Basement Finishing Cost in Chicago (2026)
Average cost in Chicago
US$25,000 — US$150,000
US$55 — US$140 per sq ft
Cost Breakdown
ItemizedSkilled trades and general contracting
40%
Drywall, flooring, framing, and finishes
30%
Drain tiles, sump pumps, and vapor barriers
12%
Rough-in and fixtures for bathrooms/bars
13%
City fees and architectural plans
5%
Sales Tax at 6.25%
📋What's Included
ScopeTypically Includes
- Framing & drywall
- Basic flooring (LVP or carpet)
- Electrical (outlets & lighting)
- Egress window (if required)
- Painting
- Basic bathroom rough-in
Typically Excludes
- Full basement bathroom
- Built-in bar or kitchen
- Home theater wiring
- Waterproofing (separate cost)
- Permits & inspections
Assumes an unfinished basement with existing concrete floor and basic utilities.
🧮Estimate Your Cost
InteractiveEstimated Cost
US$28,860 — US$43,290
Based on 9 sources and market data for Chicago. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$56,895
Today
US$60,081
Basement Finishing in Chicago is ↑ 5.6% compared to roughly a year ago — about US$3,186 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Basement Finish Contractors in Chicago
Verified providersAssembly Squad Remodeling Chicago
205 N Michigan Ave Suit 810, Chicago, IL 60601, USA
83 reviews
NextForm Basement Remodeling & Bathroom
3221 S Halsted St, Chicago, IL 60608, USA
42 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
Chicago building code requires a minimum ceiling height of 7'0" for habitable rooms. Many Chicago bungalows have 6'6" to 7'0" unfinished heights, which may require underpinning ($15,000–$35,000) to meet code after flooring and drywall are added.
While not strictly mandatory for all finishes, local contractors consider it essential due to Chicago's clay soil and high water table. Interior drain tile systems and sump pumps typically cost between $3,000 and $10,000 to prevent mold and structural damage.
Chicago uses a hybrid fee structure that often results in a flat $602 building permit fee for standard residential remodeling. When adding trade permits for electrical ($75) and plumbing, a full basement project with a bathroom typically totals approximately $902 in city fees.
Yes, under the expanded 2026 ADU ordinance, basement apartments are permitted. These legal conversions are more costly ($85,000–$165,000) due to requirements for separate entrances and fire-rated separations, but they can generate $2,800–$4,500 in monthly rental income.
📊Our Methodology
How we collect dataAggregated from 9+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 2 weeks ago. Updates run weekly. All costs in USD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.