Free Planning Tool

Garage ADU Cost Estimator

Answer a few questions about your garage and goals. Get an instant detailed cost breakdown — plus ROI projections tailored to your Bay Area city.

Your Garage

Your Vision & Goals

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Your ADU Cost Estimate

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ROI Projection

Disclaimer: This estimate is for planning purposes only. Actual costs vary based on site conditions, contractor bids, design decisions, and city requirements. All figures are estimates based on Bay Area averages as of 2025–2026.

Want Us to Review This Estimate for Your Specific Property?

Most ADU projects have 2–3 site-specific factors that shift costs by 15–30%. Every city also has its own requirements — what applies in San Jose may not apply in your city.

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