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

Avatar for So Cal Builders & Design Inc
So Cal Builders & Design Inc
4.6(
311
)
Addition to Existing Structure - Build

Serving Harbor City, 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

35 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Creative Home Remodeling Group Inc.
Creative Home Remodeling Group Inc.
4.7(
257
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Warranties offered

"The team at Creative Home Remodeling Group did an amazing job building an ADU for my backyard. Kris was friendly, professional, and incredibly easy to work with. He made the entire process smooth and stress-free, from permitting to completion. Quality of the work was excellent, and we couldn't be happier with the result. We will definitely use them again. Highly recommend!"
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%
7 neighbors recently requested a quote
RET Construction Corp
5.0(
37
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"My wood balcony has termites and water damages. So I hired RET to do the job. Kevin gave estimates and recommended composite planks for floor and red woods for railings. His workmanship was very professional and finished on time! On top of that, Kevin updated my balcony to the latest building codes. His price is very reasonable. If you want cheap prices and lousy jobs,hire someone else! Highly recommended!"
Response time4 hrs
3 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
14
)
Addition to Existing Structure - Build

Serving Harbor City, 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

42 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 Harbor City, 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
The Home Remodeling Guys, Inc.
5.0(
32
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

At The Home Remodeling Guys, we are dedicated to transforming your living space into the home of your dreams. Specializing in kitchen and bathroom remodeling, as well as general and complete home renovations, we offer a wide range of services to enhance both the functionality and beauty of your home. With a team of experienced professionals, we take pride in delivering high-quality craftsmanship, attention to detail, and personalized solutions tailored to your unique style and needs. Whether you're looking to update a single room or undertake a full home transformation, The Home Remodeling Guys are here to bring your vision to life with expertise and care.

4 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Deco Construction
Deco Construction
4.7(
76
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"This is the third time I've hired Fred and Deco Construction. Fred is very easy to work with and frequently offers helpful suggestions for improvements. Deco updated my very dated 80's townhome. They practically touched every surface including a new kitchen, new floors, plaster and pain, all new doors, lighting, vanities. I could go on and on. The work once again was done on time and on budget. I would definitely would use Deco Construction again! Thanks Fred!"
Response time4 days
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Eagle View Remodeling
Eagle View Remodeling
4.7(
89
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1989

Free estimates

Emergency services offered

"I was a little nervous and excited when starting the process for my kitchen remodeling project. Luckily after several inquires to many companies, I found the right fit. Amir was very attentive and provided great communication through the process. He would visit my home and make sure everything was running accordingly. My kitchen now looks great and very detailed. I can’t wait to host my next gathering with friends and show off my new kitchen."
New Constraction
New Constraction
New Constraction
New Constraction
New Constraction

+145

Response time8 hrs
Response rate99%
63 neighbors recently requested a quote
Avatar for Home Renew 360
Home Renew 360
4.7(
78
)
Addition to Existing Structure - Build

Serving Harbor City, CA and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Warranties offered

"Had our roof replaced by the awesome team with Nathan behind the wheel. Very professional and no hidden costs, upgrades, etc. Very timely and up to standards. I cannot recommend them enough to anybody needing anything. In fact, we will be reaching out for future improvements on our small bungalow in LA. Also, be assured that they are not some "new to the game" company as there are a lot of them."
Roof in Huntington Beach
Asphalt Shingle Roof
Flat roof
Master Bathroom
Exterior Paint

+179

Response time8 hrs
Response rate100%
23 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Harbor City, 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 Harbor City, 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.