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Find Addition to existing structure builders in El Sobrante

Everson David Perez

5.00(
3
)
•Approved Pro

Everson David Perez

5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

Everson David Perez is the leading general contractor serving Vallejo and the surrounding areas. With over two years experience in projects ranging from Bathroom remodels to full service multi room renovations, we look forward to earning your business. Call today for a free estimate! Family owned and operated.

"They were able to start right away and very professional. I got a bang for the buckð"

Cathy B on March 2019

Everson David Perez is the leading general contractor serving Vallejo and the surrounding areas. With over two years experience in projects ranging from Bathroom remodels to full service multi room renovations, we look forward to earning your business. Call today for a free estimate! Family owned and operated.

"They were able to start right away and very professional. I got a bang for the buckð"

Cathy B on March 2019

Avatar for Fixit Construction, Inc.

Fixit Construction, Inc.

3.00(
1
)
•Approved Pro

Fixit Construction, Inc.

3.00(
1
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

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! Book with us online or feel free to give us a call today!

"They were professional and completed the project on time."

Elizabete T on September 2016

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! Book with us online or feel free to give us a call today!

"They were professional and completed the project on time."

Elizabete T on September 2016

Ashbury General Contracting and Engineering

4.50(
2
)
•Approved Pro

Ashbury General Contracting and Engineering

4.50(
2
)
•Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
35 years of experience

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. 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 forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. 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 forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023

AM GENERAL CONTRACTOR

5.00(
2
)
•Approved Pro

AM GENERAL CONTRACTOR

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

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.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 2020

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.

"What ever he plans for the project,He compleat that.He is honest and fair.I will refer him to my friends and family."

Mina R on November 2020

Avatar for Grid Design Build

Grid Design Build

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Grid Design Build

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!

GR Innovative Builders

5.00(
2
)
•Approved Pro

GR Innovative Builders

5.00(
2
)
•Approved Pro
Customers say: Quick response
35 years of experience
Free onsite estimate

We are 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. M-F 8-5PM

"They deserve 10 stars. Simply the best in every way. The entire team - Marlyn, Gilbert and Gus - were lovely to work with, even under stress and pressure. Their professionalism was unwavering. We did a complex kitchen remodel with structural changes, and they were thorough and detailed in their work, provided white glove service and kept the project moving, staying ahead of schedule and within budget. They were transparent about change orders and did not nickel and dime us. Although they weren't the cheapest, they weren't the most expensive and were spot on on their original budget and quote. Worth every penny. Communications was terrific, service was 5 star, and the craftsmanship is superb. I would work with them and recommend them at every opportunity. "

J. H on September 2025

We are 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. M-F 8-5PM

"They deserve 10 stars. Simply the best in every way. The entire team - Marlyn, Gilbert and Gus - were lovely to work with, even under stress and pressure. Their professionalism was unwavering. We did a complex kitchen remodel with structural changes, and they were thorough and detailed in their work, provided white glove service and kept the project moving, staying ahead of schedule and within budget. They were transparent about change orders and did not nickel and dime us. Although they weren't the cheapest, they weren't the most expensive and were spot on on their original budget and quote. Worth every penny. Communications was terrific, service was 5 star, and the craftsmanship is superb. I would work with them and recommend them at every opportunity. "

J. H on September 2025

Avatar for Golden View Renovation, Inc.

Golden View Renovation, Inc.

4.71(
14
)
•Approved Pro

Golden View Renovation, Inc.

