Cost to Subfloor Repair & Replacement in Los Angeles, CA

$1,350–$6,750 in Los Angeles

35% above the national average · 1.35x cost multiplier

In Los Angeles, a subfloor repair & replacement runs $1,350 to $6,750 on average — about 35% above what homeowners pay nationwide. The West Coast market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.

Cost Breakdown in Los Angeles

Line Item	Low	Mid	High
Cost per sq ft	$4	$8	$14
Materials	$338	$1,080	$2,700
Labor	$540	$2,025	$4,725
Permits	$0	$135	$270
Total	$878+35% vs. national avg	$3,240+35% vs. national avg	$7,695+35% 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 Los Angeles 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 Los Angeles

Full Kitchen Remodel

Full Bathroom Remodel

Solar Panel Installation

Back to national average for Subfloor Repair & Replacement

Los Angeles Estimate

Typical Range

$1,350–$6,750

vs. National Average

35% above national

Cost Multiplier

1.35x

Cost Per sq ft

$4–$14

Estimates apply Los Angeles's 1.35x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →