Garage Construction & ADUs Cost Guide — Naperville, IL

Verified 2025 pricing for garage construction & adus services in Naperville. Updated quarterly from local contractor data.

Service Cost Ranges

Service	Low	Average	High	Unit
Detached Garage Construction	$26,000	$58,500	$130,000	per project
ADU / Garage Apartment	$78,000	$156,000	$325,000	per project
Carport Installation	$5,200	$11,700	$32,500	installed

📌

High provider competition keeps pricing competitive vs national averages

✓Get at least 3 quotes

✓Ask about seasonal discounts

✓Bundle multiple services

✓Check for manufacturer rebates

✓Verify license before hiring

See who offers the best value for money in Naperville.