Cost to Wall Insulation (Blown-In) 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 wall insulation (blown-in) 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	$2	$3	$6
Materials	$620	$1,395	$3,100
Labor	$1,240	$2,790	$5,425
Permits	$0	$0	$310
Total	$1,860+55% vs. national avg	$4,185+55% vs. national avg	$8,835+55% vs. national avg

Budget

Blown-in cellulose, 1,000 sq ft of exterior wall, drill-and-fill method, patch holes

Mid-Range

Dense-pack cellulose or fiberglass, 2,000 sq ft, existing home retrofit with patching

Premium

Spray foam or high-performance dense-pack, full exterior envelope, older home

Material Options

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

Material	Cost/Unit	Pros	Cons	Best For
Blown-In Cellulose (Standard)	$1.00 - $2.00 per sq ft installed	Recycled content, excellent air-sealing properties, R-3.5/inch, fire-treated, widely available	Can settle slightly over time (dense-pack minimizes this), heavier than fiberglass	Most retrofits - the default choice for drill-and-fill wall insulationRecycled content, excellent air-sealing properties, R-3.5/inch, fire-treated, widely available
Blown-In Fiberglass (Standard)	$1.00 - $2.00 per sq ft installed	Does not settle, moisture-resistant, R-2.2-2.7/inch, lighter than cellulose	Slightly lower R-value per inch than cellulose, less effective air sealing	Humid climates where moisture management is a concernDoes not settle, moisture-resistant, R-2.2-2.7/inch, lighter than cellulose
Dense-Pack Cellulose	$1.50 - $2.50 per sq ft installed	Higher density (3.5 lbs/cubic ft) virtually eliminates settling, better air sealing than standard blown-in	Requires specialized equipment and experienced installer, slightly more expensive	Exterior walls where settling would reduce performance, high-performance retrofitsHigher density (3.5 lbs/cubic ft) virtually eliminates settling, better air sealing than standard blown-in
Open-Cell Spray Foam (R-3.7/inch)	$2.00 - $3.50 per sq ft installed	Excellent air sealing, fills irregular cavities completely, soft and flexible	Requires removal of existing drywall for application (open-wall install), expensive retrofit	New construction or gut renovations where walls are already openExcellent air sealing, fills irregular cavities completely, soft and flexible
Closed-Cell Spray Foam (R-6.5/inch)	$3.00 - $5.00 per sq ft installed	Highest R-value per inch, acts as vapor barrier, rigid structural improvement	Very expensive, not practical for closed-wall retrofit, off-gassing during install	New construction, below-grade walls, extremely cold climates needing maximum R-valueHighest R-value per inch, acts as vapor barrier, rigid structural improvement

Other Projects in San Francisco

Full Kitchen Remodel

Full Bathroom Remodel

Hardwood Floor Installation

Back to national average for Wall Insulation (Blown-In)

San Francisco Estimate

Typical Range

$1,550–$7,750

vs. National Average

55% above national

Cost Multiplier

1.55x

Cost Per sq ft

$2–$6

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 →