Garage Construction & ADUs Cost Guide — Montgomery, AL

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

Service Cost Ranges

Service	Low	Average	High	Unit
Detached Garage Construction	$17,000	$38,250	$85,000	per project
ADU / Garage Apartment	$51,000	$102,000	$212,500	per project
Carport Installation	$3,400	$7,650	$21,250	installed

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Older housing stock (pre-1972) increases complexity and materials cost

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High humidity increases wear on systems; maintenance needs are higher

✓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 Montgomery.