' 4 2 COVERED OPEN ATRIA GYM GARAGE 1 BACKYARD BUILDING SECTION - WEST Scale: 1/4" = 1'-0" BACKYARD BUILDING - ROOF PEAK 628' - 9" (E) HOUSE T.O. PLATE (EST.) 623' - 2 5/8" BACKYARD BUILDING - LVL 2 T.O. PLATE 621' - 3" BACKYARD BUILDING - LEVEL 2 614' - 3" MAIN HOUSE - LEVEL 1 604' - 10" BACKYARD BUILDING - LEVEL 1 604' - 3" " 0 - ' 7 " 0 - ' 9 HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title BUILDING SECTIONS A300 VIEW FROM STREET EXISTING HOUSE - WEST ELEVATION NO MODIFICATIONS PROPOSED 1939 SANBORN MAP, UPDATED 1961 EXISTING HOUSE - FRONT ELEVATION NO MODIFICATIONS PROPOSED EXISTING HOUSE - REAR ELEVATION NO MODIFICATIONS PROPOSED (E) ACCESSORY BUILDING PERMIT RECORD COURTESY OF AUSTIN HISTORY CENTER EXISTING DETACHED GARAGE - EAST ELEVATION DEMO GARAGE, TREE TO REMAIN EXISTING DETACHED GARAGE AND MAIN HOUSE REAR ELVATION EXCERPT FROM CATTERALL-THORNBERRY HOUSE HISTORIC LANDMARK NARRATIVE HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title EXISTING LANDMARK INFORMATION A700 SIERRA PACIFIC WINDOWS MATERIAL RENDER PATINA GREEN OR HEMLOCK GREEN HARDIE ARTISAN SIDING PTD. SW MUDDLED BASIL MATERIAL RENDER DESIGN INTENT REFERENCE MATERIAL RENDER HLC REVIEW 04/10/2026 ©Pollen Architecture & Design The drawings and specifications and the ideas, designs and arrangements represented thereby are and shall remain the property of the copyright holder. They are for the sole use of the project owner and his representatives and contractors on the documented project. No part thereof shall be copied, disclosed to others or used in connection with any other work or project or by any other person for any purpose. Visual contact with these drawings or specifications shall constitute conclusive evidence of acceptance of these restrictions. 1/2" 1" Issued Sets & Revisions No. Date Issue Project Number 2510 Project Title MCCONNICO BACKYARD BUILDING Project Location 1403 HARDOUIN AVE, AUSTIN, TX 78703 Issue Date 04/10/2026 Sheet Title MATERIAL PALETTE A701