Save Energy with Door and Window Replacement Services
Window Styles That Work for Your Space
Choosing the right style of window matters—both for function and appearance. Whether your property leans traditional, modern, or somewhere in between, there’s a window solution that fits.
We offer a wide range of window styles, including casement, double-hung, sliding, picture, bay, and specialty shapes. Our team helps you explore which types will provide the right ventilation, lighting, and visual balance for each room.
And if your goal is a quieter interior or more privacy, we can help you select glazing and frame materials that align with your priorities. Every project starts with a conversation, followed by a clear, customized plan that reflects your home or business’s needs.
Window Replacement That Boosts Curb Appeal
Home transformation with a window replacement that enhances both style and energy efficiency. By upgrading to modern, energy-efficient windows, you’ll see a dramatic difference in comfort, appearance, and savings. The before and after is not just about new windows—it’s about better insulation, improved curb appeal, and a more inviting atmosphere. Whether it’s increasing natural light or reducing energy costs, window replacement offers long-lasting benefits that make your home feel fresh and upgraded.
EXCELLENT Based on 178 reviews Nora S.October 21, 2025Verified We've worked with Uzi and the Ground Up Builders team on a number of projects in our home -- from gut renovations of two bathrooms to opening up walls in our kitchen, installing new lighting and electrical, mold remediation, and refinishing all the floors in the house. Oh! And when we had an emergency plumbing situation a week after moving in having nothing to do with his work, Uzi sent his team immediately to help. While Uzi is incredibly capable with major renovations, he approaches even the smallest jobs with the same level of care. Truly, no job is too big or too small for him. Uzi is smart, thoughtful, patient, and deeply experienced-- he's like a walking encyclopedia -- he has answers to everything! He's also an amazing communicator -- always available, always willing to explain every step. We're not the easiest clients (we're very particular and even more indecisive!), but Uzi never once made us feel rushed or like we were a burden. He always walked us through every option and every choice. His team of painters, tile installers, plumbers, handymen, and more -- are all so kind, skilled, professional, and respectful-- always putting on booties before entering and cleaning up after themselves when they finished. We always felt comfortable with the Ground Up team in our home. We appreciate Uzi more than we ever thought it was possible to appreciate a contractor. In short, we recommend him and Ground Up without hesitation. KC B.September 26, 2025Verified I had the privilege of working with Jacob and his team. He is incredibly dedicated and personally invested in his work. He truly listens, communicates with care, and pays attention to every detail. He and his team are meticulous, thoughtful, and hardworking, while also being very respectful of the home and space. They're not only trustworthy but also genuinely kind and caring--it felt like a real personal and collaborative relationship throughout the process. I highly recommend. Heather C.September 25, 2025Verified We needed to remove a bath/shower tile surround to re-waterproof and retile, and replace the fixtures. We went with GUB after getting their name from a tile vendor and meeting with more than one alternative. GUB were the most expensive by far but also were the most responsive and had the most professional and comprehensive bid. All of the legal paperwork and their license information was included, along with a detailed scope of work and examples of past work. Adi Aiish was our Field Manager. He's friendly and very responsive and our overall impression was that the additional cost would be worth it to have a professional job. To be succinct, here are the pros and cons from the project: Pros: - Responsive field manager - Very fast demolition and quick work overall - Crew was hard working and polite, especially Antonio - Tiling work looks good Cons: - When a piece of plumbing broke and flooded the ceiling below, the response was that things like this happen. It took 5 days for the field manager to take a look and offer an apology. - During demolition, the mess was off the charts bad, leading to a lot of cleanup for us afterwards. During the project only the floor was covered (and on one day not at all). I've had other renovations done that were much cleaner. - The finishing was not as polished as I would have hoped. The caulking around fixtures was messy, the tile tilted slightly revealing the old seam around the floor, painting that was in the bid was only one coat until I asked for more. I think the M.O. is to work very quickly and fine tune the finishes only after being asked. Overall we're happy with the result but would have liked them to go a little slower to be more careful. Kristy K.September 16, 2025Verified Ground Up Builders have been amazing to work with!! They are professional, offer great suggestions, and produce sold work. Jacob is amazing!! He truly cares about the work that is put into your home as if it's his own home. He treats you like family. For us, Jacob went above and beyond. We live in El Monte and the city is not easy to work with. They kept giving us problems with permits, etc. Jacob didn't just email them and wait around. He drove over in person time and again to resolve the issues and speed up the process for us. If you want something done in your home, you can trust the team at Ground up Builders! Aaron F.September 10, 2025Verified I had an excellent experience with Jacob Hirschorn and Ground UpBuilders! They came out to inspect a problem I was dealing with after I had already received a quote from a big-name company. Right away, I noticed how professional and detailed they were. They carefully assessed the situation, explained everything clearly, and recommended addressing the issue in two stages to make sure it was done right. Thanks to their honesty and thoroughness, I discovered that the big company's quote was not only overpriced but also wouldn't have fully solved the problem. Jacob & his crew saved our family a lot of money and