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

Avatar for HA My Design, Inc.
HA My Design, Inc.
5.0(
379
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Customers say: True professional

"I recently worked with HA My Design to build an ADU, and I could not be happier with the results. Golan and his crew were always on time and worked hard to ensure the project was completed within budget. The quality of their work was excellent, and they were quick and efficient. I highly recommend HA My Design for anyone looking to build an ADU. Their one-stop-shop showroom, covering 5000 square feet, made selecting finishes a breeze. I will definitely refer them to friends and family!"
After
Kitchen Remodel+Fireplace
Complete Home Renovation
Complete Kitchen Remodel
Complete Kitchen Remodel

+526

Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for Creative Home Remodeling Group Inc.
Creative Home Remodeling Group Inc.
4.7(
257
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Warranties offered

"My husband and I really enjoyed working with Ben and his team at Creative Home Remodeling Group. Ben oversaw everything from making the plans, getting them approved by the city, scheduling the entire build and doing all final inspections. We really appreciate how communicative Ben was with what day and a time window we could expect the different work groups to come and what work would be done those days. If my husband or I ever had questions or problems with anything that was going on during our construction we were encouraged to call Ben and he helped create a solution that was workable for all of us. We liked that Ben and his team took care of everything from beginning to end and we did not have to hire any additional contractors along the way. We did have to purchase the specific fixtures and tiling we wanted.) We added apx 200 sq feet to our home, which included a bathroom, walk-in closet and room extension. The total process took exactly 1 year from signing our contract to us being able to use our added rooms. (That included making the plans, getting them approved by the city, the build, the installation and final walkthrough with the city inspector.) I would recommend using Ben and his team at Creative Home Remodeling Group to my family and friends. We look forward to working with Ben again in the future."
Complete Kitchen with White and Blue Cabinets
Complete Kitchen Modern Kitchen With Botcher Island
posses of the kitchen remodeling
Modern ADU, large space with studio and 1 bathroom, big windows
White Kitchen Cabinets

+427

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for KN Remodeling & Supplies Inc
KN Remodeling & Supplies Inc
4.8(
63
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"We worked with Nathan to remodel our first house this year. As first-time renovators and first-time home owners, it was a daunting task. Nathan made us feel very well taken care of he has a strong attention to detail, and we felt we knew what we were getting throughout the project. We settled on a price up front for all of the labor, with the promise that even if things came up during the project, Nathan would take care of the complications without changing the price. He kept that guarantee. We ended up expanding our job to include other work, but all of the initial work was done at the promised price with no surprises. We are now living in our renovated house, and we love it. I couldn't imagine organizing such a huge project myself, and we're deeply grateful to have had someone as reliable as Nathan taking care of everything!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+48

Response time8 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for So Cal Builders & Design Inc
So Cal Builders & Design Inc
4.6(
308
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1982

Free estimates

Warranties offered

"After several long years of designing and permitting our home remodel during the pandemic, we were searching for a good contractor to build out our remodel and second story addition. Avi and David were wonderful; very thorough in explaining the process, answering all of our questions, and settling on a price that was reasonable and within our budget. During the building process, David was very responsive, available, and receptive to changes and last minute decisions made along the way. The project took longer than anticipated and there were some unexpected setbacks, but David and Avi worked quickly to fix issues and keep the project moving forward. At the end of the project they were very responsible about making sure we were satisfied with every last detail before completing the project. Our new home is beautiful and we're very happy with how it turned out, thanks to David and all the crews at So Cal Builders."
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

42 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
13
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"We recently had our kitchen remodeled, and the entire experience exceeded our expectations. From the initial consultation to the final installation, the team was professional, punctual, and paid incredible attention to every detail. They kept the work area clean, communicated with us throughout the project, and delivered exactly what they promised."
Bathroom Remodel
Master bathroom
Master bathroom
Master bedroom
Kitchen Remodel

