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Find Addition to existing structure builders in Altadena

Avatar for So Cal Builders & Design Inc
So Cal Builders & Design Inc
4.6(
304
)
Addition to Existing Structure - Build

Serving Altadena, 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

38 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for KN Remodeling & Supplies Inc
KN Remodeling & Supplies Inc
4.8(
63
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Nathan and his crew started almost immediately and finished on schedule. They were responsive and approachable and ready to tackle any problems that arose during the project. Always nerve wracking to deal with contractors but KN remodeling made it easy and performed as expected. The tile work was excellent, the demo was quick, and the cabinets were gorgeous. The entire crew were very professional and courteous."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+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 Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Warranties offered

"We've been in our Lakewood home over 27 years and finally made the decision to put our "60's kitchen out to pasture. We had three good contractors bid for this project. We were most impressed by Ben of Creative Home Remodeling Group. His enthusiasm, attention to detail and follow-thru remained constant from concept to completion. Ben overperformed and under promised. His crew of company contractor specialists have been with him for years, and their rapport and communication showed in the finished project. He was on site and/or in phone contact with them and us constantly. They finished ahead of time with Ben staying on task through each stage and to final inspection. No reflection on Ben or his company, but us being a first- time user of a contractor's services, we were a little green about the process, the quotation and what to expect. It is often said to add 20% to the bid for unexpected costs. There were two legitimate additions that couldn't be anticipated. They were fully explained and understood. It is important for anyone doing this, to make good notes and keep in mind what the bidder is contracting to provide and what your responsibilities will be. Ben made this clear from the start-nothing hidden. Many items required us to go to the vendor, choose, and to pay directly, outside the bid parameters. These items-specifically: the vinyl flooring, the quartz counter tops and backsplash, sink, faucet and disposal being the main ones. For the most part, only the highest expense (the cabinets) was factored into the quotation. My wife and I would use Ben and Creative Remodel again and recommend him and his Studio City company without reservation"
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%
12 neighbors recently requested a quote
Avatar for Axe Construction
Axe Construction
5.0(
57
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"We had a great experience building with Axe Construction! Whenever we had questions or wanted to change anything they responded immediately. Our house turned out absolutely amazing! The building process went so fast. Thank you for our wonderful home, can't wait to build again!"
7135 Hollywood BLVD
7135 Hollywood BLVD
Kitchen - Breakfast Nook
Griffin
Stairway

+394

Response time1 day
Response rate86%
3 neighbors recently requested a quote
Avatar for Construction Masters
Construction Masters
4.7(
316
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"I needed a new house built on a complex foundation. Construction Masters did an amazing job from start to finish. Mickey and Moshe listened to everything I was looking for and worked with my vision to turn it into a reality. Their attention to sight lines and details are excellent. Mickey took me through all the work of choosing lights, cabinets, fixtures, etc. The two of them work so well together! Mickey and Moshe were there every day of the week to provide oversight on the project. The philosophy of the company is one of excellence and honesty. I do not know this because it is on a website or brochure; I know it because I had the pleasure of being their client. If they create anything, from a stair banister to a luxury bath or a whole house, it will be done to the highest standards. The work they did building the whole house was so superb that when they finished, I asked to be their client again without considering any other builders. I am going to build an ADU on the other side of my property and it will be built by Construction Masters."
Our Assorted Work
Our Assorted Work
Our Assorted Work
Our Assorted Work
Our Assorted Work

+51

Response time8 hrs
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
13
)
Addition to Existing Structure - Build

Serving Altadena, 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

64 neighbors recently requested a quote
Avatar for HA My Design, Inc.
HA My Design, Inc.
5.0(
378
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Customers say: True professional

"I hired Golan and H&A My Design to build an addition to my house. Golan was very professional, helpful, communicative and honest. He listened to my suggestions and gave me some great advices. The project was finished ahead of schedule and I am completely satisfied with the outcome. Highly recommend Golan and H&A My Design!"
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 MF Construction & Design Inc
MF Construction & Design Inc
4.5(
82
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"We used Mike and MF Construction a couple of years ago to remodel our kitchen. Everything went smoothly then, and we still love our kitchen, so when it came time to convert our garage into an office we called Mike. We are just as happy this time. Mike listened to our plans and made suggestions. He asked good questions to make sure we were going to get what we wanted. The main workers on our job, Luis and Jose, were great. They are very experienced and were easy to talk to and ask questions. Mike would come by just about every day, and and check on the progress, and fill us in on what to expect."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+30

Response time2 days
3 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Platinum Home Builders & Design, Inc.
Platinum Home Builders & Design, Inc.
5.0(
75
)
Addition to Existing Structure - Build

Serving Altadena, CA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"I recently used Platinum Builders for a new home addition and had a very positive experience. As an engineer with extensive experience building and renovating homes, I originally planned to manage the project myself and subcontract each phase. However, with frequent work and travel, I realized I needed a turnkey solution. Devon, my project manager, was professional, honest, responsive, and worked around my schedule. Although two other quotes were substantially lower, I chose Platinum because of my confidence in their team. The footing and framing crews were excellent. When quality issues arose during finishing, Devon quickly addressed them. I would definitely choose Platinum Builders again."
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 Altadena, CA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"We needed to do a kitchen remodel for a while now so we did a massive research online and by asking friends and family in our area. After meeting with all of them and explaining to them what are we looking for, what we want to do and mainly what is our budget. We received estimates from all the contractors that we met and we selected Trig Builders because Yossi was the most competitively priced and the referrals that we got on him and his company were very positive. Yossi and the workers were very easy people to work and to deal with and Yossi designed the kitchen exactly the way we wanted it with some nice additions of things that we didn’t think we will get. His suggestions about the new kitchen layout, where and what materials to buy were very helpful. Also, his advises and recommendation on where to buy the cabinets, lightings, plumbing and appliances saved us a lot of money. The end result of the new kitchen was perfect and one of the things that added a huge plus before we hired them was the warranty that included in the price of the work that they did."
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
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FAQs for addition to existing structure building service projects in Altadena, 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 Altadena, 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.