gave me peace of mind knowing the job was done correctly. I highly recommend Jacob & Ground Up Builders if you're looking for a contractor who is professional, trustworthy, committed to doing quality work & a long lasting relationship. Barbara O.September 2, 2025Verified Jacob Hirschorn and Ground Up Builders did a high quality job on a residential apartment unit that needed mold remediation and tile abatement, followed by replacement of very old bathroom materials and fixtures with new of same. The finish product looks very professional. Jacob managed the field crew with Ground Up's long-standing pool of workers, including Manny and Cesar. Jacob did not over-promise anything and stayed on schedule. The office team was very helpful as well, including Mary Jane and Tish. It is best to determine ahead of time if you may need a THP with the City of LA and establish who will purchase materials. Thank you Ground Up Builders. You delivered. John F.August 26, 2025Verified We have now used Uzi and his team for three jobs: When a car crashed into a front bedroom, for a bedroom & den with flood damage, and a recent remodel including repairing hundred year old hardwood floors, windows, etc. He gets all 5 stars from us. He does what he says he will, and he does it on time. He has a fine crew that really came through for us. Absolutely 5 of 5 stars. Thanks for everything, Uzi!! Angelo D.August 19, 2025Verified I've worked with Ground Up Builders for many years, and Jacob has always been my go-to person. He is extremely knowledgeable, patient, and takes the time to share creative ideas--he recently spent a long time helping me plan my kitchen remodel. His estimates are fair, right in line with other general contractors, but what sets him apart is his honesty, integrity, and the value he brings to every project. Over the years, Jacob has replaced carpeting with LVT flooring (and even secured me a great discount with the flooring company) and corrected the poor work of a previous contractor on a decorative window. Every experience has been positive, and I truly trust his judgment and workmanship. Ground Up Builders is always the first company I call, and I highly recommend them to anyone looking for quality work and a contractor they can rely on. Hank C.August 18, 2025Verified Huge fan of Ground Up's work. Jacob and Uzi have guided us through planning and permitting for several residential projects with amazing know-how, attention to detail and professionalism. Certainly the most attentive and thorough contractors we've dealt with. And when we lost our home in the January 2025 Eaton Fire, they went above and beyond to help us navigate our insurance claim and to help prepare for our possible ground-up rebuild. Highly recommend them for any design or construction needs, big and small. Hector H.August 13, 2025Verified I purchased my first home with my dad last year and really wanted a pool in my small backyard. I was worried it wouldn't be possible just due to the huge dirt hill we had taking up half of the space. Adi Aiish at Ground Up Builders and Marcos Rojas took on this challenge and let me tell you, they absolutely did not disappoint. They took my plain backyard and turned it into an oasis, equipped with a heater for the pool AND the spa, as well as a built-in, natural-gas grill and countertop and tied it all together with a stunning planter and moody lighting that really brought the set up to life at night. I highly HIGHLY recommend these guys for anybody's future home upgrades and projects. Thank you so much for also getting this done quickly and safely!!
It All Starts with an Energy Audit
To begin with, we will send one of our window installers out to do an energy audit. This helps us determine whether there are any air leaks present and how bad they are. Then, we can determine what the best possible solution is to correct the problem for you. By swapping out your old windows and putting new model ones in, you could end up saving as much as 15 percent on your energy bill each month. Imagine what you could do with the added savings.
If window replacement cost is an issue, you also want to remember that you might not have to replace the entire door or window. It might be possible to simply retrofit or re-glaze them to help seal off any air leaks around the windows and doors. There are a whole host of different cost-effective solutions available to individuals today who are looking at door and window replacement services.
Some of our services include:
- Skylight additions
- New window installation
- New door installation
- And much more!
100% Financing Now Available
Ground Up is an approved contractor for a number of financing programs, many that the competition isn’t qualified to offer — meaning, we’re able to help you find the best rate in town.
Licensed, Bonded & Insured
This is important because the last thing you want is to get personally sued by a concrete installer working for a company that isn't insured who gets injured while working on your project.
Free Consultation
Get our expert opinion free of charge. Our experienced, licensed contractors are happy to meet in person to show you how our service can benefit you.
Family Owned & Operated
Ground Up Builders is family owned and operated, and our owners proudly work in the field, sharing their commitment to quality craftsmanship with the Southern California community.
Affordable, Quality Service
Our size allows us to efficiently service the greater Los Angeles, Orange and Ventura Counties, offering quality service and attention to detail at a competitive rate.
Customers Love Us
Our quality speaks for itself, and from Yelp to Angie’s List and everywhere in between, our customers know it.
Look Toward Different Lighting Solutions as Well
Lighting also plays a role in the amount of money you are going to spend on your monthly energy bill. Adding in skylights and energy-efficient windows can help improve the lighting in your home. When you don’t need as much lighting, you can save on the energy bill each month. Lighting changes can help minimize your lighting, cooling and heating costs.
You also want to make sure your home is aesthetically appealing. New door and window replacement services can do a lot for the overall curb appeal of your home. It will increase the value and make you proud to call the place your home.
schedule your consultation today.

