I had my sliding door glass broken (see pictures) and need it repaired. Ramadane helped me get it…read morefixed and I cannot recommend him enough. He came by very quickly to give me a free estimate and very patiently explained the options with tempered glass, with film on each side. His price was cheaper than others and the ones that seemed cheaper turned out more expensive when you asked about the options. The price aside, he was very professional, honest, and did such a great job that I can't tell the difference with the new door!

Love our new yard door! Ram is very professional and did it in a few hours. My door now opens with…read moreease and is very good quality.

I remodeled my house in 2009 and had Marvin Windows installed at the back of the house, however I…read moredid not replace the windows in the front of the house as they were newer. In 2025, we decided to replace all the windows and the front door in the front of the house and wanted Marvin windows to match the front of the house. There are many window replacement companies out there that will build and install windows for you. However, we specifically wanted Marvin windows and we wanted to upgrade to the higher end Marvin windows as we had installed them in the back. Mark (the estimator) was very responsive and came out to measure and give us an estimate. We signed the contract and he said that we could expect installation in 3 months. Well, 3 months came and went and it seems our custom made windows from Marvin had some manufacturing issue and were delayed. Ok, so instead of a September installation, we were now we are expecting a December installation. It wasn't a big deal except that I had to restore my living room for Thanksgiving. This delay wasn't Window replacement Center issue, it was an issue with the Marvin manufacturing process. So, why am I giving a 5 star review. The installation was great. Oleg (sp?) was the lead installer and he did a wonderful job. My husband (a real DYI person and a perfectionist) even said that the workmanship was perfect. See attached pictures. They were here multiple days and left the rooms cleaner than when they started. Not a speck of dirt or dust was left. So, they only do new window replacement/installation. Meaning if you want a window where a wall exist, they don't do that. They don't fix existing windows (broken glass, old hardware). Mark did walk my husband through how to get a replacement part on another window were the hardware was rusted. They also don't do painting. You need to either paint it yourself on the inside or hire a painter to do this. Also, most of the installers speak very little English. We didn't find that to be an issue. If I had a question that they couldn't answer, they called Mark right away and we were able to work it out. The installers all came on time and there was even a day that I said they had to be done by 5 as we had a dinner engagement and they left when I wanted. Overall, this was a really good experience and I would hire them again to install any windows.

Amazing service and quality windows! Mark and the team were extremely professional. They had a…read moregreat price for replacing all the 65+ year old single-pane windows in my house. The team was fast and extremely efficient. The windows look great and an extreme improvement in blocking out sound and insulation.

Great service, quick responses, on time. They fixed some broken windows and made window screens for…read more9 windows. Great work! Very professional highly recommend.

Zeek did a great job. I needed the glass replaced in my sliding glass door. He came, did…read moremeasurements and returned in less than a week to replace the glass for an affordable price. Very nice man. I would highly recommend. thank you.

Responsive, courteous, and does great work!…read more I had a broken window in my living room. I called Zeek in the morning and he was able to come by that afternoon. After giving me great advice about which type of glass to use, he got straight to work. He finished up in about 45 minutes and the new glass looks great.

Just hired Zeek for another window repair and the service was terrific as usual. Good…read morecommunication, quick response time, and a fair price. As I said to him, I hope I never have to call you again but if I do I'll be glad to do it.

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.

This window subcontractor hired by Green Empire builders installed our windows incorrectly and…read morewe've had ongoing issues since installation. Workmanship was poor, communication was difficult, and the problems were not properly resolved. Based on our experience, I would not recommend this subcontractor.

Echoing other reviews on here that Bill McGowan is a scam artist. Paid over $3k for windows and…read morethen the company ran off with our money. Will be filing complaints. Update: Bill-- why wasn't there any communications then that you were failing rather than running off with our money? No one returned our calls or emails. My husband, Jeffrey Ho, paid for the windows.

William McGowan the owner took my money, never ordered the screen door even though 3 months have…read morepassed, and now called me saying he wont be giving a refund. They dodged my calls and emails for 3 months. Total scam. His company also illegally charged me 55% of the contract even though the state only allows for 10%. He is a thief and a conman. Edit: You were supposed to install my door in January. Wheres the door? You didnt even order it and its March.

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.

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!

Look no further than Cal Coast Window and Doors. This is…read morethe best company for product , workmanship, contractors to owner. We had then install, side garage door, 2 windows and 2 sliders. After 4 years one of our sliders had closing issues. Cal Coast owner sent a crew to fix it, which meant completely reinstalled the window and now works perfectly Thank you Team Cal Coast

Lubomir does quality work at a fair price. He's very responsive to potential concerns and a…read morepleasure to work with. Upgrading the windows on our 1950's house was the best thing we ever did and has increased our comfort and decreased our energy bills.

We needed multiple windows replaced and two large sliding doors installed in our home. The service…read moreand quality of work we received was outstanding! The workers, Ludomir and Ernesto, were super professional. Not only did they install the windows and doors flawlessly, but they also cleaned up every bit of the mess the installment caused and even polished the windows. I could not recommend them more highly

Prompt service. Beat competitors on value. Professional crew that is thorough about job…read morecompletion and clean up. Will definitely be a company recommended to my neighbors for all future needs.

I used Top Glass Co services for the first time and I was impressed with their work. My Table top…read moreglass was made with so much precision and care that I much prefer the glass that I have now. It looks beautiful. Their price is reasonable and the quality is high end. The delivery was flawless. I am so happy with the results.