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Find Addition to existing structure builders in Castaic

Avatar for KN Remodeling & Supplies Inc
KN Remodeling & Supplies Inc
4.8(
62
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"Working with Nathan & KN Remodeling was the best decision we made when undertaking our garage conversion job. Nathan understood exactly what we wanted, knew our budget parameters and provided us with a range of options that helped us stay within what we were seeking to spend. We wanted it to be NICE, but didn't need to over-do any of the finishes and spend needlessly on areas that were going to be used in-frequently. The end result was fantastic. The workmanship was of the highest order, the job was executed efficiently and with constant communication and oversight. The whole job was stress free and delivered on time. I can't recommend KN Remodeling highly enough!"
Additional Photos
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+48

Response time8 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for So Cal Builders & Design Inc
So Cal Builders & Design Inc
4.6(
293
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1982

Free estimates

Warranties offered

"Our initial meeting with Suj was great. Initially, we had in mind a much larger job. He had quoted us $3000 for the closet demolition / wall rebuild (non-load bearing), packaged with several other items. Together with the fee for drawings ($4000) and permits, this was a bit higher than we anticipated. However, we decided to go with Suj due to his responsiveness and professionalism. Out of our other quotes, Suj’s pricing was middle of the pack - not the cheapest or most expensive. When the drawings were complete and evaluated, he gave us an updated cost of $6000 over text message. The scope of work had changed, and this was no longer part of a bigger project - understandable. The issue was when he gave us the official estimate a week later and up’d the price once again to $9000. When asked what happened, his exact words were “well, I need to get paid too”. He had weeks to consider before quoting the $6000 and nothing had changed since then. The extra $3000 may be insignificant compared to most renovation costs, but for us in our first home, this was back breaking. We continued with Suj since we were already locked in and well past the 3 day cancellation period. Their work for the most part was exceptional. The new wall blended perfectly into our existing structure, and the ceiling patch was also well done. The problem here was the floor. They had dug up a 1” deep pit in the floor, likely to remove the wall studs. However, they did not patch the floor or even let us know this was going to be an issue. We were never told about the pit until I decided to check in on their progress one day towards the end of the wall build. This required us to pay a handyman to come in next day on a weekend to patch the concrete since we had cabinets being installed the following Tuesday. Suj was aware of this and did not believe it pertinent information. Overall, Suj and SoCal Builders do quality work, but the issues in pricing consistency lost us before the work even started. Not even telling us that we’d be left with a 1” deep pit in our floor after was another huge issue which should’ve been brought up much earlier. This was our first experience with a contractor and I’m not sure if this is typical or not. However, it’s enough to make me doubt I’d contact them for any future work."
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

+556

36 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Construction Masters
Construction Masters
4.7(
316
)
Addition to Existing Structure - Build

Serving Castaic, 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 McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We hired McCormick Home Builders to remodel our living room, and we are beyond pleased with the result. The team was professional, worked efficiently, and Aris design ideas made a huge difference. The room feels so much brighter and more spacious. This was the best decision we made for our home, and we were already planning our next remodel with them."
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for YB Builders Group Inc.
YB Builders Group Inc.
5.0(
10
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I could not recommend Ben Oded and his team more. I've now worked with Ben on multiple projects, including a new bathroom, renovations of existing bathrooms, electrical, plumbing, and most recently, an ADU, and on every occasion, Ben and his team have delivered. Ben is honest, reliable, and direct. When he says he is going to do something, I never have to worry about it getting done. He'll also be very honest with you about what's possible and at what price. There are also numerous examples of Ben going above and beyond. One such example was around my wedding. The week before the wedding, we lost all hot water...We had multiple plumbers over, but no one could find the solve. Two days before the wedding, we were scrambling. I called Ben, and within an hour, we had a plumber over, who fixed the issue and at a fraction of the cost. I could not recommend Ben more. Call him for your home or investment property renovation needs..you won't regret it!"
Bathroom Remodel
Master bathroom
Master bathroom
Master bedroom
Kitchen Remodel

+74

81 neighbors recently requested a quote
Avatar for I.N.G. Construction & Inv.
I.N.G. Construction & Inv.
4.3(
110
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"I was extremely pleased with everything they did for me. I had work done on an apartment building in Burbank and I live in Idaho. Very detailed. Did everything they said they would do. I would definately hire them again. Supplied me with input daily and pictures. Quality of work was superb."
Bathrooms In Studio City
Los Angeles, CA - Custom Home Rebuild
Mt. Washington, CA  - Complete Kitchen Remodel
Malibu - Entire House Remodel / Kitchen
Pasadena, CA / Master Bathroom Addition

+696

Response time9 hrs
Response rate95%
5 neighbors recently requested a quote
Avatar for AMERICAN PROFESSIONAL BUILDER'S INC
AMERICAN PROFESSIONAL BUILDER'S INC
5.0(
19
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"I was totally wrong in thinking that this company would do a good job because in reality they did something spectacular, the entire work team was very kind and attentive to our family, we are a family that does not open the door to anyone but we decided to trust American Professional Builders, Jose was very friendly and understanding with all of our needs, he always tried to adapt the work to each one's style, my children's rooms are comfortable, elegant and at the same time they can play and have fun with the design that Jose created especially for them, our yards are safe for the children and at the same time we can enjoy a weekend with the wonderful Deck with fireplace and kitchen, the pool with games that Jose recommended and that he built is beautiful and fun for the family, the type of tile he used looks luxurious and the pavers he installed with the artificial grass around it were exactly what we dreamed of, we are going to build an ADU soon and we are already working on the pl"
Finished outdoor patio remodel.
Finished outdoor patio remodel.
Finished concrete patio.
Finished outdoor canopy.
Finished outdoor patio remodel.

+39

Response time5 hrs
Response rate99%
11 neighbors recently requested a quote
Avatar for Universal Home Design, Inc.
Universal Home Design, Inc.
4.9(
21
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"My husband and I just finished a remodel of our guest house in Sherwood Forest. We used a company called Universal Home Design Inc. The contractor and owner of the company Ouriel Lousky was most professional in every aspect of the job. His crews were timely and most efficient in every way. He had his subcontractors lined up so the job was never lagging behind. I would recommend him to anyone who is planning on a remodel or a renovation. Mary V."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+80

Response time3 days
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
4.4(
60
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Warranties offered

"Sol was the Unique Home Design & Remodeling project manager for the recent kitchen and bathroom renovation that we recently did and his team of skilled and hardworking did a wonderful job. We greatly recommend Unique Home Design & Remodeling and mainly Sol, The working crew and the office staff that was involved in our project and we will hire them again for any additional remodeling project in our house. Sol was the project manager on both remodeling projects (kitchen and bathroom), did a perfect designing job for the kitchen space by using most of the existing space with features that we needed and wanted for a while now. From start to end, the extra attention that Sol put to all the details of both projects was more than what we were looking for. He always gave wonderful ideas and suggestions and he made sure that we are happy with all the decisions about both renovations. We love both projects very much! The kitchen and the bathroom got a completely brand new look and they are very functional for our needs. It makes us very happy each time any of us walk into any of them!"
M
Response time1 day
Response rate96%
144 neighbors recently requested a quote
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Addition to Existing Structure - Build

Serving Castaic, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
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FAQs for addition to existing structure building service projects in Castaic, 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 Castaic, 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.