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We recently had eight windows and a sliding door installed by Cal Coast Window and Door, and the…read moreentire experience was outstanding from start to finish. Chris did an excellent job guiding the project and making sure everything went smoothly throughout the process. The installation crew (Manny and Omar) were absolutely amazing, professional, efficient, detail-oriented, and incredibly clean. They worked hard, respected our home, and left everything spotless when the job was complete. If you're looking for a company that provides great communication, quality workmanship, and exceptional customer service, I highly recommend Cal Coast Window and Door.

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We hired Sergey and Bestoff Windows to replace every single window in our home and couldn't be…read morehappier with how it went. They were noticeably more affordable than the other bids we got and there were no surprise charges along the way, which seems rare with home improvement projects. Everything was transparent and laid out up front. They showed up exactly when they said they would, and communication was excellent the entire time. Every question we had got a quick, clear answer, and we always knew what to expect next. Didn't have to call multiple times or send a bunch of emails. The new windows look fantastic the crew cleaned everything up after the install. No dust in the house or materials in the yard. We have recommended Bestoff to a few friends already. If you're looking for a window installer who's fairly priced, dependable, and respectful of your home, we'd recommend them without hesitation.

Overall great experience with BestOff Windows. This was my second time using Sergey. Everything was…read moresmooth and as expected. Communication was clear. Highly recommend!

AMG Doors & Windows

4.6

(49 reviews)

Great communication, highly recommend…read more Mike was very helpful during the consulting phase and helping us select our new door. He was very patient. Our installation was done by Joel Guzman,, he was incredible. The installation was perfect. It was even better than we had expected. He is a true pro.

We had a great experience with AMG Doors! They helped us build and install our ProVia door, and the…read moreentire process was smooth from start to finish. Communication was excellent, and they were responsive and easy to work with throughout the process. The door installer did a fantastic job -- everything was installed carefully and looks great. We also felt the pricing was very reasonable for the quality of the product and work. We're very happy with our new door and would definitely recommend AMG Doors!

Lafayette Glass

3.8

(57 reviews)

We've now used Deanna three times and have been very happy each time. She replaced two windows for…read moreus, and most recently installed a beautiful wall-to-wall mirror above the vanity in our master bathroom. Everything was done carefully, the fit was perfect, and her pricing was very fair. I noticed a few reviews mentioning that scheduling or call backs can sometimes take time. Lafayette Glass is a small, family-owned business, and that's often what happens when someone does excellent work at honest prices--word spreads and suddenly the phone rings faster than one person can answer it. As a former small business owner myself, I used to say my business let me work half days... I just got to choose which 12 hours I liked better. If you want quality craftsmanship and reasonable pricing, I've found Deanna is absolutely the person to call. A little patience may occasionally be required, but her results speak for themselves. We'll definitely be using her again.

They did a good job...office was a little overworked I guess bc they kept confusing me with a…read moredifferent customer...but got it installed and everything good at reasonable price

Golden State Builders Group

(48 reviews)

Just wanted to come on here and say Leo is an excellent project manager. We will continue to refer…read morepeople to this company because of Leo. He knows what he's doing and he's very honest and upfront about everything. Keep him around!

Awesome crews Project taken longer than anticipated to…read moreensure everything is done right We did stumbled into some challenges but they were willing to work with us to ensure a satisfactory results and so glad they pulled it through for us. Lesson learned to have everything spelled out in details to avoid conflict or confusion. With that they helped us through this process. Happy to show off our new "home" Thank you

Bailey Windows

4.5

(8 reviews)

Great people doing a great job! Special shout out to Evan…read morewho went out of his way to make sure we were happy. I highly recommend this company!

I highly recommend this business…read more I'm a designer and I have multiple projects that involve replacing windows and doors. I always work with Bailey. They are always available to come out and give me a quote, they always double check there measurements and take care of the work for the beginning to the end. Very professional, they have everything a client will look for.

