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Top-Rated Addition to existing structure builders in Santa Monica - Updated Nov 2026

Avatar for Pristine Construction Inc
Pristine Construction Inc
4.9(
212
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Pristine Construction just completed a kitchen remodel for us this December. The project was finished on time even though additional projects were added along the way. Everybody from Pristine Construction did their job in the most professional and honest way possible. Through Angie’s List reviews, I came to know their reputation. And these reviews helped me to contact Pristine. The reviews were written in a way that I saw and experienced personally the good things about Pristine Construction. My wife and I were impressed from the start. Nathan and Mike listened to our needs and tried their very best to fulfill them. In my opinion, the crews and staff are the best in their field of expertise. Throughout the project, not only our 1950s-built house had kitchen upgrade, but also had other upgrades done. These other upgrades were done without sacrificing the timeline of the project. My family are all thrilled with the result of the project. I am proud and right in choosing Pristine Construction. I will choose them again on my next home improvement projects."
Additional Photos
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Additional Photos

+16

Response time7 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Bridgestone Construction Inc.
Bridgestone Construction Inc.
5.0(
60
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Picking Bridgestone Construction was the best decision I ever made! Jeremiah, the owner, came by and gave me an estimate for completely building me a new bathroom, started working exactly when they said they would, and charged me exactly what the quote was, not one penny more and got done on time! Jeremiah is extremely responsive, kind and understanding. All his workers are respectful and very nice. Jeremiah guided me through the entire process which made it comfortable and easy. I would recommend Bridgestone Construction to everyone. And for any job, the biggest or small. They were amazing."
Home Development
Bathroom Remodel
Kitchen Remodel
Residential Development
Residential Development

+2

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for So Cal Builders & Design Inc
So Cal Builders & Design Inc
4.6(
310
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1982

Free estimates

Warranties offered

"Ultimately the work performed was high quality. When there were small finish issues, the team came back and fixed everything to ensure continuity with our existing home design. The timeline overran a bit, but the workmanship was great"
Completely renovating both the guest and master bathrooms. In the master bathroom, we're installing a spacious walk-in shower featuring dual black-finished shower heads, elegant floating benches, and marble wall tiles. Meanwhile, the guest bathroom will have a sleek built-in tub and stylish hexagon tiles.
This project involved adding a new master bathroom to the existing house. The shower features sleek white subway tiles complemented by striking black fixtures and shower door hardware. The bathroom floor is adorned with elegant white marble tiles, providing a seamless and luxurious finish. A white shaker vanity topped with a white marble countertop completes the space, creating a clean and sophisticated look.
Experience a whole new level of indoor-outdoor living with the Torres Residence Backyard Remodel. This project highlights the addition of a kitchen sliding door, seamlessly merging your interior and exterior spaces
We remodeled the current kitchen, incorporating the addition of a new sliding door to establish a seamless indoor-outdoor living area
New pool with Baja bench and spa. New pavers, aluminum patio cover and built-in BBQ in the backyard

+563

40 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for America Green Builders
America Green Builders
4.9(
157
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"AGB was the perfect choice for our duplex apartment in the UWS full total gut renovation, we did not leave anything old in the apartment from flooring to full electrical changing the location of the kitchen and removal of the walls and ceiling all the way to studs expanding my master bath and more.Every part of the apartment needed to be redone. We hired AGB to fully design and build our apartment and it was just amazing experience they handled everything for us from building approvals to filing with the DOB and creating a beautiful design for our new apartment and they have everything you need for the renovation, great design team and very professional crew members and project managers it was a real pleasure working with a firm like America Green Builders thank you Osher, Mike, Sean and rest of the AGB team."
Kitchen Remodel Van Nuys
Bath Remodel Tujunga CA
Kitchen Remodel & Popcorn Ceiling Removal
Kitchen Renovation
Midcentury  Bathroom

