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Find Addition to existing structure builders in Discovery Bay

Avatar for Bickford Construction, Inc.

Bickford Construction, Inc.

5.00(
6
)
•Approved Pro

Bickford Construction, Inc.

5.00(
6
)
•Approved Pro
Customers say: Quick response
3 years of experience
Free onsite estimate

At Bickford Construction, you get a team of experienced contractors that can help in all aspects of your project from pre-construction through completion. We take pride in delivering results on every project in a timely manner and within budget. We also bring decades of relationships with key people involved in ensuring your projects go as smoothly as possible. We understand that the last thing you want is a headache or to spend more money than you planned on. With us, we make it a priority to ensure your project is completed without setbacks. Bickfordconstruction.com

"They did what they said they would do. They did it in a very timely manner. They were always professional and got the job done."

Patrick V on January 2023

At Bickford Construction, you get a team of experienced contractors that can help in all aspects of your project from pre-construction through completion. We take pride in delivering results on every project in a timely manner and within budget. We also bring decades of relationships with key people involved in ensuring your projects go as smoothly as possible. We understand that the last thing you want is a headache or to spend more money than you planned on. With us, we make it a priority to ensure your project is completed without setbacks. Bickfordconstruction.com

"They did what they said they would do. They did it in a very timely manner. They were always professional and got the job done."

Patrick V on January 2023

Avatar for Red Line Remodeling & Design, LLC

Red Line Remodeling & Design, LLC

5.00(
1
)
•Approved Pro

Red Line Remodeling & Design, LLC

5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 local quotes requested

With over 20 years experience in remodeling and construction, we are your one stop shop for all phases of your remodel or home improvement project! Why do it yourself, when you can have a SELPH do it for you! We are a husband and wife team who enjoy making your space exactly what you have always dreamed of. We do custom design with an auto-cad program to show you what your new space will look like! Your Vision. Our Expertise. We pride ourselves in being a company that provides quality custom work. Your job will never be subbed out to the lowest bidder. Who you see is who you get! Call or email us today for your free quote! Licensed, Bonded and Insured!

"Amazingly well! Excellent communication about this huge job, nicely balanced with other customer’s needs, Redline not only did an excellent job but lots of education and information about options. They were very accommodating of surprises, and thorough but efficient at predicting costs. Couldn’t have asked for more competent work at a fair price."

Cynthia G on September 2024

With over 20 years experience in remodeling and construction, we are your one stop shop for all phases of your remodel or home improvement project! Why do it yourself, when you can have a SELPH do it for you! We are a husband and wife team who enjoy making your space exactly what you have always dreamed of. We do custom design with an auto-cad program to show you what your new space will look like! Your Vision. Our Expertise. We pride ourselves in being a company that provides quality custom work. Your job will never be subbed out to the lowest bidder. Who you see is who you get! Call or email us today for your free quote! Licensed, Bonded and Insured!

"Amazingly well! Excellent communication about this huge job, nicely balanced with other customer’s needs, Redline not only did an excellent job but lots of education and information about options. They were very accommodating of surprises, and thorough but efficient at predicting costs. Couldn’t have asked for more competent work at a fair price."

Cynthia G on September 2024

Avatar for Rose Remodeling, INC

Rose Remodeling, INC

4.33(
6
)
•Approved Pro

Rose Remodeling, INC

4.33(
6
)
•Approved Pro
Customers say: Quick response
440 local quotes requested
7 years of experience

We are Rose Remodeling family owned and operated, based out of Elk Grove, CA and proudly serving the greater area of Sacramento. We offer free estimates and competitive pricing. Our Founder, has been in the remodeling industry since he was 18 years old. He loves working with his clients, and always seeks to under promise and overdeliver. Call us today for a free estimate! (916) 546-9871

"Sales Rep. Joshua from Contra costa county stated they are a good team and they are a team and there's only one pro came and on the first day supposed to come and he was sick so we lost days of work. my husband used a whole vacation week and we lost days . They had multiple call offs and the person that was working . They would not stay whole day . There was days will he come at 9am and left 12nn and stated that how will needed to work other job site. and he wouldn't be at our work site a whole day and complain already multiple times to the project manager Justin rowe. We keep reminding them to put a shoes to protect our floors and we paid so much for the floor and the labor . They had a gasps in the baseboard and everything and already paid 5000 and its original charge 7200 but we thought we had hire a professional work done but we had hire somebody else to fix the job and we paid a lot of money thinking this was the trust worthy company but we took advantage and Justin cared about collecting my husband and needed a check to get the month quota and the job was not done and we are disappointed and we spend a lot of money for this project. WE have picture of the work and everything ."

