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Top-Rated Addition to existing structure builders in San Bruno - Updated Nov 2026

Avatar for OT Bay Builders
OT Bay Builders
4.9(
118
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Warranties offered

"Our basement went from a dark storage area to a cozy family room and home office. The remodel was smooth from start to finish. Great communication, thoughtful design ideas, and skilled workmanship throughout."
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 by63%of homeowners
Avatar for S&L REMODELING AND DESIGN INC
S&L REMODELING AND DESIGN INC
4.9(
47
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

"Where do I start! I am so happy I found a trustworthy and reliable contractor in Walnut Creek. Our house was basically a complete rebuild from a 1941 bungalow. We expanded the existing footprint by more than double and also added a detached garage. S&L was the absolute best! We bought the house in February but were not able to complete the drawings/permit process until a whopping 7 months later-- by which time a substantial amount of our resources were used up by paying rent + mortgage+ storage. The contractor we had planned to use could not fit us into his schedule so we were in a bind-- I found Jacob and contacted him immediately. Everyone he has on his team was courteous, responsible, and just very good at what they do. the craftsmanship that went into our house was much better than many of the new construction track homes we have seen. I only wish we found him sooner--since his business also does the architectural drawings-- we probably could have gotten into our house several months earlier. As I was very nervous about making changes to my home, the team at S&L Remodeling and Design made me feel comfortable and excited with the new renovations. The process was quicker than expected and I now have a beautiful kitchen and bathroom space!"
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom

+65

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for Masterful Construction, Inc.
Masterful Construction, Inc.
5.0(
28
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I had an excellent experience working with Masterful Construction for our building design project. Their team was professional, knowledgeable, and highly skilled. They took the time to understand our needs and delivered a design that exceeded our expectations. The communication throughout the process was great, and they were always responsive to our questions and concerns. I highly recommend their services for any building design needs."
master bathroom
san mateo master bath
mirror
Master bathroom
master bathroom

+66

Response time12 hrs
Response rate85%
3 neighbors recently requested a quote
Avatar for Bay Remodeling Kitchen & Bath
Bay Remodeling Kitchen & Bath
5.0(
69
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"To create my ideal kitchen, the staff at Bay Remodeling Kitchen & Bath went above and beyond. They listened to my thoughts, made useful recommendations, and transformed my kitchen into a lovely, hospitable area."
Palo Alto full Home Remodel
Full Bathroom Remodel Mountain Veiw, CA
Portola Valley, CA
Bathroom Remodel in Palo Alto, CA
Bathroom Remodel San Jose, CA

+183

15 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We found McCormick home builders through Angie’s list. They were not one of our original contacts, but they contacted us and came out to give us a quote. Matteo was extremely helpful, informative, honest, and gave us reasonable realistic prices, and did not try to inflate the prices or pressure us in anyway. We felt very comfortable with him immediately. We felt like he was a member of the family that we could just talk to and ask questions he was very personable. He gave us his contact number in case we had other questions and he was always available when we needed him for any type of questions or concerns. Mateo‘s team did a beautiful job. They were fast. They were efficient. They cleaned up beautifully. They did a wonderful job. They were very considerate of our time our needs and our neighbors. They were an absolute pleasure to work with. I would highly recommend Matteo from McCormick home builders for any home building projects, and we will be calling him again in the future!"
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.
.
.
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Axiom Renovation Inc.
Axiom Renovation Inc.
5.0(
10
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Our whole-home renovation included removing walls to create a more open floor plan. Victor kept the work moving efficiently and communicated progress regularly. The finished design feels brighter, more welcoming, and perfectly suited to our lifestyle."
Response time1 day
Response rate100%
21 neighbors recently requested a quote
Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
4.5(
58
)
Addition to Existing Structure - Build

Serving San Bruno, 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
Response rate100%
39 neighbors recently requested a quote
Avatar for Tech Line Construction, Inc.
Tech Line Construction, Inc.
4.9(
19
)
Addition to Existing Structure - Build

Serving San Bruno, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Techline Construction was excellent to work with. Lorena and the crew were very professional from the start. Whenever I had any questions they were there to clarify and quality work was excellent. I will definitely hire them for future projects."
Fremont
Fremont
Remodel
Beautiful Kitchen Remodel
Beautiful Kitchen Remodel

+28

Response time2 days
3 neighbors recently requested a quote
Recommended by61%of homeowners
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FAQs for addition to existing structure building service projects in San Bruno, 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 San Bruno, 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.