Tajmahome

Insulation in San Jose, CA

Compare 6 local insulation pros. Typical service: $1854–$3575.

Top Insulation Companies in San Jose

  1. 1.Attic Crew

    4.9★ (143 reviews)

    4.9★ from 143 reviews

    +18005585857Website

  2. 2.Ideal Attic Insulation

    5.0★ (59 reviews)

    5.0★ from 59 reviews

    +14083669683Website

  3. 3.Triumph Insulation Solution San Jose

    5.0★ (28 reviews)

    5.0★ from 28 reviews

    +14089229608Website

  4. 4.Tri-County Insulation & Acoustical Contractors

    4.8★ (9 reviews)

    4.8★ from 9 reviews

    +18314752205Website

  5. 5.Central California Insulation

    5.0★ (2 reviews)

    5.0★ from 2 reviews

    +14082936755Website

  6. 6.Nor-Cal Insulation Inc.

    +14086413018Website

Insulation Cost in San Jose

Local ranges, adjusted for area wage and cost-of-living data.

ServiceTypical range in San Jose
Attic blown-in insulation$1,854–$3,575/job
Attic spray foam$3,972–$7,944/job

Insulation prices in San Jose run about 32% above the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.

Quotes on this page come from 6 companies serving San Jose, rated 4.9★ on average across 241 customer reviews.

San Jose Climate & Seasonal Timing

What San Jose's weather means for scheduling insulation.

Last spring frost
January 13
First fall frost
December 18
Annual precipitation
15.82"
Heating degree days
2,257
Cooling degree days
636
MonthLowHighPrecip
Jan42°58.1°3.07"
Feb44.7°61.9°3.11"
Mar46.6°65.7°2.54"
Apr48.6°69.3°1.18"
May52.4°74.3°0.51"
Jun56°79.1°0.1"
Jul58.1°81.9°0.02"
Aug58.3°81.9°0.02"
Sep56.8°80.1°0.18"
Oct52.5°74°0.8"
Nov46°64.3°1.68"
Dec41.9°58°2.61"

NOAA station data 6.13 miles from San Jose.

Permits & Regulations in CA

  • Painting jobs of $1,000 or more in California require a CSLB C-33 Painting and Decorating Contractor license
  • Remodeling that spans several trades requires a B General Building Contractor license
  • Work that disturbs paint in homes built before 1978 must be done by a Lead-Safe Certified firm under the EPA Renovation, Repair and Painting Rule

License required: CSLB C-33 Painting and Decorating Contractor license (jobs of $1,000 or more)

Sources: www.cslb.ca.gov, www.epa.gov

Insulation FAQs for San Jose

How much does attic insulation cost in San Jose?

Blown-in attic insulation in San Jose typically runs $1854-$3575 for a 1,000 square foot attic; spray foam costs two to three times more.

How many insulation contractors serve San Jose?

We track 6 insulation contractors serving San Jose.

Is insulation in San Jose more expensive than average?

Installation labor in San Jose runs about +32.4% versus the national average.

How much insulation does a home in San Jose need?

San Jose sees about 2,257 heating degree days and 636 cooling degree days a year; the colder the climate, the higher the attic R-value worth paying for.

Does insulation help with San Jose summers?

Yes -- with summer highs near 82F in San Jose, attic insulation cuts the heat load on the air conditioner as much as it holds heat in winter.

Do insulation contractors in CA need a license?

In CA, Painting jobs of $1,000 or more in California require a CSLB C-33 Painting and Decorating Contractor license. Adding attic insulation in San Jose rarely needs a permit.

Is spray foam worth it in San Jose?

Spray foam earns its price mainly when ducts or an air handler sit in the attic; otherwise blown-in at $1854-$3575 gets most San Jose homes the same R-value for less.

How many quotes should I get for insulation in San Jose?

Two or three; with 6 insulation contractors serving San Jose, compare the R-value and depth each quote installs, not just the price.