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

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

Serving Tarzana, CA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"The remodeling of my guest bath went very smoothly. I had few ideas as to what I wanted, but thanks to Nathan's design help, I was able to select the items that fit my concept. Many reviews talk mainly about the job and the results, but there is one important area that is often neglected: the working crew. Without exception his guys, besides being highly competent, were both respectful and considerate at all times. I strongly recommend this company!"
Additional Photos
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Additional Photos

+16

Response time7 hrs
5 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 Tarzana, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"We had converted our half bath into a full bathroom. Bridgestone construction offered accurate timelines, competitive pricing and committed people to complete the work. They also handled all the paperwork and permitting and followed up with our local inspectors so that the work could be completed on time. They were extremely clear at all the milestones and payments were structured after the work was completed. Their people kept to covid protocols (taking temperatures everyday, masks all the time, daily record of everyone who was working), and worked with very high quality. Jeremiah was a pleasure to work with, He did a great job of minimizing disturbances to us. They were great at adapting to all the various issues that came up to ensure the job was completed on time with high quality."
Home Development
Bathroom Remodel
Kitchen Remodel
Residential Development
Residential Development

+2

Response time2 days
Response rate100%
3 neighbors recently requested a quote
Avatar for HA My Design, Inc.
HA My Design, Inc.
5.0(
379
)
Addition to Existing Structure - Build

Serving Tarzana, 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%
3 neighbors recently requested a quote
Avatar for America Green Builders
America Green Builders
4.9(
157
)
Addition to Existing Structure - Build

Serving Tarzana, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"America Green Builders helped us renovate our new house. Moshe and Mike helped us assess what they could do to improve the house and put our own personal touches on it. Our projects included removing the floors on the first floor, re-leveling the subfloor and installing new flooring (including removing and reinstalling the kitchen cabinets) building out the basement with a separate laundry and closet area and entertainment center; building a mudroom off the front door; finishing the garage and installing insulation and HVAC, electrical upgrades, and installing new decking on the terrace. Throughout it all, Moshe and Mike were professional and dependable. They worked hard to meet our timing goals and were easy to communicate with, and best of all were trustworthy partners with us. Highly recommend AGB."
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 Tarzana, 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
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+48

Response time8 hrs
Response rate100%
5 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 Tarzana, 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 Tarzana, 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 Tarzana, CA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Tal and his team at DT Design & Build did an amazing job on our home addition project. From the initial consultation to the final walk-through, they were professional, communicative, and focused on delivering exceptional results. Tal;s expertise in design and construction ensured that our new space seamlessly integrated with our existing home, and his team attention to detail was unmatched. We are thrilled with the outcome and would not hesitate to recommend DT Design & Build to others."
New house
New house
Bathroom
Livingroom
Bathroom

+43

Response time9 hrs
Response rate97%
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Tarzana, 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 Tarzana, 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.