Detached Garage Projects See $15K Average in Chicago
Wood-frame garage construction costs stabilizing around $15,000 as spring building season kicks off.
Chicago homeowners are building new detached garages at an average cost of $15,000, based on recent permit filings across the city.
A typical project — like the recent 22' x 20' wood-frame garage on Sangamon Street — includes hip roof construction, standard electrical service, and dimensions that fit most Chicago lots without variance requests.
What drives the $15K price point:
- Standard 20' x 22' footprint fits most lots
- Wood frame construction (not masonry)
- Basic electrical service for garage doors and lighting
- Hip roof design handles Chicago wind loads
- No plumbing or heating systems
The express permit process helps keep costs predictable. Express permits now processing in days rather than weeks means contractors can provide firm pricing without permit delay contingencies.
**Timing matters for garage projects.** Foundation work needs ground temperatures above 40°F, making April through October the optimal window. With permits clearing quickly, you can break ground while weather cooperates.
**Beyond storage:** Many homeowners view garage construction as the first step toward future ADU development. Building the structure now establishes the footprint for potential coach house conversion later.
If you're considering a detached garage, get permits filed by early summer. Even with express processing, you want foundation work completed before Chicago's unpredictable fall weather arrives.