+496

Response time5 hrs
Response rate92%
Recommended by97%of homeowners
Avatar for KN Remodeling & Supplies Inc
KN Remodeling & Supplies Inc
4.8(
63
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"The KN Remodeling team did an excellent job at our home completely remodeling 3 bathrooms, painting our entire home and rebuilding a huge planter outside. We trusted them in our home while we are out of town almost the entire time. We hired them back to do additional work in our home that they did quickly and expertly. The team was professional, very friendly, worked quickly, quietly, cleanly, and I would highly recommend them."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+48

Response time8 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for HIC Builders, Inc.
HIC Builders, Inc.
5.0(
12
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"HIC builders is a family owned company, and they did a terrific job at my house. We added an ADU above the garage, remodeled two bathrooms, and did other extensive work on the house. Abraham, the field manager, was responsive and available, flexible when plans needed to change to accommodate structural issues that we discover as the project progressed, and answered my endless questions. The workmen were always on time, courteous, and cleaned up the site every day before they left. Probably the easiest way to find out if HIC can provide what you want is to call Abraham Moryossef directly (818 850 5062) and chat. I know it will be a good investment of your time. They are terrific!"
Roof & exterior paint
Working on the gas line
Artificial turf project
Roof & exterior paint
Roof & exterior paint

+53

Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for DT Design and Build, Inc.
DT Design and Build, Inc.
4.7(
81
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Beauty. Integrity. Responsibility. These words describe DT design & build INC. Tal and his amazing crew ensures that the work done on your home is beautiful and of excellent quality. DT design & build INC delivers the promised work at the promised price, arrives and finishes on time, treats the customer and your property with respect, and is eager to please. In a time where the words "customer service" are almost a thing of the past; DT design & build INC gives hope that beauty, integrity, and responsibility still exist."
New house
New house
Bathroom
Livingroom
Bathroom

+43

Response time9 hrs
Response rate97%
Recommended by100%of homeowners
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
13
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"We hired Ben to remodel our living room and kitchen, which included adding approximately 300 square feet, creating an open floor plan, and removing an enormous brick fireplace in the center of our house. From day one, Ben was amazing to work with. He was on budget, on schedule, professional throughout the entire project, and consistently anticipated potential issues before they became problems. His wealth of experience was incredibly valuable when it came to making decisions along the way, and he was always willing to offer thoughtful advice and guidance. His entire team was fantastic as well: professional, respectful, and clearly committed to doing quality work. We couldn’t be happier with the results and our experience working with Ben. We highly recommend Ben for any remodeling, building, or construction project!"
Bathroom Remodel
Master bathroom
Master bathroom
Master bedroom
Kitchen Remodel

+74

52 neighbors recently requested a quote
Avatar for Tulip Remodeling, Inc.
Tulip Remodeling, Inc.
5.0(
43
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Absolutely thrilled with the home expansion carried out by Tulip Remodeling. I now have an ideal space to organize all the items that were crowding my living area. It feels like gaining an entirely new room, truly incredible."
Bathroom Remodel
Los Angeles Kitchen Remodel
Beverly Hills Bathroom Remodel
Los Angeles Kitchen Remodel
Beverly Hills Bathroom Remodel

+63

Response time4 hrs
Response rate100%
Recommended by94%of homeowners
Avatar for 52 Star Construction, Inc.
52 Star Construction, Inc.
5.0(
102
)
Addition to Existing Structure - Build

Serving Santa Monica, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We can not thank 52 Star Construction enough not only for their superb work, but for their project management, and for ensuring that a complete kitchen re-build was performed with as little disruption as possible to our household. Having had plenty of work done around the house over the years, I recognise and appreciate quality work, and 52 Star Construction provide that in abundance. They are also terrific people to deal with, and we have enjoyed meeting them."
ADU
Kitchen remodeling
ADU
ADU garage conversion
ADU

+3

Response time2 hrs
Response rate100%
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Santa Monica, 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 Santa Monica, 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.