4.71(
14
)
•Approved Pro
Customers say: Quick response
39 local quotes requested
5 years of experience

Golden View Renovation Inc. 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"We had our two bathrooms fully remodeled by Golden View 4 years ago, and were very happy with the results. Recently we noticed a leak from the shower in one of them that was affecting the nearby flooring. Asaf and the team really came through for us, they diagnosed the problem - a shower pan leak - opened the walls to clean and mitigate mold, planned and executed a partial demolition and rebuild of the shower including an improved method for waterproofing, and restored the bathroom and walls back to original condition and full functioning. All of this and they didn’t charge us, since Asaf told us he wants to stand behind their original work and fix problems arising. Five stars for sure! "

John G on July 2025

Golden View Renovation Inc. 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"We had our two bathrooms fully remodeled by Golden View 4 years ago, and were very happy with the results. Recently we noticed a leak from the shower in one of them that was affecting the nearby flooring. Asaf and the team really came through for us, they diagnosed the problem - a shower pan leak - opened the walls to clean and mitigate mold, planned and executed a partial demolition and rebuild of the shower including an improved method for waterproofing, and restored the bathroom and walls back to original condition and full functioning. All of this and they didn’t charge us, since Asaf told us he wants to stand behind their original work and fix problems arising. Five stars for sure! "

John G on July 2025

Avatar for Management Design V. Brothers Corp.

Management Design V. Brothers Corp.

5.00(
1
)
•Approved Pro

Management Design V. Brothers Corp.

5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

MANAGEMENT DESIGN V. BROTHERS CORP 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

"They did such a great job. Jose was extremely easy and flexible to work with. The crew did a very thorough job and my new steps look and feel great and very sturdy. I’ve received many compliments from people in my neighborhood about my new steps. I’m very happy with the job and wouldn’t hesitate to hire Management Design Brothers again for any large project that I have. A job very well done!!"

Gregory H on January 2025

MANAGEMENT DESIGN V. BROTHERS CORP 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

"They did such a great job. Jose was extremely easy and flexible to work with. The crew did a very thorough job and my new steps look and feel great and very sturdy. I’ve received many compliments from people in my neighborhood about my new steps. I’m very happy with the job and wouldn’t hesitate to hire Management Design Brothers again for any large project that I have. A job very well done!!"

Gregory H on January 2025

OM & K BUILDERS COMPANY

5.00(
1
)
•Approved Pro

OM & K BUILDERS COMPANY

5.00(
1
)
•Approved Pro
Free onsite estimate

OM & K BUILDERS COMPANY is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"We had a great experience with OM&K. They were on time, on budget and worked day and night (and weekends) until the job was done. Great outcome and easy to work with. Definitely recommend. "

david h on September 2025

OM & K BUILDERS COMPANY is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"We had a great experience with OM&K. They were on time, on budget and worked day and night (and weekends) until the job was done. Great outcome and easy to work with. Definitely recommend. "

david h on September 2025

Golden View Renovation, Inc.

4.71(
14
)
•Approved Pro

Golden View Renovation, Inc.

4.71(
14
)
•Approved Pro
Customers say: Quick response
5 years of experience

Golden View Renovation Inc. 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"We had our two bathrooms fully remodeled by Golden View 4 years ago, and were very happy with the results. Recently we noticed a leak from the shower in one of them that was affecting the nearby flooring. Asaf and the team really came through for us, they diagnosed the problem - a shower pan leak - opened the walls to clean and mitigate mold, planned and executed a partial demolition and rebuild of the shower including an improved method for waterproofing, and restored the bathroom and walls back to original condition and full functioning. All of this and they didn’t charge us, since Asaf told us he wants to stand behind their original work and fix problems arising. Five stars for sure! "

John G on July 2025

Golden View Renovation Inc. 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 clients. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our clients' interests and make their concerns the basis of our business.

"We had our two bathrooms fully remodeled by Golden View 4 years ago, and were very happy with the results. Recently we noticed a leak from the shower in one of them that was affecting the nearby flooring. Asaf and the team really came through for us, they diagnosed the problem - a shower pan leak - opened the walls to clean and mitigate mold, planned and executed a partial demolition and rebuild of the shower including an improved method for waterproofing, and restored the bathroom and walls back to original condition and full functioning. All of this and they didn’t charge us, since Asaf told us he wants to stand behind their original work and fix problems arising. Five stars for sure! "

John G on July 2025

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FAQs for addition to existing structure building service projects in El Sobrante, 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 El Sobrante, 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