3645-3647 North Wilton Avenue, Chicago
technical data · neighborhood and transit
Quick answers
- Does 3645-3647 North Wilton Avenue have open permits or code violations?
- Chicago Department of Buildings lists 14 permits, 9 not closed, and 11 violations, 7 open.
- What is the 2026 conforming loan limit in Cook County?
- $832,750 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 2, moderate potential.
- What natural disasters is 3645-3647 North Wilton Avenue at risk for?
- FEMA's National Risk Index rates the area very low overall, with elevated cold wave risk.
Permits and code violations
9 permits not closed out. Unfinished permits pass to the next owner. 7 open violations.
- Permit - new construction Jun 2026Active
Convert from 3 existing residential units into 15 residential units, erect new 4 story south addition with basement and new 4th floor addition onto the existing 3 story brick building with basement, new rear open metal stair, new 6' high fence and remove existing detached frame car garage and replace with new 1 story attached brick car garage with roof deck, as per architect's plans. the scope of work includes architecture, plumbing, hvac and electric. current use: 3 residential unitsproposed use: 15 residential unitsfully sprinklered building
- Permit - renovation/alteration May 2026Active
Spr 2019 cbrc: interior basement remodel of an existing 3-story, type iiia masonry and type va frame, 44' ht., 3-unit residential building including 2 new dwelling units in basement for conversion from 3 dwelling units to 5 dwelling units and lowering of the basement slab without underpinning (occupancy group r-2; type iiia and type va construction).**certified corrections subject to field inspections & audit **
- Permit – express permit program Feb 2026Active
Scope: nonstructural interior preparatory demolition of non-load bearing drywal and m.e.p. systems with demo drawings and all other work to be performed on permit no 101074227. locations: 3 residential unit(s), 0 non-residential unit(s), 2 interior common areas, basement, first, second third floor.
- Permit – express permit program Oct 2025Complete
Wreck and remove a frame detached garage, no replacement. locations: 0 residential unit(s), 0 non-residential unit(s), exterior work, 1 story frame garage.
- Permit - new construction Oct 2025Active
Proposed 3 car garage and 2nd floor coach house w/balcony in rear of an existing front 3 story/3 unit residence (per adu ordinance), per plans.
- Permit - renovation/alteration Sep 2025Active
Proposed rear 3 story addition w/stairs/landing, 2 story rear porches w/3rd floor addition, roof enclosure, lowering of basement, replace garage with 2 space parking pad, and internal renovations in an existing 3 story/3 unit residence, per plans.
- Permit - easy permit process Dec 2019
Rebuild parapet wall
- Permit - easy permit process Jun 2019
Garage roof repairs
- Permit - renovation/alteration Aug 2018Complete
New open wood porch as per plans
- Permit - easy permit process Apr 2018
Repair rear exterior porch railings. same as existing. no structural work. all work subject to field inspections.
- Permit – express permit program Jul 2011Complete
Residential installation of a low voltage security alarm system david mellman 326-55197
- Permit - renovation/alteration Jan 2009Complete
Revision to a permit no.100221757 and the scope is limited to clarify ceiling ht in the basement, light & vent for north basement bedroom and relocation of internal unit stair to a basement as per plans
Chicago Department of Buildings
Safety and environment
FEMA natural hazard risk
Very Low
Highest for this area: cold wave. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
11 within 1,650 ft
Nearest: Addison Apartments, Llc, 3527 North Clark Street (1,150 ft), open. 3 still open. Ask whether groundwater or soil vapor testing was done.
EPA UST Finder, leaking underground storage tank releases
Toxic release facility
3,300 ft
Craftsman Plating Tinning Corp. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
Radon potential
Moderate
Average indoor levels of 2 to 4 pCi/L. EPA still suggests testing ground-floor and basement units.
EPA and USGS Geologic Radon Potential Map
Nearest public schools
400 ft
Inter-American Elem Magnet School (400 ft), Greeley Elem School (1,750 ft), Hawthorne Elem Scholastic Academy (2,600 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Sinkhole-prone ground
Limestone karst
The bedrock here (dolostone (dolomite), Silurian) can dissolve and open sinkholes. Ask for a geotechnical report and check whether sinkhole coverage is in the insurance policy.
USGS Karst in the United States (OFR 2014-1156)
Conforming loan limit 2026
$832,750
Cook County. Mortgages up to this amount qualify for Fannie Mae and Freddie Mac pricing. Above it, the loan is a jumbo with stricter terms.
FHFA Conforming Loan Limit Values, one-unit
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Who lives and works in Chicago
Trading floors, logistics and the deepest architecture stock in America
Chicago carries a full corporate economy at a price the coasts do not match. Neighborhoods are distinct and walkable, two and three flats are everywhere, and the Loop still sets the commute for finance, law and consulting.
- $71,673
- median household income
- 18.9%
- residents aged 25 to 34
- 45%
- households that own their home
What pays the bills
- Finance and trading
- Logistics and rail
- Law and consulting
- Healthcare
- Manufacturing
Who anchors the economy
CME Group · Boeing suppliers · University of Chicago · Northwestern Medicine · United Airlines
The market is shaped around
- Young professionals
- Families buying space
- Two and three flat owners
More on North Wilton Avenue
All addressesViewing recommendations
What's worth checking in person before deciding.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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