+74

56 neighbors recently requested a quote
Avatar for Platinum Home Builders & Design, Inc.
Platinum Home Builders & Design, Inc.
5.0(
75
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Our entire kitchen had to be renovated, from floor to ceiling. The Platinum Home Builders staff visited us, listened to our needs, and presented us with options. Though it meant a reduced price, he gave us guidance about what would fit in our space. The responsiveness of Platinum Home Builders was one of the things that really set them apart. Eileen, our project manager, was fast to react to our questions. It makes a significant difference â we had not even felt that we were just another project; they treated us as if we were their only client."
DRIP EDGE FLASHINGS
SURE NAIL TECHNOLOGY SHINGLE BY OWEN'S CORNING
TITANIUM UDL 50 UNDERLAYMENT
INSTALLATION OF NEW COOL ROOF SHINGLES
SYNTHETIC ROOFING UNDERLAYMENT

+80

Response time11 hrs
Response rate93%
Recommended by88%of homeowners
Avatar for Trig Builders, Inc.
Trig Builders, Inc.
4.9(
37
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"Trig Builders is an excellent one-stop shop for mainly excellent design, great help in selecting final materials/accessories and mainly for any complete home remodeling. Our master bathroom and kitchen needed to be completely demolished and redesigned. Yossi met with us several times and by listening to us and to what we want to get, he was able to come up with a new concept that included all the ideas and goals of what we wanted to have and his design was very clean, modern while still be within our budget. Yossi also managed and handled all the orders and purchased of the materials and final accessories which caused us to write this review because this was an excellent service. The bathroom was gutted and after the demolition, Yossi and his guys discovered that the floor support beams were damaged so we had to replace them with new ones and to have the floor leveled before they could start the new construction. This problem caused the budget increased by a small cost (Yossi charged us only for the materials) for the overall budget. All the professional people that were involved in the work including the plumber, drywall man, electrician and tile man were excellent and skilled people that executed their part in a very high level of work results. They were very careful about all the cleaning aspect by dropping cloths, plastic wraps for the floors. The kitchen was completely redesigned and Yossi was able to include everything we wanted and needed. He went with us prior to the work and helped us purchasing all the materials appliances. The remodeling job was a week behind the original schedule because of the floor problem and due to few days when we had to leave the house for personal reasons on top of complications in getting the necessary inspections completed. We must mention here that any of the delays was not caused because of Trig Builders fault. We are very happy and satisfied with Yossi, the workers and all the skilled people and mainly Trig Builders as the company and we highly recommend them."
Addition in Diamond Bar
Addition in Diamond Bar
Addition in Diamond Bar
Addition in Diamond Bar
Addition in Diamond Bar

+15

Response time7 hrs
Recommended by87%of homeowners
Avatar for Green Planet Remodeling
Green Planet Remodeling
5.0(
73
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2013

Free estimates

Customers say: Quick response

"I hired Green Planet Remodeling for a room addition. I also received quotes from some other companies but offer from Green Planet Remodeling was most acceptable. The project went perfect, my project manager was very professional and informative, I always knew what was going on. They finished within promised time and was completely honest about everything else. The quality of their job is top notch. Thanks, will recommend to others!!"
Bathroom Remodeling
Bathroom Remodeling
Kitchen Remodeling
Kitchen Remodeling
Kitchen Remodeling

+35

Response time1 day
Response rate95%
Recommended by100%of homeowners
Avatar for Pinnacle Design and Build
Pinnacle Design and Build
5.0(
24
)
Addition to Existing Structure - Build

Serving Carson, CA and surrounding areas

Approved

In business since 2018

Free estimates

Hi there! \nAt Pinnacle Design and Build we have a holistic view of the process, and our mission is to guide you through its entirety: from design and planning, navigating permits and city authorities, securing funding, to delivering exceptional construction results. When you join Pinnacle, you have unlimited access to our team of in-house 3D designers, architects, engineers, project managers, financing department, and more. Did we mention our client portal that keeps YOU up to date on all the moving parts of your project! \nJust take a look at our Instagram: @pinnacle_dnb \n \nOver our many years in the industry, we?ve created a seamless system rooted in communication, listening, and expert guidance. We bring all of that to ensure every project will become your dream outcome or investment. We specialize in complete home remodels, ADU?s, additions, and large-scale landscape projects. We also love kitchen and bathroom remodels!

Kitchen Remodel
Kitchen Remodel
Kitchen Remodel
Kitchen Remodel
Kitchen Remodel

+55

13 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Carson, 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 Carson, 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.