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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

"In both cases, we were incredibly pleased. We've worked with a lot contractors over the years and never worked with a company like Pristine. Consequently they are the only company we've worked with a second time. They are extremely professional. Their standards for quality workmanship are very high and they do what they say they'll do, when they say they'll do it. They have a strong network of suppliers and whether Nathan or Mike is leading your project, they make you feel like your project is their top priority. They have a lot of experience and offer great ideas for layouts and solutions when a problem needs to be solved. And they are great with communication. They keep you informed as to what's happening and they respond quickly if you have a question or want to talk about the work in progress. Our experience has been excellent and in both cases we have been very happy with the work. We will call them again and give them the highest of recommendations. You will not be disappointed if you work with Pristine."
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

"We recently re-did our Master Bathroom and wanted to do some of the work ourselves. So we sought out Bridgestone Construction and met with Jeremiah. He was so helpful in suggesting some possible layouts and making sure we got the perfect size and look for our design. In addition, even though we were doing the actual work, he suggested counter and color choices and kept in contact to make sure things were working out okay. As usual, the crystal cabinets came in exactly as expected and look great in the finished bathroom. Bridgestone Construction Inc and Jeremiah were awesome to do work with."
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

"Our initial meeting with Suj was great. Initially, we had in mind a much larger job. He had quoted us $3000 for the closet demolition / wall rebuild (non-load bearing), packaged with several other items. Together with the fee for drawings ($4000) and permits, this was a bit higher than we anticipated. However, we decided to go with Suj due to his responsiveness and professionalism. Out of our other quotes, Suj’s pricing was middle of the pack - not the cheapest or most expensive. When the drawings were complete and evaluated, he gave us an updated cost of $6000 over text message. The scope of work had changed, and this was no longer part of a bigger project - understandable. The issue was when he gave us the official estimate a week later and up’d the price once again to $9000. When asked what happened, his exact words were “well, I need to get paid too”. He had weeks to consider before quoting the $6000 and nothing had changed since then. The extra $3000 may be insignificant compared to most renovation costs, but for us in our first home, this was back breaking. We continued with Suj since we were already locked in and well past the 3 day cancellation period. Their work for the most part was exceptional. The new wall blended perfectly into our existing structure, and the ceiling patch was also well done. The problem here was the floor. They had dug up a 1” deep pit in the floor, likely to remove the wall studs. However, they did not patch the floor or even let us know this was going to be an issue. We were never told about the pit until I decided to check in on their progress one day towards the end of the wall build. This required us to pay a handyman to come in next day on a weekend to patch the concrete since we had cabinets being installed the following Tuesday. Suj was aware of this and did not believe it pertinent information. Overall, Suj and SoCal Builders do quality work, but the issues in pricing consistency lost us before the work even started. Not even telling us that we’d be left with a 1” deep pit in our floor after was another huge issue which should’ve been brought up much earlier. This was our first experience with a contractor and I’m not sure if this is typical or not. However, it’s enough to make me doubt I’d contact them for any future work."
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

"It went very well, thanks to Nathen and his workers. They cleaned up the trash everyday when they finished the work. The work was done in the time frame they gave me with no hold ups at any point. I already recommended to s friend of mine."
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

"Tulip Remodeling elevated my bathroom with flawless design and skillful materials selection. The additional contractor discount was a pleasant surprise, and the seamless communication ensured a stress-free and smooth process. I highly recommend them for anyone in search of superior renovation services!"
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.