Additions - To Existing Structure Cost in Chicago, IL in 2026
Most Additions - To Existing Structure projects in Chicago, IL cost between $59,000 and $270,000. The typical price is $125,000.
Labour and materials in Chicago run about 19% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Whether the addition needs its own foundation and roof tie-in
- Adding a bathroom or kitchen (plumbing and electrical runs)
- Structural work to the existing wall being opened up
- Local permit and inspection requirements
Usually included
- Framing, roofing and siding to match
- Electrical rough-in and finish
- Insulation, drywall and paint
- Flooring and trim
Usually extra
- Permits and architectural drawings
- Site work or tree removal
- High-end fixtures and appliances
Unit prices in Chicago, IL
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $145 |
| Mid-range | $315 |
| High-end | $675 |
Home addition and remodeling contractors in Chicago, IL
Businesses listed on Google near Chicago, IL. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Areté Renovators
4.9(165 reviews)
3821 W Montrose Ave, Chicago, IL 60618
Icon Construction & Remodeling Inc
5.0(113 reviews)
212 North Carpenter St# A1, A2, Chicago, IL 60607
Maya Construction Group
4.9(107 reviews)
4408 N Milwaukee Ave, Chicago, IL 60630
Assembly Squad Remodeling Chicago
4.9(85 reviews)
205 N Michigan Ave Suit 810, Chicago, IL 60601
METRO Construction & Remodeling
4.9(82 reviews)
2910 W North Ave, Chicago, IL 60647
ROMAN Home Remodeling
4.8(72 reviews)
3033 N Clark St, Chicago, IL 60657