# Building permits at 3725 W Windsor Ave, Chicago, IL 3721 W Sunnyside Ave: demolition permitted May 26, a new building Aug 3. One permit here in the last two years. The newest, May 15: Interior rehab + replacement of existing enclosed & open rear wood porches. Within a quarter mile, the city has issued 17 more permits since May 1. Two are for new buildings, the nearest 40 ft away. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | May 15, 2026 | Alteration or repair | Interior rehab + replacement of existing enclosed & open rear wood porches (same size same, configuration) to existing, 2 du, 2 story + basement masonry building(occupancy group R-2, type 3a construction) | $125,000 | [101082301](https://nearbypermits.com/chicago/permit/101082301/) | ## Within ¼ mi since May 1, 2026 17 permits in the circle. From our copy of the city's data (last 24 months). ### Next door (under 250 ft), 1 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Aug 10, 2026 | [3729 W Windsor Ave](https://nearbypermits.com/chicago/address/3729-w-windsor-ave/) | 40 ft W | New building | Self-cert. 2019 Chicago building code (cbrc). Interior alteration and deconversion of an existing 2 du unit residential building to single-family residence, including associated electrical, mechanical, and plumbing (m.e.p.) systems. Construction of a new rear addition at 3729 W windsor ave as per pl | $200,000 | [101083497](https://nearbypermits.com/chicago/permit/101083497/) | ### This block (250 to 1,000 ft), 8 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 18, 2026 | [3735 W Agatite Ave](https://nearbypermits.com/chicago/address/3735-w-agatite-ave/) | 670 ft S | Electrical | Line voltage electrical work. New permanent 200 amp service disconnecting means with 1 circuits. Receptacle outlets: 1. Lighting outlets: 1. Specific location: basement and the back of the house. | $5,000 | [B200512007](https://nearbypermits.com/chicago/permit/B200512007/) | | Aug 3, 2026 | [3721 W Sunnyside Ave](https://nearbypermits.com/chicago/address/3721-w-sunnyside-ave/) | 340 ft S | New building | Spr-2019-cbrc, rs-3 zoning, type iii-a construction,r-5 occupancy. Architectural consultation for new single family building,with existing 2-story frame building and basement. New rear and front metal potches. New architectural, mechanical, electrical and plumbing as per plans. | $30,000 | [101078011](https://nearbypermits.com/chicago/permit/101078011/) | | Jul 29, 2026 | [4600 N Hamlin Ave](https://nearbypermits.com/chicago/address/4600-n-hamlin-ave/) | 560 ft NW | Electrical | Line voltage electrical work. New permanent 400 amp service disconnecting means with 1 circuits. Receptacle outlets: 1. Lighting outlets: 1. Specific location: basement utility. | $59,000 | [B200477883](https://nearbypermits.com/chicago/permit/B200477883/) | | Jul 29, 2026 | [3741 W Sunnyside Ave](https://nearbypermits.com/chicago/address/3741-w-sunnyside-ave/) | 360 ft S | Electrical | Line voltage electrical work. New permanent 400 amp service disconnecting means with 1 circuits. Receptacle outlets: 1. Lighting outlets: 1. Specific location: basement utility. | $49,000 | [B200477505](https://nearbypermits.com/chicago/permit/B200477505/) | | Jul 27, 2026 | [4638 N Hamlin Ave](https://nearbypermits.com/chicago/address/4638-n-hamlin-ave/) | 890 ft NW | Alteration or repair | Spr2019cbc: new 2 story rear frame addition and interior alteration in existing 2 estory w/ bsmnt frame residence all work includes, electrical, plumbing and HVAC system as per plans. | $40,000 | [101084125](https://nearbypermits.com/chicago/permit/101084125/) | | Jul 23, 2026 | [3711 W Sunnyside Ave](https://nearbypermits.com/chicago/address/3711-w-sunnyside-ave/) | 370 ft SE | Fence, wall or deck | Limited repair (25% or less) for wood porch (open) (quantity: 1, location: front of building). Landing: 95 square feet. Landing not more than 6 feet above ground. | $3,500 | [B200478779](https://nearbypermits.com/chicago/permit/B200478779/) | | May 28, 2026 | [3732 W Agatite Ave](https://nearbypermits.com/chicago/address/3732-w-agatite-ave/) | 590 ft S | Fence, wall or deck | New detached wood frame garage. Dimensions and setbacks per application. Building outside dimensions: 20'-5' ' x27'-0' '. Gable roof height to peak: 14'-0' '. | $15,000 | [B200470390](https://nearbypermits.com/chicago/permit/B200470390/) | | May 26, 2026 | [3721 W Sunnyside Ave](https://nearbypermits.com/chicago/address/3721-w-sunnyside-ave/) | 340 ft S | Demolition | Complex demolition: wreck and remove a 2 story frame residence and a detached frame garage | $11,000 | [B101081193](https://nearbypermits.com/chicago/permit/B101081193/) | ### Farther (1,000 ft to ¼ mi), 8 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 12, 2026 | [4706 N Hamlin Ave](https://nearbypermits.com/chicago/address/4706-n-hamlin-ave/) | 0.22 mi N | Fence, wall or deck | Full rebuild (same as existing) for wood porch (open) (quantity: 1, location: east side of building). Landing: 146 square feet. Landing not more than 6 feet