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Find Addition to existing structure builders in Los Altos

Avatar for OT Bay Builders
OT Bay Builders
5.0(
109
)
Addition to Existing Structure - Build

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 rate100%
Recommended by68%of homeowners
Avatar for Herman Construction Company
Herman Construction Company
5.0(
22
)
Addition to Existing Structure - Build

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 Tool Time Home Improvement
Tool Time Home Improvement
4.6(
206
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Tool Time was absolutely fabulous. Extremely professional and thorough. From beginning until end, everything was outstanding. No detail was overlooked. This was a step down for my mother‘s home, she couldn’t be happier. It looks as though it was installed at the same time the other banister was. 100% GREAT JOB !!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time1 day
Response rate100%
11 neighbors recently requested a quote
Avatar for BE HOME REMODELING INC
BE HOME REMODELING INC
4.9(
67
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"It was a great pleasure working with Pouria and Juan. I hired them to help build a 400 sq. ft. deck, and they were able to finish it within a week at a very high quality. They were incredibly flexible with all of our requirements?don't hesitate to communicate with them if you need anything changed during construction! They are absolutely amazing and efficient. They even did some extra work around our house, which will really help us in the long run. Their pricing is very fair compared to many other groups, and I will definitely go to them the next time I need a project done!"
full house remodeling
full house remodeling
full house remodeling
full house remodeling
full house remodeling

+31

Response time1 day
Response rate99%
620 neighbors recently requested a quote
Avatar for Herman Construction Company
Herman Construction Company
5.0(
31
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Warranties offered

"Karol was a very professional and organized contractor. He was patient and listened to what I needed. He made sure to keep our house clean and protected during the construction. I refered him to a neighbor and my neighbor has given him many projects. I would hire Herman construction again for all my work."
Second floor House addition in progress. San Jose
second floor house addition before San Jose
Second floor house addition complete
second floor house addition in progress
3 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Skytech Builders
Skytech Builders
5.0(
21
)
Addition to Existing Structure - Build

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
Response rate100%
25 neighbors recently requested a quote
Avatar for Zacarias Remodeling Construction
Zacarias Remodeling Construction
5.0(
33
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

In business since 2009

Free estimates

Customers say: True professional

"Excellent crew. On time, very efficient, good quality work with attention to details, respectful of homeowner's time. Easy to communicate needs and changes to business owner who personally kept track of work in progress. Would not hesitate to hire again."
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
New kitchen, bedroom and bathroom
Remodeling - General Project

+50

18 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Arroyo Brothers Construction, LLC
Arroyo Brothers Construction, LLC
5.0(
10
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"These folks are conscientious, honest contractors. I have hired then for many years and I am never disappointed in the workmanship and quality. They always back their work and came back to fix something that they worked on. An added bonus is that they are just great people. I would highly recommend them and I am picky."
Los Gatos Remodel
Los Gatos remodel and addition
Los Gatos remodel and addition
Los Gatos remodel and addition
Santa Cruz Bathroom

+8

Response time12 hrs
Recommended by100%of homeowners
Avatar for On Design & Remodeling INC
On Design & Remodeling INC
5.0(
46
)
Addition to Existing Structure - Build

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

+421

Response time2 days
Response rate100%
45 neighbors recently requested a quote
Avatar for Clever Design and Remodeling, Inc.
Clever Design and Remodeling, Inc.
5.0(
22
)
Addition to Existing Structure - Build

Serving Los Altos, CA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"My kitchen has been utterly transformed, in the most wonderful way by the great staff and crew at Clever Design and Remodeling. Roy came to my home to give me an estimate, describe the whole process, and was very clear and concise in his explanations. He answered all my questions with great patience and was available throughout the installation process by phone or email in case I needed additional info. We also needed a double vanity in our bathroom which he custom built for us. When they were done with the vanity, painting, and the cabinets, we decided to get the same countertops that they guys used in the bathroom for our kitchen and redo the backsplash as well. They were all super easy to communicate with. All the guys that we worked with were very professional, and they cleaned up, so we could use the kitchen even with it torn apart. Overall, the final result is everything turned out gorgeous."
Kitchen
Kitchen
Master bathroom
Living Room
Kitchen

+270

Response time12 hrs
Response rate85%
13 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.