Custom Exteriors

4.3

(382 reviews)

We had all our windows replaced with Anlin Delmar dual pane windows from Custom Exteriors 14 years…read more(2012) ago. Never knew about life time warranty until last month, one of the window cracked. We didn't have any receipt or anything, just an email we did 14 years ago. We just contacted the company on their website and amazingly, they have the record by the address. The service department was so helpful, they contacted us and contacted the manufacturer to set up appointment with the case number to get it replaced. The windows were replaced 14 years ago in one day and we had many custom sized windows. The amazing thing is they know exactly which window that cracked by us describing the location of the window. Anlin Delmar (Milgard) called us and setup the appointment. They came and replaced the windows in a few hours. It was amazing and we're extremely happy. Now we know, go with the best and reputable company like Custom Exteriors and a good manufacturer like Anlin Delmar to have after service years after the work is done. Would we recommend Custom Exteriors and Anlin Delmar? The answer is obvious, YES.

Custom Exteriors replaced all the windows of my condo. They were on time, efficient, neat, and…read moreprofessional. My house stays warmer in the winter and cooler in the summer.

Capital City Windows

(3 reviews)

We had Nick and the crew from Capital City Windows replace 5 windows on the front of our house…read more They had good clear communication, a reasonable price, and did a high quality on-time installation job. The windows look great and match well with the quality and style of the rest of our windows which were replaced a few years ago during our remodel. I highly recommend the team at Capital City Windows if you are in need of window work on your house!

Owner Nick was present during the entire installation process of putting in 16 retrofit windows in…read moremy home in Concord CA. He and his crew were meticulous in their work, and I didn't have a single issue that needed addressing after their work was completed. That is saying a lot as I am a particularly picky person when it comes to contractor work on my home. Their protection of my home's interior and exterior was thorough, and they left the work areas as clean as when they first arrived. Needless to say, this company comes highly recommended, and offers the best workmanship at a very reasonable price.

BestOff Windows Inc

(278 reviews)

We hired Sergey and Bestoff Windows to replace every single window in our home and couldn't be…read morehappier with how it went. They were noticeably more affordable than the other bids we got and there were no surprise charges along the way, which seems rare with home improvement projects. Everything was transparent and laid out up front. They showed up exactly when they said they would, and communication was excellent the entire time. Every question we had got a quick, clear answer, and we always knew what to expect next. Didn't have to call multiple times or send a bunch of emails. The new windows look fantastic the crew cleaned everything up after the install. No dust in the house or materials in the yard. We have recommended Bestoff to a few friends already. If you're looking for a window installer who's fairly priced, dependable, and respectful of your home, we'd recommend them without hesitation.

Overall great experience with BestOff Windows. This was my second time using Sergey. Everything was…read moresmooth and as expected. Communication was clear. Highly recommend!

iRepair Cell & Tablets

(579 reviews)

•$

another solid win with iRepair! Love these guys, they are the absolute best. Look no further,…read moremasterful replacement of charging ports on 2 iPads and my iphone 15 pro max.

So, so , elated! I struggled for two days trying to figure out what the hey, hey was going on with…read moremy cell phone , iPad and watch! A recommendation from my sis to iRepair Cell & Tablets got me me back in the saddle again with my all my devices! Yama and Anthony were amazing!! Problems solved in seconds!!!! Thank you so much for your ingenuity!!! I was so relieved that I didn't mess it up as I thought I may have pushed, prodded and toggled too many times on my

Valley Glass Company

4.2

(104 reviews)

Update: A couple weeks after the job was done, I found that…read morethere was a little water leaking from underneath the seal. It's because my bathtub is slightly non-level and that made the installation tricky. I called them, they came out right away and treated the problem with urgency, they dismantled the installation, figured out the problem, and resolved it--all within a couple hours. Now, months later, everything is still perfect. Would still recommend them. Original Review: I reached out to Valley Glass Company--a local shop just up the road from me--after a disappointing experience at a different business. My job was seemingly simple: install a bathtub shower door. This is a brand new installation. Upon contacting Valley Glass, I had a response within a working day and just another day later I had somebody come out to take measurements. There was no hard selling, no complicated pricing structures, just a straightforward "here's the job, here are a few options that can change the glass and the enclosure." The price quote was very fair. Now, just 1 week later, my new bathtub shower door is installed. Altogether this process took about 2 weeks. Job looks good, installers were professional, and I'm happy. Thank you!

