Additions and square-footage expansions permitted in Chicago. These are the largest residential projects a homeowner undertakes and carry the highest declared values.
25 permits listed
$15,463,032 declared value
Chicago Data Portal source
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Recent permits
4801 W PETERSON AVE$1,500,000
SPR / 2019 CBRC: GROUND LEVEL ADDITION TO EXISTING 6-STORY OFFICE BUILDING WITH RELATED ALTERATIONS TO EXISTING BUILDING, PARKING & LANDSCAPE IMPROVEMENTS, AS PER PLANS. (OCCUPANCY GROUP: B, M / TYPE II-A CONSTRUCTI
Issued 2026-09-14 · addition alteration · issued
151 N FRANKLIN ST$1,045,725
SELF CERT 2019 CBRC: REVISION TO PERMIT #101083912 FOR ELECTRICAL (POWER AND LIGHT FIXTURE REPLACEMENT AND ADDITIONS) AND PLUMBING DEMO. ALL WORK AS PER PLANS. 1A CONSTRUCTION, B-BUSINESS USE.
Issued 2026-10-14 · addition alteration · issued
1438 W 63RD ST$1,000,000
SC 2019 CBRC MODIFICATION TO EXISTING LOBBY COUNTER AND ADDITION OF BULLET RESISTANT GLASS, SAFETY FILM, NEW DOORS, CARD READERS, AND CAMERAS AT POLICE STATION. THESE SECURITY ENHANCEMENTS ARE INTEGRATED THROUGHOUT THE B
Issued 2026-10-22 · addition alteration · issued
6347 N BROADWAY$1,000,000
DDS 2019 CBC: 50,000 GSF 6-FLOOR CONCRETE BUILDING. REVISIONS TO PERMITS 101067094, 101073143, AND 101075493. INTERIOR ARCHITECTURAL, MEP, AV/IT, AND FIRE PROTECTION WORK ON L1, L2, L3, L5, AND L6. ADDITIONAL STRUCTUR
Issued 2026-10-13 · addition alteration · issued
10000 W OHARE ST$1,000,000
2019 CBRC - SPR - RENOVATIONS TO UPGRADE EXISTING HEATING, VENTILATION, FIRE ALARM AND CONTROL SYSTEMS OF THE EXISTING UNDERGROUND UTILITY RINGTUNNEL. ADDITION OF NEW GAS DETECTION SYSTEM, NEW FIRE SEPARATION WALLS AND N
Issued 2026-10-01 · addition alteration · issued
3440 N JANSSEN AVE$950,000
SELF-CERT 2019 CBC: NEW WOOD FRAME (V-A) ADDITION TO AN EXISTING MASONRY (III-A) SINGLE-FAMILY RESIDENCE WITH A BASEMENT, AS PER PLANS. RT-3.5 ZONING / SELF-CERT PERMIT PROCESS
Issued 2026-10-28 · addition alteration · issued
1922 N HUMBOLDT BLVD$880,000
SPR 2019 CBRC - CONVERT EXISTING 3 D.U. TO 6 D.U. (4 D.U.'S AS OF RIGHT, 5TH UNIT IS ADU ADD ON & 6TH UNIT IS ADA GROUND FLOOR ADD ON), NEW 3 STORY REAR FRAME ADDITION, INTERIOR ALTERATIONS INCLUDING MEP WORK TO EXI
Issued 2026-10-09 · addition alteration · issued
4117 N PAULINA ST$700,000
SC 2019 CBC: INTERIOR RENOVATION OF 3 DU IN EXISTING RESIDENTIAL INCLUDING NEW WINDOWS, TUCKPOINTING, AND MEP. R-5; CONSTRUCTION TYPE IIIA. NO CHANGE TO USE, NO ADDITIONAL DU
Issued 2026-09-10 · addition alteration · issued
5449 N WAYNE AVE$600,000
SELF CERT - 2019 CBC: RENOVATION OF EXISTING (2-STORY) MASONRY 2-FLAT RESIDENCE WITH NEW FRAMEDADDITION TO THE REAR. DUPLEX EXISTING DWELLING UNIT 1 DOWN INTO UNFINISHED BASEMENT. NEW UNDERPINNING OF UNFINISHED BASEMENT.
