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Find Addition to existing structure builders in Port-costa

Avatar for S&L REMODELING AND DESIGN INC
S&L REMODELING AND DESIGN INC
4.9(
47
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2013

Free estimates

Offers commercial services

"Great! Excellent communication from the project manager, work crew went out of their way to do a great job and to pick up materials for me when delivery wasn't possible. They were punctual, cleaned up at the end of each day, tried to minimize the intrusion as much possible, and were really nice guys, great to work with. Work was done on time and on budget. Kitchen looks great and I couldn't be happier. The price was for labor and raw materials. We supplied the cabinets, lighting, countertops, sink, appliances, and windows. We also decided to get the attic insulated at the same time at their suggestion- that addition was not included in the cost below (I don't remember how much it was but it was reasonable.) Here's what the work included: Demo existing kitchen including walls, floor, ceiling and windows. New electrical sub panel and wiring in kitchen Gas line added to kitchen (gas was already in the basement area) Installation of new walls, floors, ceiling, windows, doors, trim Installation of cabinets, countertops, appliances, sink Painting Attic insulation (additional)"
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom
Moraga - Bathroom

+65

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for Zacarias Remodeling Construction
Zacarias Remodeling Construction
5.0(
33
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2009

Free estimates

Customers say: True professional

"Zacarias Remodeling Construction is AMAZING! Oscar and his crew recently did a complete kitchen/ family room renovation for us and it was such a wonderful experience. Oscar and his team are incredibly professional and "can do". We were living at our vacation house during the renovation and trusted them to make decisions and keep us in the loop with calls, texts, and photos. They were always so responsive and did beautiful work. We had several unexpected structural issues arise that were due to previous work that another contractor had done at our house, and they found creative and cost effective ways to correct the problems. They are also just such lovely people--so kind and accommodating, always trying to make the client happy. And they kept the job site very clean and tidy. We trusted them completely to keep our home safe while we were living remotely. We cannot recommend them highly enough for any sized job. Their workmanship is phenomenal and our kitchen/family room turned out gorgeous!"
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
New kitchen, bedroom and bathroom
Remodeling - General Project

+50

24 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for H Flores Construction
H Flores Construction
5.0(
20
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"As you can see Huver has done several things for me. His pricing is fair and he works with you to give you what you need within your budget. The last job he did I was recovering from surgery. The first day I had to ask them to leave early and he said no problem and said if I wanted to skip the next day that would work. He said my health came first. I highly recommend he for any thing you may need done."
Set up standing tu
Bathroom
Full remodeling
Full remodeling
Full remodeling

+22

Response time2 days
3 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for BUILDERS GROUP & DESIGN INC
BUILDERS GROUP & DESIGN INC
5.0(
21
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Our bathroom was outdated and unattractive, so we wanted to hire a professional to help with the design and get the job done right. We found Builders Group on Angie, and Mike came out to give us a quote. What set Mike apart from the others was his attention to detail and how great he was with people. We decided to hire him, and we were happy with our choice from the very beginning."
South San Francisco
South San Francisco
South San Francisco
South San Francisco
South San Francisco

+139

11 neighbors recently requested a quote
My Remodeling Group
5.0(
31
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Transformation begins the moment My Remodeling Group steps into your home. For this kitchen remodel, every detail was carefully planned to improve flow, storage, and style. From modern cabinetry to clean finishes, the space was redesigned to feel open, functional, and welcoming. The result is a kitchen that supports everyday living while adding lasting value and visual appeal to the home."
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We found McCormick home builders through Angie’s list. They were not one of our original contacts, but they contacted us and came out to give us a quote. Matteo was extremely helpful, informative, honest, and gave us reasonable realistic prices, and did not try to inflate the prices or pressure us in anyway. We felt very comfortable with him immediately. We felt like he was a member of the family that we could just talk to and ask questions he was very personable. He gave us his contact number in case we had other questions and he was always available when we needed him for any type of questions or concerns. Mateo‘s team did a beautiful job. They were fast. They were efficient. They cleaned up beautifully. They did a wonderful job. They were very considerate of our time our needs and our neighbors. They were an absolute pleasure to work with. I would highly recommend Matteo from McCormick home builders for any home building projects, and we will be calling him again in the future!"
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Waters Construction Co.
Waters Construction Co.
5.0(
5
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I’ve worked with Mike and his team for years on all kinds of projects, and they’ve always been amazing to work with. The quality of their work is top-notch, they stay on budget, and everything runs smoothly from start to finish. Their design sense is excellent and they always manage to get things done right on time. I can’t recommend them enough, truly a reliable, talented, and easy-to-work-with crew."
Kitchens
Kitchens
Kitchens
Kitchens
Kitchens

+14

Response time6 hrs
Response rate100%
Avatar for Cerletti & Kennedy Design-Build
Cerletti & Kennedy Design-Build
4.3(
109
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Warranties offered

"It was a design and build project: a 1200 sq ft 2-story addition to an existing house - two bedrooms, three baths, family room with wet bar, and office. Also a new 2-car garage. Matt Kennedy creatively designed the connection so as to access an existing 2nd story bedroom to the new hallway which connected it to one of the two new bathrooms. Robert Cerletti chose and managed very well the various subcontractors who were mostly expert professionals in their specialties - foundation, building structure, roofing, HVAC, plumbing, electrical, stucco and painting, wood/tile/carpeted flooring, and all finishing touches. From experience they knew how to work with city planners to reduce time for permit issuances. They recommended some added special features such as crown moulding, ornate wood stair railings, custom bathroom fixtures, exterior French water drainage, and quality kitchenette cabinets in the family room. From start to finish the project completed on-time within 9 months - delayed only by some unexpected heavy rains at the beginning slowing some foundation work. Six months has now passed since project completion and I could not be more pleased with the new addition. Robert Cerletti was on site frequently, checking on subcontractor work, consulting with me for input, discussing suggestions and ideas, getting progress payments, and paying his subs on time. The project completed on budget except where I specified added work beyond plan. I highly recommend Cerletti and Kennedy for similar projects small or large."
in the beginning
 Finished!
Wish I had a good camera
 Eat in kitchen, new wood flooring, beam ceiling
 Chefs table

+45

Response time3 days
24 neighbors recently requested a quote
Recommended by76%of homeowners
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Our roof was in bad shape and we needed to have it replaced. I had gotten estimates and decided to go with Home Pro Remodeling. Emil and Brian were our contact people for the project. Emil was very professional and paid attention to our concerns. He worked with us through the entire project to our complete satisfaction. Brian is extremely courteous and helpful as well! The project went very smoothly, was completed before the initial project end date, and the results were beyond our expectations. The job turned our beautifully! Our new roof looks FANTASTIC! Our neighbors have commented to us how great it looks. We are very pleased with our experience with Home Pro Remodeling and would definitely recommend them."
Response time5 days
Recommended by77%of homeowners
BE&D Builders
3.8(
4
)
Addition to Existing Structure - Build

Serving Port-costa, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"My project was a major renovation of a 1985 Victorian home that suffered a devastating fire. Erik and his team did a beautiful job following my architect’s plans, and was also proactive about calling out necessary changes. He was very patient with all of my changes and very specific requests, and was a very calming influence when unexpected surprises inevitably arose during construction. The final results are beautiful, and an historic house has been saved. I look forward to working with Erik again in the future!"
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project

+11

1 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Port-costa, 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 Port-costa, 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.