We brought in a shower seal that needed replacement. When we brought it home we had a lot of…read moredifficulty getting it on. Steve had mentioned that if we had trouble to come back and he would give us instructions. It turned out that we had a 3/8" width instead of 1/2". which is the correct size. Steve cut a new replacement for us and it went on seamlessly. He was great at making sure it worked, and we highly recommend Valley Glass. They were great!!

East Bay Handyman Services

(67 reviews)

I had an excellent experience with East Bay Handyman Services and Nazari. He arrived on time,…read morecompleted all of the work I needed, and took the time to make sure everything was done correctly instead of rushing through the job. His attention to detail and workmanship really stood out. His pricing was fair, communication was great, and the entire experience was professional from start to finish. I'm very happy with the results, plan to hire Nazari again for future projects, and would gladly recommend East Bay Handyman Services to anyone looking for reliable, high-quality work.

Very easy to reach, quick to come out to the property. Nazari was friendly and did a great job. He…read moreseems to have a wide variety of skills which is perfect for the misc tasks I've been needing to have done. He installed a new range hood and recaulked our bathroom. Even did a bit of electrical work. I'll definitely hire them again.

Iron Horse Windows and Glass Showers

(66 reviews)

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 did a great and prompt job installing our broken tempered glass. Super easy to work with and…read moreprovided a fair price, far better than most quotes I received.

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Jay S.

0

1

0

2 months ago

We recently had our windows replaced by Windows4U, and I cannot recommend them highly enough. They exceeded our expectations in every single category: Extremely Professional: The crew was courteous, respectful of our space, and kept the work area incredibly clean. Their craftsmanship and attention to detail were top-notch. Punctual & Timely: They arrived exactly when they said they would and knocked out the project right on schedule. No hanging around or unexpected delays. Superb Communication: From the initial consultation to the final walkthrough, they kept us informed every step of the way. Every question we had was answered promptly and clearly. Overall, what could have been a chaotic home improvement project was a genuinely pleasant and stress-free experience. If you want high-quality work done by a reliable team, look no further. We will absolutely be using them again in the future! Thanks Alex. read more

Ankit K.

0

1

0

4 months ago

Alex and the team at Windows4U provided phenomenal service when I had my windows and doors replaced last year. The entire crew demonstrated extreme professionalism and deep knowledge throughout the project. They performed great work with such efficiency that no one in the house experienced even the slightest inconvenience. The project was completed exactly on time, supported by excellent communication at every stage. Furthermore, their pricing was the best among all the contractors I contacted. I especially appreciated how they shared their honest opinions and helped us make product decisions based purely on facts and their extensive experience. I have already shared their contact details with my circle and will definitely call them again for any future needs. I highly recommend Windows4U for anyone seeking amazing service and quality workmanship! read more

Matt T.

0

2

8 months ago

I recently had new windows and a sliding glass door installed by Windows4U, and the experience was excellent from start to finish. Alex and Leon provided a free consultation, were extremely knowledgeable, and never pressured me into a sale. Alex was my main point of contact and was always responsive and clear with communication. Everything that was promised was delivered as agreed. On installation day, both Alex and Leon were on site and brought in two crews to complete the job efficiently before the rain started. The crews were professional, respectful of my home and family, and did a thorough job cleaning up afterward. I highly recommend Windows4u to anyone looking for honesty, quality work at a fair price, and excellent craftsmanship. read more

Kevin W.