Issued 2026-10-05 · addition alteration · issued
4921 S PRAIRIE AVE$500,000
SPR 2019 CBRC - COMPLETE RENOVATION AND CONVERSION OF EXISTING 3-STORY MASONRY CHURCH BUILDING TO (6) RESIDENTIAL UNITS, 3A CONSTRUCTION; (2) STAIR ADDITIONS, NEW CONCRETE PAD FOR (6) PARKING SPACES, TRASH ENCLOSURE, PER
Issued 2026-10-15 · addition alteration · issued
7741 W COLUMBIA AVE$500,000
SPR 2019 CBRC 2ND FLOOR ADDITION AND RENOVATION TO EXISTING 1 STORY MASONRY SINGLE FAMILY RESIDENCE WITH BASEMENT AS PER PLANS.(OCCUPANCY R5 CLASSIFICATION ) ( TYPE VB CONSTRUCTION)
Issued 2026-10-08 · addition alteration · issued
352 W WISCONSIN ST$500,000
PROPOSED REAR BREEZEWAY CONNECTING GARAGE TO THE PRINCIPLE BUILDING, EAST SIDE GARAGE ADDITION, EXTERNAL ALTERATIONS, AND INTERIOR RENOVATIONS TO CONVERT EXISTING 3 STORY/2 UNIT RESIDENCE TO SFR, PER PLANS. VARIATION #51
Issued 2026-10-07 · addition alteration · issued
7154 N FRANCISCO AVE$500,000
SPR 2019 CBRC: ALTERATION AND CHANGE OF OCCUPANCY FROM MEDICAL SERVICES TO RELIGIOUS ASSEMBLY FOR EXISTING 1 STORY COMMERCIAL BUILDING. SCOPE INCLUDES INTERIOR ALTERATIONS AND 1 STORY ADDITION. 9 EXISTING PARKING SPAC
Issued 2026-09-24 · addition alteration · issued
2850 N RIDGEWAY AVE$475,000
SELF CERT 2019 CBRC - INTERIOR RENOVATION OF EXISTING 2 DWELLING UNIT BUILDING. SELECTIVE DEMOLITION OF INTERIOR WALLS, FLOORS, ANDEXTERIOR WALLS. NEW CONFIGURATION OF LIVING SPACES. ADDITION OF REAR DECK. NEW WORK INCL
Issued 2026-09-21 · addition alteration · issued
454 N COLUMBUS DR$467,307
SELF-CERT 2019 CBRC - REVISION TO LAYOUT OF WOMEN'S AND MEN'S RESTROOMS ON 36TH FLOOR INCLUDING ADDITIONAL INTERIOR PARTITIONS, RELOCATION OF PLUMBING FIXTURES, AND MODIFICATION OF ASSOCIATED ELECTRICAL AND MECHANICAL SC
Issued 2026-10-13 · addition alteration · issued
7200 N OSCEOLA AVE$450,000
SPR 2019 CBRC: INTERIOR AND EXTERIOR ALTERATIONS TO MAIN LEVEL ENTRANCE VESTIBULE, CHAPEL ENTRANCE, AND EXTERIOR RAMP ADDITIONS TO MAIN ENTRANCE AND CHAPEL. 2-STORY PARISH CENTER. (OCCUPANCY GROUP B, TYPE IIIB CONSTRUCTI
Issued 2026-10-30 · addition alteration · issued
1714 W BEACH AVE$450,000
PROPOSED 3RD STORY ADDITION, 3 STORY REAR ADDITION, REAR DECK, AND ATTACHED 2 CAR GARAGE W/ROOF DECK FOR EXISTING 2 STORY SFR, PER PLANS. VARIATIONS #39/40-26-Z TO RELOCATE THE REAR YARD OPEN SPACE AND REDUCE THE REQUIRE
Issued 2026-09-21 · addition alteration · issued
