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Find Addition to existing structure builders in San Francisco

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

Serving San Francisco, 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 BE HOME REMODELING INC
BE HOME REMODELING INC
4.9(
67
)
Addition to Existing Structure - Build

Serving San Francisco, 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%
638 neighbors recently requested a quote
Avatar for BUILDERS GROUP & DESIGN INC
BUILDERS GROUP & DESIGN INC
5.0(
16
)
Addition to Existing Structure - Build

Serving San Francisco, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Building Excellence. Creating Lasting Value.\nBuilders Group & Design Inc. is a licensed, full-service construction company specializing in residential and commercial remodeling, new construction, ADUs, additions, kitchens, bathrooms, landscaping, and complete property renovations.\nWe are committed to delivering exceptional craftsmanship, transparent communication, and reliable project management—bringing every client’s vision to life with quality, integrity, and attention to detail.\nYour Vision. Our Expertise. Built to Last.

Beautiful kitchen
Kitchen Remodel
Open-concept Kitchen
Inside and lighting
Exterior view

+27

3 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 Francisco, CA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties 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."
20 neighbors recently requested a quote
Recommended by61%of homeowners
Avatar for Rose Remodeling & Design Inc.
Rose Remodeling & Design Inc.
4.8(
95
)
Addition to Existing Structure - Build

Serving San Francisco, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Adir and his team exceeded all expectations with our ADU project. They helped us refine our design, handled permits efficiently, and executed the work beautifully. Every part of the build shows quality and care. What I appreciated most was their communication. They kept us informed the entire time. It?s rare to find a company this reliable."
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM
PHOTO ALBUM

+128

Response time6 hrs
Response rate95%
15 neighbors recently requested a quote
Avatar for Ceres Construction
Ceres Construction
5.0(
10
)
Addition to Existing Structure - Build

Serving San Francisco, CA and surrounding areas

Approved

Free estimates

Warranties offered

Customers say: True professional

"I highly recommend hiring Adrian Kovaci and his crew at Ceres Construction for your home construction project.The quality of their work was superb, the cost was comparible to the three other quotes I got from other companies, and their work presence at my home was unobtrusive as I could hope for. My two level 1923-built Richmond district home in San Francisco had a derelict passage to my garage - crumbling door, wobbly side stairs, and dry-rotted siding. Nothing was up to code. Adrian noted all the items that had to be reconstructed and said the project would take up to 20 days (it actually was finished in 18 days.) Adrian was very accommodating in giving extra finishing touches to my door hallway without extra charges, which I appreciated. I was concerned about the cost of the project and the disruption the work would cause, but Adrian's calm demeanor and the friendliness of the crew put my worries to rest. Thank you Adrian for leaving the work area spotless and for the quality work!"
Structural beam and layout modification
Remodeling - General Project
building new partition wall
Remodeling - General Project
Kitchen remodeling

+22

Recommended by60%of homeowners
Avatar for Prosper Construction Development, Inc.
Prosper Construction Development, Inc.
4.4(
52
)
Addition to Existing Structure - Build

Serving San Francisco, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"We hired David and Prosper to do a gut renovation of our home in Portero Hill. We decided to hire them after interviewing six different contractors. From the initial phone call I had with Prosper Construction Development I knew these guys were different. He was the only contractor to ask that I forward the blueprints we had so that he could come to the meeting prepared. Our project ended up being more difficult than we originally had thought. Some walls we wanted to remove were structural and almost every wall had plumbing. Prosper Construction and their entire team handled each surprise like seasoned pros and these challenges did not stop their team from delivering the home we had envisioned. The scope of work included: gut kitchen renovation, 2 gut bathrooms, tiling, wood floors, painting throughout, removal of structural walls, addition of steel panel. Our renovation was completed over a month ago. I would not hesitate recommending them. At the end of the day they are really great people with a terrific team."
modern railing
after staining the new stairs #2
modern kitchen design
convert traditional bathroom into modern bathroom
modern bathroom

+134

Response time6 days
Recommended by97%of homeowners
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FAQs for addition to existing structure building service projects in San Francisco, 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 Francisco, 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.