Having our old 1930 house insulated has far and away been the best investment we've made in our…read morehouse. We've lived in the house for over 40 years and were used to sweaters and sweats in the winter and during our hot days spending more time in the cooler downstairs. We now leave the thermostat set at 64 for a low and 74 for a high and the heater rarely goes on. Today (9/9/2026) we think the AC might actually go on later today. Yesterday the house never even reached 74. We had building efficiency do the insulation almost 2 years ago and have gotten so used to our house being in a comfortable range all the time we rarely even think about it. This latest heatwave has reminded us of how glad we are that we did it and that we should give them a plug again! The process itself is fairly disruptive but doesn't take too long and Building Efficiency was very profesional and helpful in minimizing the disruption. Our only regret is that we didn't do it long ago.

Building Efficiency evaluated the property and educated us thoroughly before providing a…read morecompetitive to install a heat pump and water heater. They communicated well, kept a clean work site, and the staff was professional and efficient. We've been very happy with the results.

We were initially told by another HVAC company that we needed to replace all of the air ducts and…read moreinsulation in our attic, add insulation in the rafters, and address rodent droppings in the crawl space. When Elmer came out, he took about 30 minutes to walk through the house and gave us a completely different--and much more reassuring--assessment. He identified entry points where rodents were getting into the crawl space, explained that the air ducts did not need to be replaced, and instead recommended insulating the rafters, reinsulating the attic floor, and cleaning and reinsulating the crawl space. He also suggested installing an attic fan to improve air circulation. Throughout the visit, he was straightforward, knowledgeable, and very approachable. We decided to move forward with the attic fan. Umar updated the contract promptly and even came out personally to help program the fan and connect it to my phone. Their team worked tirelessly over four days and did an excellent job. They were professional, detail-oriented, and left the house clean when they were done. We enthusiastically recommend Insulation Alliance. Thank you, Elmer, Umar, and team! ST, Redwood City

I discovered this shop on Yelp after it recommended several local businesses. I had multiple quick…read morequotes, but Umar provided the greatest response and cost, as well as a quick two-day schedule on Sunday, which is my day off, so he saved my days. His worker blew insulation through the holes he made in the walls. and expertly completed within four hours. Everything was cleaned, vacuumed, and dust cleaned after work. Umar emailed me the certificate letter so that I could show it to the City Inspector. Thank you, Umar, and your workers for being professional and responsible. You deserve to have the very best business.

Axel is seriously one of the greatest service professionals I've ever worked with so far. He…read moreconducted a thorough investigation and by the end of it, not only had I learned a bunch of things I had previously misunderstood but he laid out what work I should actually consider and in what order. No hard sell. No BS. He literally said the words "here's what I would do if it were my home" before laying things out in priority order and detailing what he deemed necessary and why. That's exactly the type of professional I want because you can tell they truly have your best interests in mind. His team was also great when it came time to do the work. They went extra distances left and right to fix things along the way and point out new issues. Their dust encapsulation and safety gear were very great to see as well because it shows attention to detail along with care for the customers as well as their own employees' health. We ended up with quite a large job with them but I would hire them again for anything I can. Simply exceptional.

All was great from initial contact, project evaluation, project cost, installation and follow up…read more The crew which removed the old attic insulation and installed the new batt insulation were excellent. The communication was excellent in keeping me informed on appointments.

I waited a while before leaving this review because you never really know if a company's service…read morewill continue to meet expectations over time. After five months, I can confidently say that this company has kept their word and stood behind their work. Back in April, I started noticing a lot of droppings in my garage. I carefully read Yelp reviews, received quotes from three different companies, and ultimately decided to go with this company. They responded very quickly, and after they completed the work, I didn't see any more droppings for about five months. Then last week, I noticed droppings again and immediately called them. Nathaniel came out the very next day, found a new hole, patched it, and set new traps. As he was leaving, he simply said, "Keep us posted." That is exactly the kind of service I appreciate. Knowing that I can contact them anytime during the warranty period and that they will actually come back and take care of the problem gives me real peace of mind. It makes me feel that the money I paid was absolutely worth it. Thank you, Nathaniel and the team, for standing behind your work and providing such dependable service!

