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House Extension Professionals in Sunnyvale, CA

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Sunnyvale / 25 mi
Design & Build
House Extensions
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160 Professionals

Featured Reviews for House Extension Professionals in Sunnyvale, CA

LUX Construction
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars5 October 2016
“We were referred to Ori at LU construction by our family that hired them to remodel their kitchen a while back. Ori outlined the project steps for our kitchen remodel and presented a competitive quote for the job. The entire crew was professional, resourceful and efficient. During the entire remodeling, Ori was responsive and communicative to any of our concerns and he was always available to meet with us as needed. He demonstrated professionalism in executing any changes to the plan. Overall, we could not be happier with the new kitchen that he remodel for us. We lived at the house through the construction and it was honestly much better than we thought it would be. We trusted Ori and it was worth the trust. Many Thanks for all the hard work and to the people that did the actual work at our house! We've already recommended them to others looking for a dependable contractor who delivers quality work and timely execution.”
Lavan Construction | Design + Build
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars30 November 2018
“Lavan Construction has helped me with three projects over the last few years in some High end homes in Hillsborough California. They've been great with my budget and timeline. I would highly recommend Fahid and Moein and will reach out to them for my next project.”
Woodcliff Builders, Inc.
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars12 August 2014
“Joey was an awesome contractor. Always on time and very communicative! He and his sub-contractors were professional and very respective. They did an incredible job!!! Joey was always there making sure things were done correctly. I will definitely use him again.”
Century Bay Builders Inc.
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars23 April 2020
“We hired Century Bay Builders to remodel 3 bathrooms and a laundry room. I was impressed with them right off the bat - the office called to confirm my appointment for an estimate and our awesome project manager Ariel arrived on time and was very professional, thorough, detail-oriented, and had a good sense of humor (very important when doing any remodel!). He was very responsive to emails and texts and always reassuring when issues came up. His crew (Carlos, Fredy, and Marcos) were courteous, meticulous, and did beautiful work. We were especially amazed at how quickly and cleanly the demo went and appreciative that they kept the dust to a minimum since we were living in the house during the remodel. Everyone always checked with me regularly to make sure I was happy with everything. The finished bathrooms are magazine-worthy and we couldn't be happier. When I'm ready to do my next project I'll be happy to work with Ariel and Century Bay Builders again.”
Greenberg Construction
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars30 October 2014
“I was looking for a company to remodel my mom's property in alameda. I heard about this company from a friend and I decided to give it a shot . My mom is 75 years old and not able to communicate so I came to help her. Initially, we wanted to remodel our kitchen but decided to extend our kitchen and dinning room by breaking the wall that divided it. Maor the owner had a lot of layout options to choose from. He is very knowledgeable about design, and offered other possibilities. He also explain the different price between each option . We decided move forward with the build out and started the work on feb 14th. It took him 6 weeks to finish the project. My conclusion: He was almost every day supervise the different crews. Easy to communicate with. He is very pleasant person, he alway find a solution to any request we had. The crew was very professional and pass all inspection the first time . Every day they clean my house and moved their equipment on the side of the house . They didn't work on weekends for our request. He helped us choose all the fixtures from different supplier. Most of the guys speak English and very respectful to both my mom and I. The prices was fair for the quality of the job. The quality of his work is very high and the finish was super. Now we are thinking about doing the 2 bathroom and other area of the house. He will definitely be the contractor I choose . If anyone want to see picture feel free to email me and I will send him the pictures. Thank you very much for making this project a pleasant experience.”
California Construction Bay Area Inc.
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars16 July 2018
“We planned a big project at first, and then the budget changed, so our plans had to change. California Construction was understanding, responsive, and stayed on schedule for the revised remodel. Excellent work!”
Level Up Home Remodeling Inc
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars19 April 2017
“Our recent home project included the complete remodeling of the kitchen, 3 bathrooms and wet bar. My husband and I decided on Level up home remodeling following our due diligence process (having interviewed multiple contractor candidates) given the prior reviews, competitive proposal, and positive impressions following our discussions with Issac. Issac estimated 3 months to complete the project beginning in August 2016, and although there were the unknown but expected bumps in the road along the way during the project, was able to complete the job on a timely basis. Both quality of workmanship and timely completion of the job was important to us, and Issac and his team delivered on both counts. Those working on our project were hard working competent individuals, punctual, courteous and easy to engage in conversation. Issac was at our site on a daily basis both overseeing the project and hands on with regards to any task. He and his team provided professional, thoughtful and viable options and resolutions to each situation/issue as they arose. We have used other contractors in the past, but Level up home remodeling outperformed all the predecessors. We are pleased with the results and would not hesitate in bringing back Issac team for other construction projects going forward.”
Decor Builders
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars5 May 2020
“5 stars to Decor Builders! Thank you so much to Guy and Decor Builders for remodeling my bathroom, I was thinking to do my bathroom for a very long time but I was really nervous about the process and didn’t know any contractor I could trust. Guy made it all look very easy as he explained me every step and was very detailed and patience with me, He helped me choose all the materials and also help me with his contractor discounted prices. I love my new bathroom, if you looking to renovate your home Decor Builders is the right choice.”
Baron Construction and Remodeling
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars28 July 2014
“First they came and give us an estimate that we really liked, we signed the contract to do the kitchen floors. Before they started the job I ask them to give me a price for the complete kitchen remodeling. again we liked the price and we signed the contract (BTW they helped us with financing the job). during the process we found out the electrical wiring needs to be replaced mike gave us very good price on that so we let them do it. they also gave us 3D design rendering that was great, we actually could see how the kitchen will look like.. Roy Mike and the team where very helpful they answered all of our concerns and even when we change things around they where very understanding and helped us to make our dream come true. we where very impressed when all city inspection pass at the first time. we love how our kitchen came out, it looks amazing like it came out of a catalog, its like living in a mention. we will use Baron construction again to do our roof in the in the near future. they did exactly what they promise and above. we are extremely happy that we choose Baron construction and remodeling to do our kitchen.”
RMG Space Designs
House Extension Professionals in Sunnyvale, CA
Average rating: 5 out of 5 stars8 November 2020
“RMG Designs architected our house addition in San Jose. We found Richa from RMG Designs to be very professional and responsive. She accommodated our suggestion in the drawings.”
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Design and Build Company FAQs
A house extension is a construction process that involves expanding the footprint of your existing home. This could be extending outwards, either to the side or rear of the house, or upwards by adding another storey. House extensions provide extra living space and can significantly increase the value of your property.

