A verifiable license
Ask for a contractor's license number you can look up on the CSLB site. Ours is CSLB #1022608 (plus SPCB Co. Reg. #9901).
Bay Area Insulation Contractors · Licensed · 13+ Years
Insulation Contractors Near You in the Bay Area
Comparing insulation contractors? Here's exactly what to look for — and why Bay Area homeowners pick Attic Pros: properly licensed, top-rated, and 13+ years insulating attics and crawl spaces.
Free written estimateLicensed (CSLB #1022608)Top-rated & reviewed13+ years experience
Free on-site estimate · No pressure · We come to you
How to Choose
Choosing an Insulation
Contractor You Can Trust
Not all insulation contractors are the same, and the cheapest bid is rarely the best value. The right contractor sizes the job correctly, uses the right material and R-value for your home, and leaves the space clean and performing for years — the wrong one leaves gaps, mess, and callbacks.
Attic Pros has installed and removed attic and crawl-space insulation across the Bay Area for over 13 years. We're properly licensed, independently reviewed, and we put every recommendation and price in a clear written estimate — free, with no pressure. Here's what to weigh before you sign with anyone.
- Verifiable contractor's license
- Real attic & crawl-space experience
- Independent reviews and ratings
- A clear, free written estimate
- A workmanship warranty
- A local team that knows Bay Area homes
Do Your Homework
What to Look For in an
Insulation Contractor
Six things worth checking before you hire anyone — and yes, we're happy to be measured against every one of them.
Real, specific experience
Look for a team that does attic and crawl-space insulation day in, day out — not a general handyman adding it on.
Independent reviews & ratings
Verified Google reviews and third-party ratings (we're Diamond Certified and an Angi Super Service Award winner) beat a self-written testimonials page.
A written estimate
A good contractor inspects on site and gives a detailed written scope and price — free, with no high-pressure close.
A workmanship warranty
Reputable installers stand behind their work. Ask what's guaranteed and for how long before you commit.
Local knowledge
A team that knows Bay Area homes, climate, and code will spec the right R-value and material for your house.
Watch Out
Red Flags When Comparing
Insulation Contractors
If you notice any of these while getting quotes, keep looking — they're the warning signs behind most bad insulation jobs.
No verifiable license
A contractor who can't or won't give you a license number to look up is a hard pass.
Verbal-only quotes
No written scope or price means nothing to hold them to — and room for surprise charges later.
No reviews or references
No online reviews, ratings, or references you can check is a reason to be cautious.
High-pressure sales
"Sign today or the price goes up" tactics are designed to stop you from comparing options.
No warranty
If they won't stand behind the work in writing, you're carrying all the risk.
A bid far below the rest
An outlier-low quote usually means thin material, skipped prep, or cut corners you'll pay for later.
How We Work
How Attic Pros Handles Your Insulation Project
A good insulation job is about assessment and prep as much as the material. Here's what working with us looks like.
Free on-site assessment
We inspect your attic or crawl space, check current R-value, moisture, and any rodent damage, and confirm what your home actually needs.
The right material & R-value
We recommend the insulation type — blown-in, batt, and more — and the R-value that fits your home, climate zone, and goals.
Remove old insulation if needed
If the existing insulation is contaminated, compressed, or rodent-damaged, we remove and haul it away before installing.
Professional installation
We install to the specified R-value with even coverage and proper prep — no gaps, no shortcuts — and protect your home as we work.
Cleanup & verification
We verify coverage, clean up completely, and walk you through the finished job and what to expect.
Free written estimateLicensed (CSLB #1022608)Workmanship warranty
Why Attic Pros
Why Bay Area Homeowners
Choose Attic Pros
For over 13 years, homeowners and businesses across the San Francisco Bay Area have trusted us for attic and crawl-space insulation — because we do it right, in writing, and stand behind it.
