Lema Windows and Doors did a great job on our family home…read more They were very responsive. Leszek communicated everything about the project clearly, answered all of our questions with great detail, and provided the best advice. We originally contacted them about a patio slider and they provided the best quote, focusing on quality and what we wanted, and service. We asked them for additional help with another project that we were doing ourselves. They helped us resolve the issues we had with a different leaking window and door. They caught several problems with the advice and plans we'd been given, which saved us from long-term issues, so we ended up expanding the scope from just the patio to a door and window with them. We got the look we wanted, the safety we wanted, and it was all installed so quickly and professionally. The stucco work looks perfect and was also done very professionally. We will definitely use them for any future work on the house. Highly recommend.

I had Lema Windows pull out a window to replace it with a door. The door is great quality. The…read moreprice was very reasonable and the work done exceptionally well in one day. Communication throughout the process was very good and no surprises anywhere. Will definitely have them come back when I change out my slider.

We recently replaced all our windows and patio door, and Bestoff Windows did an excellent job. The…read moreentire project was completed in under two days, and everything--from the initial assessment to installation--was smooth and well organized. Sergey, the owner, is great to work with--very straightforward, no sales pressure, and no upselling. His crew was professional, efficient, and paid attention to detail. They came highly recommended by our neighbors, and they absolutely delivered. Highly recommend!

Extremely pleased with the project done for my house in Walnut creek this summer by Bestoff Windows…read more. Everything looks great and I'm saving money on PG&E bills with my new dual pane energy efficient Anlin windows . The best out of it is the sliding door with a built into the glass pet door for my dog to go in and out without bothering me all day long )))). My wife likes the most that outswing French door for our guest bathroom with the contemporary nickel hardware . Highly recommend,extremely competitive local business. The crew leaded by Alex is well oiled team-fast,professional,detailed and efficient work. Five stars no doubt. Also looking forward to get the federal tax credit for my new energy efficient windows installed with my tax returns in 2026. Thank you,guys.

We used Royal Window and Door for our home closet door renovation in December 2023. We met the…read moreowner, Andrew, at their Concord showroom and explained the door design we were interested in. We ultimately chose Royal Window & Door because not only do they supply the doors, they'll paint, install, and dump your old doors. On install day, the crew was very friendly and completed install within a couple hours. I would recommend Royal Window & Door for your future project!

Our entire experience with Royal Window and door was fantastic. From the moment I walked in to…read moretalk to David about a last-minute project, to completion with excellent work done by Jamie... hands down 10/10. With David and Jamie's help we were able to make a lot of last-minute decisions and they installed three beautiful skylights for us. What stood out from the experience was the amount of detail and time David took to explain the options to me and they were able to expedite everything. We will use them for doors in the future. Great business!

Justin, first I want to say thank you for being so efficient and kind…read more I was very happy with your service fixing one of my broken shower doors and you are very reasonable in pricing compared to other post Covid pricing that was outrageous. I definitely recommend. Hands down. Thank you again.

Justin installed a custom glass shower door for my bathroom remodel. I had some concerns about the…read morewaterproofing the primary contractor had done on the shower curb, and Justin was able to figure out how to avoid drilling through the curb in the wettest area. The glass looked amazing, I'm glad we went with the Starfire clear glass. Most importantly - about a year after the install I noticed a little bit of water getting past some of the glass near the showerhead. Justin came back out and touched-up the silicone for no charge, and also replaced the wiper at the bottom which had a bit of friction. I highly recommend this company!

Super helpful in pointing me in the right direction. Great customer service, even if it meant…read morelosing a customer.

Great work at a fair price. Installers were very polite and efficient. Finish work was great…read more Would have liked more counsel on getting sound proofing since we're close to the airport. Non-soundproof windows have a noticeable ring to them.

After a frustrating experience ordering a sliding door from Home Depot, I found Dolan's Lumber,…read moreWindows and Doors. From the start, their customer service was outstanding. They responded quickly to my inquiry and every follow up email I sent. Brian went above and beyond to help me, and even shared my situation with Milgard. He was also very knowledgeable and recommended upgrading the screen door for the slider since the standard one can feel a bit cheap, and suggested upgrading the glass to help with temperature regulation. He also gave me a quote for the exact door I originally ordered from Home Depot, in case I didn't want to upgrade anything. I really appreciated the time he spent helping me, especially since it was just one slider door. Excellent customer service. They definitely have my business going forward. Highly recommend!

