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Find Addition to existing structure builders in Fairfield

Avatar for Grid Design Build

Grid Design Build

1500 3rd St, Suite A
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Grid Design Build

1500 3rd St, Suite A
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
3 years of experience
Free onsite estimate

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

CPC Group LLC

11355 PYRITES WAY STE A5
5.00(
1
)
•Approved Pro

CPC Group LLC

11355 PYRITES WAY STE A5
5.00(
1
)
•Approved Pro
1 years of experience
Free onsite estimate

Veteran owned with over 40 years of experience, CPC Group LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"I couldn't be happier with my bathroom remodel from Clear Path Construction! From start to finish, their team was professional, communicative, and incredibly skilled. They took my vision and turned it into a stunning reality, with top-quality craftsmanship and attention to every detail. The process was smooth, and they kept everything on schedule while maintaining a clean and organized workspace. The final result exceeded my expectations. The customer service was excellent, all of my emails and calls were promptly returned and always with joy. Very happy with my experience!"

Dylan H on October 2025

Veteran owned with over 40 years of experience, CPC Group LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"I couldn't be happier with my bathroom remodel from Clear Path Construction! From start to finish, their team was professional, communicative, and incredibly skilled. They took my vision and turned it into a stunning reality, with top-quality craftsmanship and attention to every detail. The process was smooth, and they kept everything on schedule while maintaining a clean and organized workspace. The final result exceeded my expectations. The customer service was excellent, all of my emails and calls were promptly returned and always with joy. Very happy with my experience!"

Dylan H on October 2025

Avatar for EA Home Builders, Inc.

EA Home Builders, Inc.

5146 Red Oak Drive
5.00(
11
)
•Approved Pro

EA Home Builders, Inc.

5146 Red Oak Drive
5.00(
11
)
•Approved Pro
Customers say: Quick response
64 local quotes requested
14 years of experience

EA Home Builders is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It was a pleasure to work with Eric, we hired him for a complete backyard renovation which included tree removal, leveling the surface and place pavers and a deck on top. Also built a retaining wall. The work came out very nice in part because of the great design ideas that Eric gave us. The project ran into some unexpected issues that Eric was able to overcome nicely. We were impressed how Eric handled the project and met all the deliverables, also his team was extremely polite an professional. Our backyard now looks like the ones advertised in magazines. All this led us to start a new project with him to replace the cracked driveway with nice new pavers."

Gavril M on September 2025

EA Home Builders is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"It was a pleasure to work with Eric, we hired him for a complete backyard renovation which included tree removal, leveling the surface and place pavers and a deck on top. Also built a retaining wall. The work came out very nice in part because of the great design ideas that Eric gave us. The project ran into some unexpected issues that Eric was able to overcome nicely. We were impressed how Eric handled the project and met all the deliverables, also his team was extremely polite an professional. Our backyard now looks like the ones advertised in magazines. All this led us to start a new project with him to replace the cracked driveway with nice new pavers."

Gavril M on September 2025

Red Line Remodeling & Design, LLC

870 Hillside Terrace
4.86(
7
)
•Approved Pro

Red Line Remodeling & Design, LLC

870 Hillside Terrace
4.86(
7
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 local quotes requested

Red Line Remodeling & Design, LLC is the premier home improvement and remodeling company centrally located in Rio Vista serving Solano County, Sacramento County, San Joaquin, and Contra Costa County in California. We have over 20 years experience, family owned and operated. Our #1 goal as a company is having complete customer satisfaction and there is no job that is too big or too small. We specialize in a variety of projects Specializing in custom kitchen and bathroom remodeling, open concept and room additions. If you want the job done right, call us today for a free estimate.

"Extremely satisfied. I hired them for my kitchen remodel and then again for our bathroom remodel! High quality work! Friendly and easy to work with!! Will be using them again for our next project!"

Teresa U on April 2022

Red Line Remodeling & Design, LLC is the premier home improvement and remodeling company centrally located in Rio Vista serving Solano County, Sacramento County, San Joaquin, and Contra Costa County in California. We have over 20 years experience, family owned and operated. Our #1 goal as a company is having complete customer satisfaction and there is no job that is too big or too small. We specialize in a variety of projects Specializing in custom kitchen and bathroom remodeling, open concept and room additions. If you want the job done right, call us today for a free estimate.

