Cost to Subfloor Repair & Replacement in San Francisco, CA

$1,550–$7,750 in San Francisco

55% above the national average · 1.55x cost multiplier

Expect to pay $1,550–$7,750 for a subfloor repair & replacement in San Francisco, about 55% 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	$5	$9	$16
Materials	$388	$1,240	$3,100
Labor	$620	$2,325	$5,425
Permits	$0	$155	$310
Total	$1,008+55% vs. national avg	$3,720+55% vs. national avg	$8,835+55% vs. national avg

Budget

Small patch repair (25-50 sq ft) of water-damaged plywood subfloor. Cut out damaged section, replace with matching plywood, secure to joists.

Mid-Range

Moderate area replacement (100-300 sq ft) of damaged subfloor with 3/4-inch CDX or tongue-and-groove plywood. Includes existing floor removal, joist inspection, and new subfloor installation.

Premium

Full room or multi-room subfloor replacement (300-600+ sq ft) including joist repair, mold remediation, new 3/4-inch AdvanTech or OSB subfloor, and glue-and-screw installation.

Material Options

Material prices below are national averages; availability in San Francisco may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
CDX Plywood (3/4-inch)	$1.00-$1.50/sq ft	Industry standard, strong, widely available, accepts all flooring types	Swells when wet, can delaminate if exposed to moisture, heavier than OSB	Standard subfloor replacement in dry areasIndustry standard, strong, widely available, accepts all flooring types
OSB (Oriented Strand Board, 23/32-inch)	$0.80-$1.25/sq ft	Cheapest option, consistent strength, large panel sizes available	Swells permanently when wet (worse than plywood), rough surface	Budget replacements in areas with no moisture riskCheapest option, consistent strength, large panel sizes available
AdvanTech/Engineered Subfloor	$2.00-$3.00/sq ft	Moisture-resistant, won't swell, stiffer than plywood, 500-day weather exposure warranty	More expensive, may not be stocked at all suppliers	Bathrooms, kitchens, laundry rooms, and any area with moisture riskMoisture-resistant, won't swell, stiffer than plywood, 500-day weather exposure warranty
Tongue-and-Groove Plywood (3/4-inch)	$1.25-$2.00/sq ft	Interlocking edges reduce squeaks, stronger joint, smoother surface	Costs more than standard CDX, harder to install in tight spaces	Open living areas where squeak prevention mattersInterlocking edges reduce squeaks, stronger joint, smoother surface

Other Projects in San Francisco

Full Kitchen Remodel

Full Bathroom Remodel

Hardwood Floor Installation

Back to national average for Subfloor Repair & Replacement

San Francisco Estimate

Typical Range

$1,550–$7,750

vs. National Average

55% above national

Cost Multiplier

1.55x

Cost Per sq ft

$5–$16

Estimates apply San Francisco's 1.55x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →