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

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

Serving North Hills, CA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"If I could give this company a 10, I would! I am a retired interior designer who has worked with many contractors. None have been as competent, professional, and considerate as Pristine Construction. Pristine was not the lowest bid, but I hired them because I knew I could work with them and liked the suggestions that Nathan suggested for the plans that I designed. It is hard to live with a team of strangers for several months and the overall construction itself is stressful because you have to empty the rooms and still try to have an organized life. But Pristine worked to make the disruption as minimal as possible. The workers arrived early, worked diligently, and cleaned thoroughly at the end of each day. They even worked the day after Thanksgiving. Love the result!"
Additional Photos
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Additional Photos

+16

Response time7 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for HA My Design, Inc.
HA My Design, Inc.
5.0(
379
)
Addition to Existing Structure - Build

Serving North Hills, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Customers say: True professional

"We absolutely love our new home. We had our kitchen remodeled, our hallway, which is now our beautiful laundry area, our two bathrooms, new flooring installed in those areas, recessed lighting, new central air and heat, the electrical upgraded, new plumbing in areas that needed it, the exterior and interior painted, and our structure retrofitted. Even though we didnâ t add square footage the inside of our home is unrecognizable. Everyone that comes to our home canâ t believe the changes, and how beautiful it came out. We love it! We met with at least four other contractors before deciding to go with H&A My Design. Ben, the Project Manager, immediately made us feel comfortable, and made a great impression with us. He was with us from the get go and through to completion. Meshi was added to our project shortly after we started. So there were now two Project Managers. Meshi was an excellent and pleasant addition. Meshi and Ben were on top of everything. Between her and Ben nothing went unanswered. Every good relationship does have some stumbles, how they are resolved determines everything. Whenever we had questions or concerns during the project we immediately received a text, a phone call, or Ben or Meshi would drop by. They were hands on, and never difficult to reach. They both immediately addressed any issues we had. When the project was complete Ben and Meshi even brought our fur babies fun gifts and tasty snacks, along with a gift for us. About three months later, we noticed some issues. We contacted Meshi and Ben via text and sent pictures. She immediately sent someone out and the job was complete within 24hrs. The project took about three months to complete. Overall, we had a great experience, and we are very happy with the outcome, the professionalism, and the time frame. We would use, and highly recommend, H&A My Design for future projects, and Ben and Meshi as our Project Managers. Thank you Ben and Meshi and H&A My Design! We couldnâ t be happier."
After
Kitchen Remodel+Fireplace
Complete Home Renovation
Complete Kitchen Remodel
Complete Kitchen Remodel

+526

Response time1 day
Response rate100%
Recommended by92%of homeowners
Avatar for KN Remodeling & Supplies Inc
KN Remodeling & Supplies Inc
4.8(
63
)
Addition to Existing Structure - Build

Serving North Hills, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"We interviewed many contractors for this job. In the end, it boiled down to the good rapport with Nathan. On the plus side, his work is beautiful and his workers always showed up as promised. He never quibbled about some concerns we had throughout. But, we were up sold some work, (which we likely needed anyway) but were under the gun to make a decision and had to haggle under those conditions. Also, he sometimes requires multiple messages to get a response. Overall, very, very pleased with results and recommend to anyone."
Additional Photos
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Additional Photos

+48

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

Serving North Hills, 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%
6 neighbors recently requested a quote
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
14
)
Addition to Existing Structure - Build

Serving North Hills, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Ben helped us convert our VERY old garage (80+ years) into a modern multipurpose room. He was communicative throughout the process, friendly to work with, and the final product exceeded our expectations. We highly recommend YB Builders to anyone looking for a contractor."
Bathroom Remodel
Master bathroom
Master bathroom
Master bedroom
Kitchen Remodel

+74

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

Serving North Hills, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"I would like to extend my heartfelt thanks to Oran and the Tulip Remodeling team for their beautiful work on my home extension project. Their expertise and professionalism made the entire process easy, from concept to completion. I highly recommend Tulip Remodeling for their quality construction and excellent customer service."
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 Platinum Home Builders & Design, Inc.
Platinum Home Builders & Design, Inc.
5.0(
75
)
Addition to Existing Structure - Build

Serving North Hills, CA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"I came to know about Platinum Home Builders from a friend. We were having our first child and wanted to have a specially prepared room for her. I was very impressed with their approach. I should say that I am very satisfied with their work."
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 California Construction Center, Inc.
California Construction Center, Inc.
4.8(
128
)
Addition to Existing Structure - Build

Serving North Hills, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"I hired California Construction Center to build an addition and although it was a big project it went smooth and they made it pretty simple. It went like that because they were well organized, professional and responsible. They kept costs within my budget, very honest people. The outcome is great, excellent quality of work and I will work with this company again, I guarantee!"
Before & After
Kitchen Remodeling
Before & After
Before & After
Before & After

+141

Response time8 hrs
Response rate86%
Recommended by98%of homeowners
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FAQs for addition to existing structure building service projects in North Hills, 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 North Hills, 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.