"Extremely satisfied. I hired them for my kitchen remodel and then again for our bathroom remodel! High quality work! Friendly and easy to work with!! Will be using them again for our next project!"

Teresa U on April 2022

Avatar for Cerletti & Kennedy Design-Build

Cerletti & Kennedy Design-Build

2950 Buskirk Avenue, Suite 300
4.63(
87
)
•Approved Pro

Cerletti & Kennedy Design-Build

2950 Buskirk Avenue, Suite 300
4.63(
87
)
•Approved Pro
Super Service Award
Customers say: True professional
33 local quotes requested
38 years of experience

SPECIALIZING IN HAPPY CUSTOMERS! Cerletti & Kennedy Design-Build is a full service contractor, family owned and operated for three generations. We specialize in room additions, kitchens and all your remodeling needs. We offer comprehensive design services utilizing the latest 3D CAD technology so you can see your design choices before you build. We're prompt and cost effective, our workers are clean and courteous and our customers are satisfied and happy.

"The job got finished overall I was happy with the finish project. The job was not as smooth I had hoped for. I believe my experience on construction and expectation's might have been out of touch. I would for sure let them bid on more work for me if I ever planned to do any more construction."

Larry P on April 2025

SPECIALIZING IN HAPPY CUSTOMERS! Cerletti & Kennedy Design-Build is a full service contractor, family owned and operated for three generations. We specialize in room additions, kitchens and all your remodeling needs. We offer comprehensive design services utilizing the latest 3D CAD technology so you can see your design choices before you build. We're prompt and cost effective, our workers are clean and courteous and our customers are satisfied and happy.

"The job got finished overall I was happy with the finish project. The job was not as smooth I had hoped for. I believe my experience on construction and expectation's might have been out of touch. I would for sure let them bid on more work for me if I ever planned to do any more construction."

Larry P on April 2025

Avatar for Entrust Masonry Recovery

Entrust Masonry Recovery

2829 Loma Vista Ave
4.83(
9
)
•Approved Pro

Entrust Masonry Recovery

2829 Loma Vista Ave
4.83(
9
)
•Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Manual and his team were excellent workers. They kept the work area clean and did a great job. We had bricks repointed and porch surface restored. Would hire them again with no reservations. "

Donald H on June 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Manual and his team were excellent workers. They kept the work area clean and did a great job. We had bricks repointed and porch surface restored. Would hire them again with no reservations. "

Donald H on June 2025

Avatar for Taragano Design and Build

Taragano Design and Build

4494 Snow Berry Court
5.00(
1
)
•Approved Pro

Taragano Design and Build

4494 Snow Berry Court
5.00(
1
)
•Approved Pro
10 local quotes requested
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Working with yaniv has been fantastic front to back. He is on top of every detail and has exceed our expectations in regards to quality and timeline. He has guided us in the right direction with every step. Whether it was small things like how to set up electrical or broader topics like the design of our bathroom he has been so knowledgeable and clearly customized his approach to what he knows we want and need. We absolutely work with him again. "

Ben L on July 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Working with yaniv has been fantastic front to back. He is on top of every detail and has exceed our expectations in regards to quality and timeline. He has guided us in the right direction with every step. Whether it was small things like how to set up electrical or broader topics like the design of our bathroom he has been so knowledgeable and clearly customized his approach to what he knows we want and need. We absolutely work with him again. "

Ben L on July 2025

Avatar for JP Winchell Construction, Inc.

JP Winchell Construction, Inc.

10 Softwind Drive
5.00(
4
)
•Approved Pro

JP Winchell Construction, Inc.

10 Softwind Drive
5.00(
4
)
•Approved Pro
Customers say: Quick response
14 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"It was a great experience. He kept us apprized of the issues throughout project. I would use him again. "

James B on September 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"It was a great experience. He kept us apprized of the issues throughout project. I would use him again. "

James B on September 2025

Avatar for Chriswell Home Improvements

Chriswell Home Improvements

3628 Madison Ave
4.39(
44
)
•Approved Pro

Chriswell Home Improvements

3628 Madison Ave
4.39(
44
)
•Approved Pro
Customers say: Quality work
1531 local quotes requested
15 years of experience

Chriswell Home Improvements, Inc. is a veteran-owned home remodeling company offering various services, including roof replacement, Trex composite decking, James Hardie siding, exterior home coatings, Milgard and Anlin windows, sliding glass doors, entry doors, bathroom, and kitchen remodeling. We also have many financing options available to help make your home remodeling dreams a reality. Also, we offer discounts to Veterans, Teachers, and Seniors. Contact us today for a complimentary consultation!