Although I didn't go with this company, Eddie was super helpful in identifying what I needed. I…read morehad a self inflicted violation through the city of SF that needed to be cleared. My former tenant was a hoarder which gave rodents a proper area to nest. My current problem (fortunately) was that the infestation was no longer an issue but I still needed to clear the violation. Eddie wasn't sure if the city would accept only exclusion work (closing up entry points) and so rather than taking on the job he pointed me towards what I should be looking at when choosing a company. I learned quite a bit from him and am very thankful for his honest feedback!

Carlos and his team are great. I was tired of sweating in my hot garage and sent a yelp request to…read moreCarlos. He called me back in 20 minutes (after they were closed). He asked some question about my insulation needs, we agreed on a reasonable price, and he said he could have his team there the next morning! The installers arrived on time, were super efficient taking only a couple of hours, and cleaned up everything like they were never there. I went into the attic to see the results personally (they did send pictures) and the quality of the install was great. Carols is a straight shooter and his team are professional. I would use them again.

Carlos' company is fast and efficient. They came in at 8 AM and was finished by 1 PM to spray foam…read moreabout 600 ft.² of my garage roof. You can tell they pay attention to detail because the garage was left cleaner than what I originally left it as. For my experience, many contractors tend to leave a mess behind sometimes for their customers which can be frustrating. For my research with close cell spray foam there is definitely a technique behind it for proper installation, and I am pleased with what I see. I did expect more fumes from the spray foam, but surprisingly the product they use has minimal smell to it.

Rodent Busters are fantastic. Very happy that I became a long-term customer to protect our house!…read more In particular, Naj has been awesome. He is very detail-oriented and thorough in his work, and shows strong ownership over quality of his work and protection against rodents for his customers. From sealing all entry points both inside the crawlspace and attic. It's airtight protection. Very satisfied and highly recommend Naj and the Rodent Buster team.

They made an appointment with me for removal of a large wasp nest. They never showed up, never…read morecalled, never heard from them again after initial contact.

I started to hear little pitter patter footsteps and gnawing sounds at 5 am, and on day 2 of this,…read moreI messaged Attic Crew. They sent someone the next morning for an assessment and got us scheduled right away! In the interim, they gave us recommendations to deter the rats, which worked. Carlos and his crew arrived on time and finished quickly. The price was reasonable (honestly, on the cheaper side yet the quality and professionalism was great!). There was an issue with a short circuit because a rat chewed through the insulation that we didn't notice until the weekend, but Carlos responded immediately and came over to fix the issue. We are so grateful to Carlos and the Attic Crew for helping us with rats in the home, helping us feel more confident about keeping them out for the foreseeable years, and for all of their professionalism, knowledge, and expertise! Would definitely recommend!

We worked with Jay, Andres(?), and Angelica. They really went above and beyond to help educate us…read moreabout the process of installing a moisture barrier and all the factors that go into successful rodent abatement. The communication was excellent, even on a holiday weekend I got called back within an hour of reaching out with questions, which I certainly did not expect! They arrived promptly for appointments and were thoughtful about avoiding tracking dirt into our home. They worked with us to customize their work to our coastal climate and were very transparent about exactly what materials they would be using (all top of the line, industral-grade!). I have pets and toddlers and they took my concerns about chemical disinfects seriously and offered several options to make sure I was comfortable with what was used in our home. They really seem to take pride in their work and enjoyed sharing before and after pictures to demonstrate all the improvements they made to our crawl space. I could not be happier with my choice to hire them, and plan to work with them again when I'm ready to replace my attic insulation.

Wilson did and super exceptional job. He is so nice and approachable. He explained everything…read morebefore and after. Awesome job! Thank you. We definitely recommend the service.