House extensions can be categorised based on direction, structure and function. The main types include rear extensions, side return extensions, wrap-around extensions, and double or single-storey extensions. More specific ones could be kitchen extensions, loft conversions, basement conversions, garage conversions or conservatories. Select the type that best suits your property and meets your space needs, if you are unsure, speaking with a local home extension builder in Sunnyvale.

Generally, house extensions are worth the investment. They provide additional living space and can dramatically increase the resale value of your home, often covering the initial investment cost. However, plan carefully and choose a reputable house extension builder to ensure a high-quality build that will add value to your property.

The cost of a house extension can vary significantly based on several factors, such as the size, complexity of the design, quality of materials used, and geographical location. However, as a rough estimate, a single-storey extension can range from £1,000 to £2,000 per square metre, whereas a two-storey extension can start at around £1,500 per square metre.

Planning a house extension involves several stages, including idea generation, design, planning permission, and construction. Consult with a house extension architect to create a design based on your needs and budget. Ensure to check with your local council about planning permissions. Finally, choose a reputable house extension builder to bring your vision to life.
Why Hire Design & Build on Houzz?
160Local Pros on Houzz Who Serve Sunnyvale, CA
95,000+Total Number of Reviews Left by Homeowners
Are you considering a house extension? On Houzz, you can find an extensive selection of Sunnyvale house extension professionals near you, eager to turn your vision into a reality. Whether you're planning an extra bedroom, expanding your kitchen or designing a brand-new workspace, these professionals have the skills and expertise to make your project successful. House extension professionals include architects who can draw up detailed plans and builders who will execute them to the finest standards.

Choosing a house extension professional on Houzz ensures peace of mind, knowing that you’re in safe hands. They come highly recommended with a strong track record of creating bespoke, high-quality extensions in Sunnyvale in a wide range of styles and budgets. Whether planning a new kitchen extension, adding a new storey, or just wanting more living space, find your house extension solution with us.

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