2

24

13

2 years ago

For windows replacement in my new investment property in Concord I used local company Windows4U, to update all my 7 windows and 1 sliding door. They did a fantastic job. From the beginning to the end they were very professional, thoughtful, and diligent. They have fair prices and excellent teams. Great communication throughout. I highly recommend. Also side note, changing windows and doors makes such a big difference in how the house looks and feels, more so than you might imagine at the outset. It's a worthwhile investment. Thank you guys! read more

Lucas

0

1

0

2 years ago

We needed some windows replaced and reached out to Windows4U on Yelp. They got back to us very quickly and gave us a quick quote based on our measurements. They stopped by the next day to measure the windows exactly. The new windows were ready to be installed after three weeks. Mike and Vova were very nice and took their time to make sure everything was done right and looks nice and clean. They waterproofed everything and even adjusted our front door. We will definitely contact them again if we need more window work! read more

Kristina S.

198

12

4

3 years ago

I'm genuinely impressed by the service I received from Leon and his crew for the windows and patio door installation in my house. From the initial appointment to swift delivery and the two-day installation, the project was smooth, clean, and on schedule. The windows fit perfectly, the craftsmanship was superb, the pricing was highly competitive, and the crew was a pleasure to work with. Five stars, guys! Keep up the excellent work! read more

David A.

0

1

0

3 years ago

Very pleased with Windows4U. Alex and his team replaced 5 windows in the front of our home and we could not be more pleased. The insert windows they measured fit perfectly! They even adjusted the hardware on one of the windows to accommodate the interior shutters we have. They were friendly and cleaned up after themselves - We definitely plan to use them again for the next set of windows we need to replace. read more

Yvette W.

0

1

0

1 year ago

I would like to express my satisfaction with the window installation carried out by Windows 4U. The team arrived on time and demonstrated a high level of expertise throughout the installation process. Their professionalism was commendable, and the quality of their work met my expectations. I appreciate their attention to detail and would recommend their services to others. read more

Tony A.

0

2

0

3 months ago

Great experience from the start to finish, I met with Alex and Leon, great price roughly $3k less then any other contractors I spoke with, they respond to my emails and phone calls/ text in a timely manner, I found Vladimir and his crew ( the installer) very efficient and really caring about my property. Thank you, 100% recommended. read more

Kevin L.

0

3

0

10 months ago

Good customer service and reasonable price. They were easy to work with and did a good job installing new windows. The installation team was on time and left everything neat. I noticed an improvement in my home's comfort and appearance after the windows were installed. I'd definitely use them again. read more

Salvador B.

0

1

0

8 months ago

Great experience overall. They installed a sliding door for me and did an excellent job. Their customer service was amazing! Alex was professional and easy to work with and their prices were by far the best. Everything was done efficiently and the door works perfectly. Would highly recommend them. read more

Anna K.

0

1

0

2 years ago

Windows4U is great company! They sell high-quality windows and doors for an affordable price! I was really impressed with the customer services and the way how the whole process was handled from the day one. I am recommending to all my family friends to go with Windows 4U! read more

Jessica M.

0

10

3

2 years ago

I had great experience with Alex and this team they did an excellent work with installing window's and a door at my home, they gave me a great price for a high value window's and door, if you are looking to support a local and businesses you should contact Windows4u. read more

Sepehr C.

0

3

1

2 years ago

I had an awesome time with them installing a few windows and a sliding door in my house. Their prices were super reasonable. They use top-notch windows and have the best customer service ever. Thanks a bunch! read more

Jimmy C.

34

3

1

16 days ago

I hired Windows4U to change my sliding patio door. They did a wonderful job, we're super happy with the results! The team did the whole thing in one day and were super nice. Price was great. Highly recommend! read more

Adam B.

0

19

2

21 days ago

Great company They deliver the windows right on time very good price very professional teamwork. I really like Alex is awesome. I would recommend this company. read more

Arian M.

1

5

0

1 year ago

Great service. Installed 3 of my windows in my house perfectly. Communicated everything, prices were great. Would 1000% go again. And recommend read more

Israel G.

3

24

13

3 months ago

Windows and doors still in excellent condition Very happy with what they did. I am going to hire them for another house i own read more

Amir D.

0

3

0

20 days ago

Great experience! Professional team, clean installation, and the new windows look amazing. Highly recommend!

Windows4U - windowsinstallation - Updated August 2026

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