Detached Garage Construction Cost in San Francisco, CA
Based on 183 detached garage construction building permits filed in San Francisco between 2015 and 2026, the typical declared project value is $25,000, with most landing between $14,500 and $60,000. These are real records from San Francisco's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Detached Garage Construction values over time in San Francisco
Median declared value moved from $20,000 in 2018 to $37,500 in 2026, up 88% over that span. Each year below is computed from the filings that actually cleared in San Francisco.
Recent detached garage construction permits in San Francisco
Actual filings from San Francisco's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-06-02 | $12,000 | rear cottage (detached garage): in kind overhead door replacement, voluntary strengthening |
| 2026-05-11 | $10,000 | widen vehicle door of detached garage. remove interior non-bearing partian walls. |
| 2026-04-29 | $92,875 | to comply w/ nov# 202544786, new adu (337-a) per ca government code section 65852.2. conve |
| 2026-04-24 | $75,000 | conversion of an (e) detached garage into accessory recreational space serving the primary |
| 2026-04-24 | $9,000 | exterior update to include paint, new garage door, repair and resurface stucco, cladding a |
| 2026-04-17 | $30,000 | reframe garage door, install new garage door, new rooftop for garage, new drains and pipes |
| 2026-04-14 | $105,000 | south detached structure (1112a shotwell st.): 1-bedroom accessory dwelling unit in rear d |
| 2026-03-24 | $60,000 | remove (e) slab at detached garage and replace in kind. |
| 2026-02-26 | $40,000 | to erect 1 story, no basement, type v-b of a new detached garage. |
| 2026-02-05 | $35,000 | new drywall, new sliding door at storage, new storage windows, new lighting and electrical |
| 2026-02-05 | $35,000 | new drywall, new sliding door at storage, new storage windows, new lighting and electrical |
| 2026-01-27 | $44,000 | remove & reconstruct (e) wood dramed entry staircase, structure & guards. installation of |
| 2025-10-21 | $67,000 | in kind stair replacement. existing non compliant exterior entry stair system bring up to |
| 2025-09-17 | $10,000 | garage opening enlargement -remove 8' garage & demo 2.5' wide strip exterior wall to widen |
| 2025-08-08 | $18,000 | replace front exterior stair for proper rise and run. no changes to main building facade o |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What detached garage construction actually costs in San Francisco comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from San Francisco's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a San Francisco homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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