Cost to Detached Garage Construction in San Francisco, CA (2026)
If you’re budgeting a detached garage construction in San Francisco, most projects run $26,268-$78,803, 31% above the $35,000 national average. What moves that number most is usually one thing: Size and Number of Bays. On its own it can swing the cost by $10,000 - $40,000, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Get engineering plans done once and use competitive bidding to get the best framing price. Having your own plans lets you get apples-to-apples bids from multiple framing contractors.
$26,268-$78,803 in San Francisco
31% above the national average · 1.31x cost multiplier
Expect to pay $26,268-$78,803 for a detached garage construction in San Francisco, about 31% above the national benchmark. The West Coast region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at San Francisco prices.
Cost Breakdown in San Francisco
| Line Item | Low | Mid | High |
|---|---|---|---|
| Cost per sq ft | $46 | $79 | $158 |
| Materials | $12,750 | $22,950 | $44,625 |
| Labor | $13,658 | $21,852 | $38,242 |
| Permits | $1,530 | $2,295 | $3,188 |
| Design | $638 | $1,530 | $4,463 |
| Total | $28,576+32% vs. national avg | $48,627+31% vs. national avg | $90,518+31% vs. national avg |
Budget
Basic 20x20 (400 sq ft) single-car detached garage - wood frame, T1-11 siding, asphalt shingles, concrete slab, one standard garage door, minimal electrical
Mid-Range
24x24 (576 sq ft) two-car detached garage - wood frame, LP SmartSide siding, architectural shingles, concrete slab, two garage doors, full electrical with subpanel, windows
Premium
24x36 (864 sq ft) carriage-style two-car garage with bonus room above - engineered lumber, shingle siding, metal roof, concrete slab with radiant heat, custom carriage doors, full electrical, plumbing rough-in
Material Options
Material prices below are national averages; availability in San Francisco may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| Wood Frame with T1-11 Siding | $35 - $55 per sq ft | Budget builds where cost is the primary concern and the garage is utilitarianLowest cost, widely available, easy to modify or repair |
| Wood Frame with LP SmartSide | $45 - $70 per sq ft | Mid-range builds that need to look good and last - the most popular choiceMore durable than T1-11, pre-primed, lower maintenance, better curb appeal |
| Concrete Block (CMU) or ICF | $55 - $90 per sq ft | Tropical climates (hurricane resistance), homes where fire separation is a concern, or workshop spacesExtremely durable, fire-resistant, pest-resistant, great sound deadening, higher perceived value |
| Steel Building Kit (Pre-Engineered Metal) | $25 - $50 per sq ft for shell | Rural properties, farms, or large workshop spaces where looks are secondary to functionLower cost for large structures, fast construction, very durable, low maintenance, clear-span interior |
| Carriage House / Custom Wood Siding | $70 - $120 per sq ft | Premium properties where the garage is a visible architectural feature of the homeHigh-end aesthetic, adds significant property value, highly customizable, can match any architectural style |
Other Projects in San Francisco
San Francisco Estimate
Typical Range
$26,268-$78,803
vs. National Average
31% above national
Cost Multiplier
1.31x
Cost Per sq ft
$46-$158
This 1.31x estimate prices San Francisco labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →