Get matched with top addition to existing structure builders in Los Altos, CA

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."

"Refinished hardwood floors in 1950s-era home. Scheduling was easy, instructions were clear. Work was done faster than expected. A few damaged floor boards were replaced; I can't tell now where they were. Very satisfied with results. Quoted price seemed reasonable; never went for other bids, so can't comment on cost."

"I wanted to share my fantastic experience with ON Design & Remodeling during my recent bathroom remodeling project. The results are amazing, and I'm so grateful to Raz and Sofia. The bathroom now feels like a high-end spa, The tiles, fixtures, and overall design are top quality. Can't wait for future projects with ON Design & Remodeling! "

"Be home remodeling were very professional, very knowledgeable, very patient and take great care of me, definitely recommend them"

" Zacarias Remodeling Construction did an amazing job on my brand new kitchen! I wanted my kitchen to be done before Christmas and they worked above and beyond to complete it! Oscar (the Owner) would come to see how the project was progressing and inspect the finished work and made sure if we had any concerns or questions. The workers are professional and hard workers!! They also made sure everything was clean before leaving for the day. Suzanne (Estimator/Designer) was there 100% of the time for questions, advice and opinion on the design. Awesome to work with! I am very happy with my kitchen and highly recommend them!"

"Replacing our old windows made a huge difference in both comfort and appearance. The team made the process simple, and the new windows look sleek and help keep the house cooler."

"The bathroom remodel went well. The completed work was beautiful and completed on time. Especially great job on the tile work. Would definitely hire again"

"Delighted with my new roof! From consultation to installation, the process was smooth. The team was professional and efficient, delivering both aesthetics and durability. Highly recommend for quality roofing."

"Tony said the job would be 30 days and it was. He was really easy to work with and it was a pleasure doing business with him."

"We recently had the chance to work with Quartz construction ( owner: Ohad) on our construction project for bathroom remodeling and we couldn’t be more pleased with the results. From start to finish, their team demonstrated professionalism, transparency. They maintained clear communication throughout the project, kept us informed of progress and any potential changes, and delivered everything on time and within budget. The quality of the workmanship is outstanding — every detail was handled with care and precision. What stood out most was their commitment to customer satisfaction. They were responsive to our questions, respectful of our space, and ensured that the final outcome matched our vision perfectly. If you're looking for a reliable, skilled, and trustworthy construction contractor, I wholeheartedly recommend Quartz Construction, Ohad and his team. AJ "