- Licensed contractor (CSLB Lic. #1022608)
- SPCB-registered for pest-related work (Co. Reg. #9901)
- Diamond Certified & Angi Super Service Award winner
- Independently reviewed — verified Google ratings
- Free, no-pressure written estimate
- Workmanship warranty & a local Bay Area team
Real Customers, Real Results
Trusted by Bay Area Homeowners
4.8
★★★★★
Based on 1,900+ verified Google reviews — trusted for insulation & home services across the Bay Area
Google Review
★★★★★
These guys are awesome. Super clear comms to schedule, then received an extremely thorough consultation. We eventually decided to go with them as other shops in the area didn't communicate as well as Attic Pros.
Pedro Kroeff
Google Review
★★★★★
Tom from Attic Pros was great to work with! He was friendly, professional, and thorough during the inspection. He clearly explained everything he found and answered all of my questions. The whole process was straightforward. Thank you, Tom!
Daria Baevski
Google Review
★★★★★
Finding out we had a rodent infestation for the first time was incredibly stressful, but Attic Pros made the entire process so much easier! Jeremy was very knowledgeable when help preparing the estimate and the work that needed to be done. Their team that came to perform the work—Nico Otten, Juan Rodriguez, and Antonio Lopez—were amazing from start to finish. Communication was fantastic right from the beginning. The crew was super fast, highly efficient, and left everything very clean after sanitizing our attic, crawl space, and garage. They definitely gave us total peace of mind. They were also able to finish in one day!!
Annie M
Google Review
★★★★★
Our small cottage has a very narrow attic entrance. Denis from Attic Pros was willing to try and was able to enter to clean, vacuum, and replace the old insulation. Very professional, access areas were well shielded and protected. Powerful vacuum and clean up well after themselves.
Morgan Yang
Google Review
★★★★★
Tom Best came to our house to give us an estimate on new insulation. He was on time, very thorough and provided a detailed very reasonable estimate within an hour of his visit. What more could you want?
B Kellar
Google Review
★★★★★
Samim great service my attic was left very clean meticulous. I am so happy with the work that him and his team did great service. I recommend them highly. I would give them a 10 if I could.
Darlene Galindo
QUESTIONS, ANSWERED
Frequently Asked Questions
The questions people actually ask when comparing insulation contractors. Still weighing your options? Our team is happy to help.
Still have questions?
Talk to our team — we're here to help.
(800) 543-0382Check for a verifiable contractor's license, real attic and crawl-space experience, independent reviews and ratings, a clear written estimate, and a workmanship warranty. Be wary of verbal-only quotes, high-pressure sales, and bids that come in far below everyone else.
Yes. We're licensed under CSLB #1022608 and registered with the SPCB (Co. Reg. #9901) for pest-related work. You can look up our CSLB license number on the California Contractors State License Board website to confirm it's active.
Yes. We inspect your attic or crawl space on site and give you a detailed written scope and price — free, with no obligation and no high-pressure sales. That written estimate is exactly what you should be comparing between contractors.
We install and remove attic and crawl-space insulation, including blown-in, batt, and more, and we recommend the right material and R-value for your home. We can also remove old, compressed, or rodent-damaged insulation before installing new.
Compare the written scope, not just the bottom-line number: the insulation type and R-value, whether old insulation removal and cleanup are included, prep, and the warranty. A slightly higher quote that includes proper prep and a guarantee is often the better value.
Yes. Contaminated, compressed, or rodent-damaged insulation should come out before new insulation goes in. We remove and haul away the old material as part of the project when it's needed.
It depends on your home and climate zone — attics in our area typically target a recommended R-value range. We measure what you have and recommend how much to add (or replace) during the free assessment, so you're not guessing.
We serve attic and crawl-space insulation across the San Francisco Bay Area, for both residential and commercial clients. See the service areas below, or ask us about your city when you book your free inspection.
LOCALLY OWNED AND OPERATED
Serving the Greater Bay Area & Sacramento Area
Insulation Contractors Across the Bay Area
Local Insulation Service Areas
Ready when you are
Get Your Free Insulation Estimate
Tell us about your attic or crawl space and we'll inspect it, recommend the right insulation and R-value, and put it all in a clear, no-pressure written estimate.