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Find Addition to existing structure builders in Los Altos

Avatar for OT Bay Builders
OT Bay Builders
5.0(
77
)

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"We hired OT Bay Builders to remodel our kitchen, and the transformation is beyond what we imagined! Their design team worked closely with us to bring our vision to life, suggesting great ideas while keeping our budget in mind. The craftsmanship is top-notch, and every detail—from the cabinets to the countertops—was executed perfectly. The team was professional, communicative, and always cleaned up after themselves. If you're considering a home remodel, look no further than OT Bay Builders!"
Broadway Kitchen Remodel
Broadway Full Kitchen remodel
Broadway Full Kitchen remodel
San Francisco Contemporary Kitchen Remodel
San Francisco Contemporary Kitchen Remodel

+81

Response time12 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for Herman Construction Company
Herman Construction Company
5.0(
22
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Karol and his crew are very talented, efficient builders. We hired Karol to build a composite deck to compliment the pool we had installed in the back yard. It turned out beautifully. He is a great communicator and listener, prompt and reliable."
Home Addition
Home Addition
Home Additon
Home Additon
Home Addition

+25

Response time7 hrs
Recommended by81%of homeowners
Avatar for On Design & Remodeling INC
On Design & Remodeling INC
5.0(
38
)

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"I recently had the pleasure of working with ON design for a significant addition and removal project at my home. From start to finish, their professionalism and attention to detail were impeccable. They communicated clearly throughout the process, ensuring I was always up to date with the progress. The quality of their work was exceptional, and they completed the project on time and within budget. I couldn't be happier with the transformation they brought to my home. Highly recommend their services!"
The Willow Oaks project
First floor kitchen and stairs
Master Bathroom remodeling
Open concept Kitchen
The Willow Oaks project

+399

Response time2 days
Response rate94%
40 neighbors recently requested a quote
Avatar for Zacarias Remodeling Construction
Zacarias Remodeling Construction
5.0(
32
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 2009

Free estimates

Customers say: Quick response

"Zacarias Remodeling Construction is AMAZING! Oscar and his crew recently did a complete kitchen/ family room renovation for us and it was such a wonderful experience. Oscar and his team are incredibly professional and "can do". We were living at our vacation house during the renovation and trusted them to make decisions and keep us in the loop with calls, texts, and photos. They were always so responsive and did beautiful work. We had several unexpected structural issues arise that were due to previous work that another contractor had done at our house, and they found creative and cost effective ways to correct the problems. They are also just such lovely people--so kind and accommodating, always trying to make the client happy. And they kept the job site very clean and tidy. We trusted them completely to keep our home safe while we were living remotely. We cannot recommend them highly enough for any sized job. Their workmanship is phenomenal and our kitchen/family room turned out gorgeous!"
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
New kitchen, bedroom and bathroom
Remodeling - General Project

+50

28 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for BE HOME REMODELING INC
BE HOME REMODELING INC
5.0(
14
)

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"We recently had our bathroom remodeled by Be Home Remodeling, and I just wanted to share how happy we are with everything. Pouria, our project manager, was great — super organized, always kept us updated, and really listened to any concerns we had. Any time we needed something or had a question, he handled it right away. The crew (Manuel, Isaí )did an awesome job. They worked cleanly, were respectful of our home, and the quality of the work shows. The bathroom turned out even better than we expected, and we honestly love how everything came out. Overall, it was a really smooth experience, and we’d definitely recommend Be Home Remodeling and Pouria if you’re planning a remodel."
full house remodeling
full house remodeling
full house remodeling
full house remodeling
full house remodeling

+31

Response time1 day
Response rate98%
626 neighbors recently requested a quote
Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
5.0(
48
)

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Warranties offered

"Sol was the Unique Home Design & Remodeling project manager for the recent kitchen and bathroom renovation that we recently did and his team of skilled and hardworking did a wonderful job. We greatly recommend Unique Home Design & Remodeling and mainly Sol, The working crew and the office staff that was involved in our project and we will hire them again for any additional remodeling project in our house. Sol was the project manager on both remodeling projects (kitchen and bathroom), did a perfect designing job for the kitchen space by using most of the existing space with features that we needed and wanted for a while now. From start to end, the extra attention that Sol put to all the details of both projects was more than what we were looking for. He always gave wonderful ideas and suggestions and he made sure that we are happy with all the decisions about both renovations. We love both projects very much! The kitchen and the bathroom got a completely brand new look and they are very functional for our needs. It makes us very happy each time any of us walk into any of them!"
M
Response time1 day
Response rate96%
143 neighbors recently requested a quote
Avatar for Quartz Construction
Quartz Construction
4.8(
65
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Everything I expected from Quartz building our deck.So honest,they did everything that was promised.Finished in a timely manner and kept it clean.They used high quality material.I will recommend Quartz to my family and friends.Love my beautiful deck. The Salsedo's"
bathroom
bathroomremodel
stairs
stairs
wood deck

+252

Response time2 days
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
5.0(
48
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 1983

Free estimates

Warranties offered

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team. Unique Home Design & Remodeling's mission is to accomplish full customer satisfaction in every area possible from color selection to project completion. Unique Home Design & Remodeling's main focus is to provide our future clients with a professional home improvement experience. We vow to our customers with the highest level of quality construction services at fair market and competitive prices. To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes.

Response time2 days
34 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Skytech Builders
Skytech Builders
5.0(
21
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"After I contacted several contractors on a room addition I decided to go with Sky Tech Builders and I can tell that it was a really easy decision because they gave me great offer and they completely understood what I wanted to do. They were also available on acceptable time and project started soon after we signed a contract. The project manager and his crew were professional, honest, helpful and very respectful to me and my home. They finished project within time they promised and within my budget. And final outcome is excellent, I am fully satisfied with everything they did and would definitely work with Sky Tech Builders again!"
Master Bathroom Remodel in San Jose.
Kitchen Remodel in San Mateo
Kitchen remodeling in Fremont
Master Bathroom Remodel in San Jose.
Kitchen Remodel in San Mateo

+63

Response time1 day
31 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for All Weather Construction Inc.
All Weather Construction Inc.
5.0(
19
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"We did a full house remodel with Long and his team at All Weather Construction, and I couldn?t be happier. They are hardworking, honest, and completed everything on time. Long was patient and always available to answer my questions. He even pointed out flaws in the original architect plans and suggested thoughtful improvements that made a big difference. I really appreciated that he never tried to add extra costs or amendments once the contract was set. His crew cleaned up every day and took real pride in their work. I?ll definitely go to Long and his team for any future remodels and would wholeheartedly recommend them to anyone."
Modern Home Saratoga CA
Modern Home Saratoga CA
Modern Home Saratoga CA
Modern Home Saratoga CA
Modern Home Saratoga CA

+19

Response time5 hrs
Response rate100%
1 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Los Altos, CA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Los Altos, CA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.