Had an inspection for possible rodent activity today with Jesse. He was very professional and…read moredetail oriented and communicated well. I would definitely recommend this company for a thorough inspection. No rodents were found, but there were some other areas that may need to be addressed.

We had rodents dancing above our heads at night in our low head-room attic. We called Attic Pros…read morewho did a cursory "inspection" and recommended complete replacement of attic insulation, replacement of most A/C duct work in the crawl space below the house, sanitizing, and sealing up "all" entry points for critters. It was very expensive but we went with them mainly because the "inspector" (a salesman through and through) had excellent English and promised to personally manage the project. He answered one subsequent question and then disappeared, never to be heard from again. The estimated 3-day job took 3 weeks, with schedules shifting daily, different crews, minimal work days, redundant and often incorrect communication via text and email, and no explanations of what was going on. The crews were friendly but spoke minimal English. It was difficult to understand what was done, not yet done, or not intended to be done. Once they left, the critters remained. Staff came back 3 or 4 times to seal additional openings ... to the wrong area (crawl space rather than attic). The most recent visit by Jorge was very good. He had good English so his explanations were understandable and helpful. He found and fixed two more openings - these at roof level - and recommended a spray that can repel rodents from returning. I bought and used that (why don't they do that themselves?) and the first night at least was the first "quiet" night in months.

Tom is very professional. He explained the details of attic cleaning they do, showed the photos and…read morewhat all cleaning service needed, and followed up with itemised quote. Very quick in responding to queries over the phone and text.

Did a complete Attic clean up and R44 blow in insulation & in wall insulation for an old 1959…read morehouse. I would say, they did an excellent job - Starting with Jeremy, who accommodated my schedule for preliminary inspect and gave me a on the spot quote. Elder and the guys did an excellent job in covering up the entire house and finished the job in 2 days. My house had no insulation in the walls- to very less in the attic. After the insulation my Heat as well as Cold is retained inside the house. Heat turns on once in a 24 Hr cycle vs multiple times in an hour previously. If you are thinking of in wall insulation, it's totally worth it. The quote was the most competitive and they were very flexible. I am still closing out the multiple holes in the wall, will take time as i prefer to do it myself- I had plans to paint anyway .

Good solid insulation company with actual employees from the company doing the work, and not just…read morehiring outside contractors. Everyone was extremely experienced and the work was completed on my home quickly and efficiently, with everything having protective plastic sheeting all the way from my front door to the work areas. The sales rep that came out to do the initial inspection and to give a quote, was very experienced and answered all my questions. We agreed on a course of action, and I later discovered I needed additional work, and he worked with me on getting that added. The workers arrived even earlier than expected on the day they were working on our house. They clearly had all the appropriate material and machines and equipment to do the job correctly. I feel very good about everything that was done and I would definitely recommend them. Everything was left clean and there was nothing I had to do to clean up behind them. The reason I am not giving five stars (only 4 stars) is because of the paperwork having multiple errors, and they took weeks to get me the pictures of the before and after shots of the work they did. I asked them to correct some errors I found in the paperwork, and even found more errors and had to ask them a second time to correct the invoice for my records. I also questioned whether the correct insulation was put into a certain wall, because the paperwork was incorrect. It took a physical callback from a different person to physically check, and he didn't really seem to understand clearly what the problem was. I showed him pictures of the insulation rating that I took for that wall, and he was about ready to go and purchase the insulation and redo the specific wall I was questioning. But then he just called the installers and they told him they put the correct R-Rating on that wall and then he left. He clearly was not trained well enough, and I still don't know if the correct insulation was put on that wall. All the hassle of the paperwork correction and reinspection of the work was not necessary if they paid attention to details better. But other than the paperwork and questioning a specific wall, the actual work was professionally done and these guys clearly are a good professional organization. Just keep an eye on the paperwork and go over all the lines of work in the contract before you sign it. Don't rush and sign what they give you. Read every line on the contract to look for errors. As far as the value for the service and work, they were right in the price range I was expecting. Don't hesitate to use them.