"CHI has done an excellent job for me and I recommend them without hesitation for any remodeling work. Here's why: My job started out with an entry door replacement, evolved into a pantry expansion, and finally finished with an entire kitchen countertop replacement. I was very pleased with how they worked, the materials they used, and the attention to detail in the workmanship. And they were very responsive, communicated well and frequently, and checked in regularly to make sure the job was getting done right and on time. Each of their craftsmen were highly skilled, knew what they were doing, and didn't cut any corners. And each one was friendly and courteous to boot! I very much appreciated their attention to protecting the rest of the house, and they cleaned up the jobsite every single day at the end of their work day. Remodels are disruptive, no matter what. But this was about the least painful I've experienced. I have worked with a lot of contractors. CHI is a 10 out of 10."

Mark N on November 2024

Chriswell Home Improvements, Inc. is a veteran-owned home remodeling company offering various services, including roof replacement, Trex composite decking, James Hardie siding, exterior home coatings, Milgard and Anlin windows, sliding glass doors, entry doors, bathroom, and kitchen remodeling. We also have many financing options available to help make your home remodeling dreams a reality. Also, we offer discounts to Veterans, Teachers, and Seniors. Contact us today for a complimentary consultation!

"CHI has done an excellent job for me and I recommend them without hesitation for any remodeling work. Here's why: My job started out with an entry door replacement, evolved into a pantry expansion, and finally finished with an entire kitchen countertop replacement. I was very pleased with how they worked, the materials they used, and the attention to detail in the workmanship. And they were very responsive, communicated well and frequently, and checked in regularly to make sure the job was getting done right and on time. Each of their craftsmen were highly skilled, knew what they were doing, and didn't cut any corners. And each one was friendly and courteous to boot! I very much appreciated their attention to protecting the rest of the house, and they cleaned up the jobsite every single day at the end of their work day. Remodels are disruptive, no matter what. But this was about the least painful I've experienced. I have worked with a lot of contractors. CHI is a 10 out of 10."

Mark N on November 2024

Avatar for Forever Green Cali

Forever Green Cali

3230 Arena Blvd STE 245-345
5.00(
3
)
•Approved Pro

Forever Green Cali

3230 Arena Blvd STE 245-345
5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
932 local quotes requested

At ForeverGreen Cali, we design and build custom outdoor living spaces tailored to enhance both front and backyards. Our services include everything from sod to hardscaping conversions, retaining wall installations, stamped and colored concrete, artificial grass, and flagstone with decomposed granite integration. We also specialize in sod installation, comprehensive solid and French drainage solutions, and outdoor kitchen construction, supported by 3D design visuals. Our focus is on using top-tier materials and expert craftsmanship, with a commitment to clear communication and consistently delivering exceptional results.

"I would highly recommend Forever-Green Cali. They are very professional, courteous, and knowledgeable about their profession. After an initial consultation with the owner, John, who provided recommendations based on my vision for my front yard. He made great suggestions that I would never have thought of, which made my yard beautiful and efficient with rocks that I love."

sharon o on October 2025

At ForeverGreen Cali, we design and build custom outdoor living spaces tailored to enhance both front and backyards. Our services include everything from sod to hardscaping conversions, retaining wall installations, stamped and colored concrete, artificial grass, and flagstone with decomposed granite integration. We also specialize in sod installation, comprehensive solid and French drainage solutions, and outdoor kitchen construction, supported by 3D design visuals. Our focus is on using top-tier materials and expert craftsmanship, with a commitment to clear communication and consistently delivering exceptional results.

"I would highly recommend Forever-Green Cali. They are very professional, courteous, and knowledgeable about their profession. After an initial consultation with the owner, John, who provided recommendations based on my vision for my front yard. He made great suggestions that I would never have thought of, which made my yard beautiful and efficient with rocks that I love."

sharon o on October 2025

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FAQs for addition to existing structure building service projects in Fairfield, CA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Fairfield, 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.

See all articles
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