We visited Dolan's at both the Walnut Creek and Concord locations on two separate occasions while…read moreshopping for doors and windows. In both instances, there were multiple employees working at the front desk area on their computers. While they may have been busy, no one acknowledged or greeted us when we walked in. Even a simple "Hi, we'll be with you shortly" would have gone a long way. My wife spent about 10 minutes browsing the showroom during one visit and we still were not approached. We ultimately left both times without speaking to anyone. We understand that some showrooms operate by appointment, and if that is the standard protocol, that is perfectly fine. However, a quick greeting, asking whether we had an appointment, or offering to schedule one would have created a very different experience. We did not have this issue at Golden State Lumber or Ashby Lumber, where we were promptly acknowledged and assisted. Unfortunately, based on our experience, we will be moving forward elsewhere.

Highly recommend Windows4U. I got bids from 2-3 different places and these folks were both the…read morefastest to the respond and the best price. They installed 3 new windows and a set of patio doors for my house. They were super responsive in every stage of the process. Emails were usually returned within an hour and always within the day. Their lead time estimate in getting the windows made was spot on. The quality of the windows feels good so far. I have a 100+ year old house with big old solid wood windows and I'll admit the new vinyl ones don't have the charm or look/feel of original wooden ones. But Windows4U also convinced me that replicating this old look would cost 4x as much. And its not their fault I chose the vinyl ones. They installed all the windows and door in one day and the team that was onsite worked HARD. Shout out to Mikhail and Vladimir who did a great job. They cleaned up everything so well it was hard to tell they were ever here.

Very good and recommended company! Alex and Leon are very professional, decent, and always…read moreavailable. If you need new windows or doors, I HIGHLY RECOMMEND!

Excellent company to work with...highly recommend. This was the second time I used them and the…read moreteam does Superior work.

Fabulous! The entire crew, from owner, to office to installers were…read moreoutstanding. I would definitely recommend them to others and use them again in the future.

From start to finish my experience with Cal Coast getting retrofit windows was fantastic!…read more Sal was the first to come out to give the initial quote and product options, he was very personable and great to work with. Sal was able to help with good pricing to meet my budget needs. Gary then came next to do final measurements before ordering; this was pretty quick work and he was very thorough. Once the Windows were built and ready to be installed, the installation manager Lorna was very quick to schedule an installation date and accommodated my scheduling requests. On the installation day, Juanito and Mauricio arrived on time, worked very efficiently and professionally, and did exceptional installation work. I would highly recommend Cal Coast to anyone looking for new windows!

I can't say enough good things about this company. From start to finish, everything was handled…read moreprofessionally and exactly as promised. Their pricing was fair and transparent--no surprises, no upselling, just honest numbers that made sense. What really stood out was their timeline. They showed up when they said they would, stayed on schedule, and completed the project right on time. That alone is rare these days. The installers were top-notch--respectful, clean, and clearly took pride in their work. They treated our property like it was their own, which made the whole experience stress-free. If you're looking for a company that delivers on price, timing, and professionalism, this is it. Highly recommend!

I had used this glass company in the past, and recently worked with the new owners after they took…read moreover. They were confident they could handle my project, so I left it to them and they delivered. The husband-and-wife team clearly takes pride in the business. The work was clean, efficient, and done right, especially with large mirror installation for my home gym. Great to see the same company in good hands.

I can't say enough good things about Diablo Glass Company in Concord! They truly saved the day when…read moreI had a last-minute glass emergency. I reached out with a tight deadline, and their team jumped right in without hesitation. The customer service was absolutely amazing--responsive, professional, and genuinely helpful from the first call through the final installation. They made the whole process stress-free and went above and beyond to accommodate my urgent needs. The quality of the work is exceptional. The glass looks beautiful, fits perfectly, and feels incredibly durable. You can tell they take real pride in their craftsmanship. If you're in the Concord area and need custom glass, shower doors, mirrors, or any glass work done right (especially on short notice), I highly recommend Diablo Glass. They're a local gem! Thank you again to the entire team--you made a stressful situation turn out perfectly.