918 W EASTWOOD AVE$400,000
SPR -2019 CBRC- INTERIOR REHABILITATION OF EXISTING MULTI FAMILY BUILDING WITH BASEMENT, NEW REAR 3 STORY OPEN WOOD PORCH. ADD TWO DWELLING UNITS IN BASEMENT, EXISTING 6 DU, PROPOSED 8 DU. (TYPE 3B CONSTRUCTION, R-2 OCCU
Issued 2026-10-30 · addition alteration · issued
2621 W CULLERTON ST$400,000
SPR 2019 CBRC: REMODEL 1ST AND 2ND FLOORS, REMOVE ATTIC FLOOR AND ROOF AND CONSTRUCT NEW 3RD FLOOR PER PLANS. ADD NEW DECK AT 2ND FLOOR REAR WITH STAIR TO GROUND PER PLANS. REMOVE SECTION OF WOOD FRONT PORCH THAT WASN'
Issued 2026-10-19 · addition alteration · issued
5871 N OVERHILL AVE$400,000
SC 2019 CBRC. CONSTRUCT A SECOND STORY ADDITION AND AN ATTACHED GARAGE FOR THE EXISTING 1 STORY SINGLE FAMILY RESIDENCE WITH A BASEMENT. WORK INCLUDES A NEW REAR DECK AND INTERIOR ALTERATIONS TO THE BASEMENT AND FIRST FL
Issued 2026-10-15 · addition alteration · issued
3651 N GREENVIEW AVE$400,000
RENOVATION (NO ADDITION) OF THE EXISTING SUBJECT BUILDING IN ORDER TO MODERNIZE AND DE-CONVERT FROM 2 DWELLING UNITS TO A SINGLE-FAMILY RESIDENCE. CONSTRUCT NEW GARAGE WITH ROOF DECK PER PLANS. R-5 OCCUPANCY. TYPE-IIIB C
Issued 2026-10-06 · addition alteration · issued
3423 N DRAKE AVE$375,000
SELF-CERT 2019 CBRC: INTERIOR ALTERATIONS WITHIN EXISTING 2-STORY MIXED USE BUILDING TO EXPAND EXISTING 1ST FLOOR OFFICE SPACE. WORK INCLUDES NEW PARTITIONS, DOORS, CEILINGS, LIGHTING, MILLWORK, AND FINISHES WITH ASSOCIA
Issued 2026-09-18 · addition alteration · issued
9334 S PLEASANT AVE$350,000
SC 2019 CBRC: INTERIOR RENOVATIONS AND ADDITION OF REAR TWO STORY STRUCTURE TO AN EXISTING TWO AND A HALF STORY PLUS BASEMENT SINGLE FAMILY HOME. CONSTRUCTION OF NEW GARAGE AT REAR OF PROPERTY. OCCUPANCY GROUP R-5; CONST
Issued 2026-10-15 · addition alteration · issued
6953 N OSCEOLA AVE$320,000
SC 2019 CBRC CONSTRUCT A SECOND STORY ADDITION AND INTERIOR ALTERATIONS FOR THE ONE STORY SINGLE FAMILY RESIDENCE WITH A BASEMENT AND A REAR ONE-STORY ADDITION WITH A BASEMENT AND A NEW REAR DECK AND STAIR, AS PER PLANS.
Issued 2026-09-10 · addition alteration · issued
5548 N WAYNE AVE$300,000
SELF-CERT 2019 CHICAGO BUILDING CODE NEW CONSTRUCTION GARAGE WITH SECOND FLOOR ADDITIONAL DWELLING UNIT - TYPE IIIA CONSTRUCTION - AS PER PLANS.
Issued 2026-10-29 · new construction · issued
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