1. Winning Windows

    1. Winning Windows

    0

    Piedmont, CA

    Winning Windows

    4.3 (54 reviews)
    Closed 8:00 am - 5:00 pm

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    Kate R.

    Replaced windows decently, but converted some French doors to a window and they did a really terrible job with shoddy workmanship. Beware!

    Front window
    Alberto G.

    Excellent service! Honest and well run company that truly puts its customers first. We were referred to them by a neighbor. Installing windows is expensive and a huge investment but well worth it. It can be overwhelming finding the right company. Alex and his team made the process so smooth and easy. They went above and beyond and even did some extra work that we didn't expect. He was transparent about timelines and process. He didn't try to upsell and worked with us to find what we needed to replace all the windows in our single story 100 year old home. Absolute pleasure to work with. We highly recommend and would gladly work with them again. Also it's a family run business that is rooted in Oakland. 10/10!

    Bernardo with the level
    Melissa S.

    We love our new Marvin Ultimate windows, and we're very glad we went with Winning Windows. They're a small company that takes care of its customers and also has the best prices. We had a lot of choices (colors, wood, etc), and Carol, the owner, provided great advice. The installation process was a good experience. Bernardo Perez is a general contractor and has partnered with Winning Windows for decades. He's extremely knowledgeable and skillful. Our house is 85-years-old and set on a hill. There were challenges because our window openings aren't square, due to shifting. Bernardo and his crew took the time to do a careful, thorough job. It took us a couple years to figure out which windows we wanted; then manufacturing took a few more months. But thanks to Winning Windows it was all worth it.

    Before

    I love my new windows! Alex and Bernardo were quick, efficient and friendly when installing new windows in my home. Great price for even better quality! 10/10

    Huge new window
    Sol N.

    Fantastic service in the age of Covid. Replaced all my downstairs windows in one day and swapped out my front security gate with a beautiful and stylish new one. Very hygienic team using precautions and masks. The owner herself came out to inspect the project once finished. I loved the fact that I supported a female owned business. I am a very happy customer.

    House transformed with easy access to the back yard.

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    9 months ago

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    Alex P.

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    1 year ago

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    Alex P.

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    2 years ago

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    Alex P.

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    Photo of Kate R.
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    2 years ago

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    Alex P.

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    2 years ago

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    Alex P.

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    1 year ago

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    1 year ago

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    3 years ago

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    3 years ago

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    3 years ago

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    Alex P.

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    2 years ago

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    Alex P.

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    4 years ago

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    2 years ago

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    2 years ago

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    3 years ago

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    2 years ago

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    3 years ago

    Small business with great service. They answered all my questions and helped as needed. Outcome was just what I needed

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    6 years ago

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    Photo of Carol C.

    Carol C.

    Thank you! it was a pleasure working with you!

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    5 years ago

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    7 years ago

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    Carol C.

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    4 years ago

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    8 years ago

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    6 years ago

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    Carol C.

    Thanks, Ryan. I'm glad I could help you.

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    4 years ago

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    4 years ago

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    9 years ago

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    9 years ago

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    7 years ago

    I just called them and they are booked out until December and she said that the "normally" do anything less than six (6) windows... oh well

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    13 years ago

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    12 years ago

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    12 years ago

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    8 years ago

    Business owner information

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    Carol C.

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    9 years ago

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    7 years ago

    Called for a window replacement estimate and they told me how I could fix the problem without replacing the window. Thanks!

    Business owner information

    Photo of Carol C.

    Carol C.

    My pleasure, David. Good luck with your project.

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    11 years ago

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    9 years ago

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    Page 1 of 2

    Ask the Community - Winning Windows

    Is this place still in business? Google is saying permanently closed. I am mid-job (deposit paid) and not hearing back from Alex.

    We got in contact already, Sorry it's been a hassle dealing with Google to get this updated to not say we are permanently closed.

    Is there a number of window minimum for replacements?

    Hello, There is no minimum for window replacements.

    View All 4 Questions

    Review Highlights - Winning Windows

    Carol and Cody are not pushy at all so you'll need to push yourself to do this if you know it's the right thing to do.

    Mentioned in 23 reviews

    Read more highlights

    Cal Coast Window & Door

    Cal Coast Window & Door

    4.8
    (394 reviews)

    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.

    We wanted to replace all our original 1960s-era single-pane windows with double-pane windows. We…read morealso wanted a storm door for our front door. We got an estimate from Andersen (less the storm door). Their products and installation method were top-notch, but so was their estimated price! So we wanted something more economical. After some research we heard Milgard windows using an "retrofit" installation would be more in our price range. We also wanted a window/door-installation company that gave us a good price estimate (1/3 the cost of Andersen), was in our locale (Tri-Valley) , and had 5-star rating already. So we were happy to find Cal Coast that met those criteria. The initial estimate process was straightforward. Our estimator was friendly and efficient. The format of the estimate came in digital PDF format. It was easy to print, and the details and layout were very helpful with diagrams of what the windows and door would look like with dimensions. One measurement for one window was slightly off. I mentioned that to my estimator. He assured me that was not a problem because if I accepted their estimate, then the next step was for another technician would come out to the house to re-measure the windows more accurately and in more detail. We did accept the estimate, and indeed another technician came out to do detailed measurements. Then we received a revised and more detailed contract in that same great layout! The estimator kindly set our expectations that our windows and door were going to take 5-6 weeks to custom manufacture and about 1 to 2 days to install. Those timings were right on target, which helped us in planning other events in our life. Installation only took 1 day! The crew was great - courteous, hard working, and efficient. They put foam insulation in the space between our window frames and the new windows. The caulking work was professional. I was pleased. And the crew cleaned up after themselves perfectly. Another thing I was pleased with was Cal Coast's production manager helped me apply and get my city building permit for the new windows. The day of installation, the foreman handed me a nice folder with the printed permit with other instructions. I really appreciated that. Also after installation she worked with my city building department to schedule a final inspection by a city inspector. When the inspector came out, because the product and installation were superb, it passed with no problem. Of course, I paid a little more to have this permit processing service, but it was well worth it. Finally, as you can tell from this rather long review, I'm very pleased with our experience with Cal Coast and the Milgard products. I add my 5-star review to others that have gone before me for Cal Coast!

    BestOff Windows Inc

    BestOff Windows Inc

    4.8
    (276 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.

    Sergey and his team including Alex were amazing for the entire process. We hired them for 3 large…read moresliding doors and 6 windows and the entire process was so easy and affordable! Sergey came within a day of reaching out to him. He gave me the lowest quote out of 4 companies and he was very knowledgeable. Alex and his crew came to install everything and were done within a day. They were nice, professional and left everything very clean. You can tell they take pride in their work. Alex even took out time to listen to my kids magic tricks while working. Would highly recommend them!

    Winning Windows - windowsinstallation - Updated July 2026

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