above ground. | $5,000 | [B200512928](https://nearbypermits.com/chicago/permit/B200512928/) | | Sep 25, 2026 | [3835 W Montrose Ave](https://nearbypermits.com/chicago/address/3835-w-montrose-ave/) | 0.24 mi SW | Alteration or repair | Spr 2019 CBRC: complete interior and exterior renovation of existing house and finishes with some alterations to load bearing elements. All new MEP systems and distribution. Reduction of enclosed area with the removal of an unconditioned stair tower. Construction of a new detached 2 car garage. | $250,000 | [101084588](https://nearbypermits.com/chicago/permit/101084588/) | | Sep 23, 2026 | [4706 N Hamlin Ave](https://nearbypermits.com/chicago/address/4706-n-hamlin-ave/) | 0.22 mi N | Electrical | Line voltage electrical work. New permanent 200 amp service disconnecting means with 21 circuits. Receptacle outlets: 56. Lighting outlets: 34. Specific location: house, attic, and garage. | $30,992 | [B200512604](https://nearbypermits.com/chicago/permit/B200512604/) | | Sep 16, 2026 | [4424 N Springfield Ave](https://nearbypermits.com/chicago/address/4424-n-springfield-ave/) | 0.24 mi SW | Solar | Install solar panels on roof of principal building. Roof type: sloped (2:12 to 5:12). Inverter output: 11.5 kw. Array output: 6.75 kw. Location: roof mount solar installation. Icc distributed generation installer cert. #22-0441. | $15,330 | [B200509519](https://nearbypermits.com/chicago/permit/B200509519/) | | Aug 19, 2026 | [4415 N Central Park Ave](https://nearbypermits.com/chicago/address/4415-n-central-park-ave/) | 0.24 mi SE | Other | Reinstate permit no 101037008 must begin work and or request inspection no later than january 2027 on permit no 101037008 | Not listed | [101087465](https://nearbypermits.com/chicago/permit/101087465/) | | Jul 26, 2026 | [4716 N Lawndale Ave](https://nearbypermits.com/chicago/address/4716-n-lawndale-ave/) | 0.24 mi N | Alteration or repair | Tuckpointing and unit masonry repair / replacement: 4000 SQ. FT., Lintel qty. 11, MAX. Length 8. Location: masonry courtyard facade. | $24,000 | [B200476674](https://nearbypermits.com/chicago/permit/B200476674/) | | Jul 21, 2026 | [4701 N Monticello Ave](https://nearbypermits.com/chicago/address/4701-n-monticello-ave/) | 0.24 mi NE | Electrical | Line voltage electrical work. Alter existing system III emergency lighting. Receptacle outlets: 0. Lighting outlets: 0. Specific location: dwelling units & common areas. | $7,500 | [B200478270](https://nearbypermits.com/chicago/permit/B200478270/) | | Jul 13, 2026 | [4701 N Monticello Ave](https://nearbypermits.com/chicago/address/4701-n-monticello-ave/) | 0.24 mi NE | Alteration or repair | Tuckpointing and unit masonry repair / replacement: 300 SQ. FT., Lintel qty. 0, MAX. Length 0. Location: front facade. | $5,000 | [B200477572](https://nearbypermits.com/chicago/permit/B200477572/) | ## Zoning requests nearby We don't list zoning cases for Chicago yet. Look them up on the city's Zoning Board of Appeals page: https://www.chicago.gov/city/en/depts/dcd/zoning-board-of-appeals.html ## More on this street Other addresses on W Windsor Ave with permits, nearest house number first: - [3729 W Windsor Ave](https://nearbypermits.com/chicago/address/3729-w-windsor-ave/): newest permit Aug 10, 2026 - [3756 W Windsor Ave](https://nearbypermits.com/chicago/address/3756-w-windsor-ave/): newest permit Mar 17, 2026 - [2615 W Windsor Ave](https://nearbypermits.com/chicago/address/2615-w-windsor-ave/): newest permit Apr 29, 2024 - [2609 W Windsor Ave](https://nearbypermits.com/chicago/address/2609-w-windsor-ave/): newest permit Sep 15, 2026 - [5000 W Windsor Ave](https://nearbypermits.com/chicago/address/5000-w-windsor-ave/): newest permit Jan 21, 2026 - [5029 W Windsor Ave](https://nearbypermits.com/chicago/address/5029-w-windsor-ave/): newest permit Feb 18, 2025 - [5056 W Windsor Ave](https://nearbypermits.com/chicago/address/5056-w-windsor-ave/): newest permit Aug 19, 2026 - [5061 W Windsor Ave](https://nearbypermits.com/chicago/address/5061-w-windsor-ave/): newest permit Dec 6, 2024 - [5063 W Windsor Ave](https://nearbypermits.com/chicago/address/5063-w-windsor-ave/): newest permit Apr 20, 2026 - [5111 W Windsor Ave](https://nearbypermits.com/chicago/address/5111-w-windsor-ave/): newest permit Mar 16, 2026 --- Source: Chicago Department of Buildings permit data (https://data.cityofchicago.org/d/ydr8-5enu). Checked 2026-10-16 03:23 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ This site provides applications using data that has been modified for use from its original source, www.cityofchicago.org, the official website of the City of Chicago. The City of Chicago makes no claims as to the content, accuracy, timeliness, or completeness of any of the data provided at this site. The data provided at this site is subject to change at any time. It is understood that the data provided at this site is being used at one’s own risk. Map, the one permit at this address and 17 nearby: https://nearbypermits.com/chicago/address/3725-w-windsor-ave/