George A on November 2025

We are Rose Remodeling family owned and operated, based out of Elk Grove, CA and proudly serving the greater area of Sacramento. We offer free estimates and competitive pricing. Our Founder, has been in the remodeling industry since he was 18 years old. He loves working with his clients, and always seeks to under promise and overdeliver. Call us today for a free estimate! (916) 546-9871

"Sales Rep. Joshua from Contra costa county stated they are a good team and they are a team and there's only one pro came and on the first day supposed to come and he was sick so we lost days of work. my husband used a whole vacation week and we lost days . They had multiple call offs and the person that was working . They would not stay whole day . There was days will he come at 9am and left 12nn and stated that how will needed to work other job site. and he wouldn't be at our work site a whole day and complain already multiple times to the project manager Justin rowe. We keep reminding them to put a shoes to protect our floors and we paid so much for the floor and the labor . They had a gasps in the baseboard and everything and already paid 5000 and its original charge 7200 but we thought we had hire a professional work done but we had hire somebody else to fix the job and we paid a lot of money thinking this was the trust worthy company but we took advantage and Justin cared about collecting my husband and needed a check to get the month quota and the job was not done and we are disappointed and we spend a lot of money for this project. WE have picture of the work and everything ."

George A on November 2025

Avatar for BNO Builders

BNO Builders

5.00(
2
)
•Approved Pro

BNO Builders

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

BNO Builders is a locally owned and operated company with over 20 years industry experience. We are a full service general contractor. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We will treat your home as if it were our own. Workmanship guaranteed. Call us today!

"BNO Builders did a fantastic job on our home renovation. Nestor, our contractor, was a knowledgeable and compassionate professional who walked us through the whole process from the start to finishing the smallest details. He made sure everything was done to a high standard. The workers were all very respectful of us and the property. And they finished our whole townhome faster than any of the other contractors quoted. We would choose BNO over and over again so long as Nestor would be our contractor. We put our full trust in him, and he came through every time."

Dina P on August 2024

BNO Builders is a locally owned and operated company with over 20 years industry experience. We are a full service general contractor. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We will treat your home as if it were our own. Workmanship guaranteed. Call us today!

"BNO Builders did a fantastic job on our home renovation. Nestor, our contractor, was a knowledgeable and compassionate professional who walked us through the whole process from the start to finishing the smallest details. He made sure everything was done to a high standard. The workers were all very respectful of us and the property. And they finished our whole townhome faster than any of the other contractors quoted. We would choose BNO over and over again so long as Nestor would be our contractor. We put our full trust in him, and he came through every time."

Dina P on August 2024

Avatar for Waters Construction Co.

Waters Construction Co.

5.00(
4
)
•Approved Pro

Waters Construction Co.

5.00(
4
)
•Approved Pro
2025 years of experience
Free onsite estimate

We pride ourselves on delivering exceptional quality and meticulous planning in every project we undertake. Our team of highly qualified professionals brings years of experience, technical expertise, and a commitment to excellence that ensures each job is completed with precision and care. Whether it's a small renovation or a large-scale build, we approach every task with the same level of dedication and attention to detail. We understand that every client has a unique vision, and we make it our mission to bring those ideas to life. From concept to completion, we work collaboratively, offering guidance, transparency, and solutions tailored to your goals. Our reputation for reliability and reasonable pricing reflects our belief that great service should be accessible and stress-free. We don’t just build structures—we build trust, relationships, and lasting value.

"Michael and team did such an amazing job on our bathroom remodel. They took our tiny, dysfunctional bathroom and turned it into a true master bathroom oasis in a short amount of time during the holiday season. When they had the space down to the studs, Michael sat down with us and discussed in detail the best possible use of the space and we couldn’t be happier with our final decision after going through the options. Michael was great at communicating and we still stay in touch to this day, which we truly appreciate. Great team who does great work and I will absolutely be giving Waters Construction a call for any and all future home renovations. I’ll let the pictures do the rest of the talking. "

Stace M on November 2025

We pride ourselves on delivering exceptional quality and meticulous planning in every project we undertake. Our team of highly qualified professionals brings years of experience, technical expertise, and a commitment to excellence that ensures each job is completed with precision and care. Whether it's a small renovation or a large-scale build, we approach every task with the same level of dedication and attention to detail. We understand that every client has a unique vision, and we make it our mission to bring those ideas to life. From concept to completion, we work collaboratively, offering guidance, transparency, and solutions tailored to your goals. Our reputation for reliability and reasonable pricing reflects our belief that great service should be accessible and stress-free. We don’t just build structures—we build trust, relationships, and lasting value.

"Michael and team did such an amazing job on our bathroom remodel. They took our tiny, dysfunctional bathroom and turned it into a true master bathroom oasis in a short amount of time during the holiday season. When they had the space down to the studs, Michael sat down with us and discussed in detail the best possible use of the space and we couldn’t be happier with our final decision after going through the options. Michael was great at communicating and we still stay in touch to this day, which we truly appreciate. Great team who does great work and I will absolutely be giving Waters Construction a call for any and all future home renovations. I’ll let the pictures do the rest of the talking. "

Stace M on November 2025

Avatar for ABR Quality Resources Inc

ABR Quality Resources Inc

5.00(
2
)
•Approved Pro

ABR Quality Resources Inc

5.00(
2
)
•Approved Pro
50 local quotes requested
4 years of experience

At Hamilton Exteriors, our mission is to serve our community with the highest-value construction solutions. Specializing in roofs, windows, and siding, we bring over 50 years of combined experience to every project. Our skilled team takes pride in meticulous craftsmanship and attention to detail, ensuring every job is done right the first time.

"I scheduled to have someone come give me an estimate for all new windows in our 1950s home with not so great Remodeling work by previous owners. Alex Li promptly met with us and it was a pleasure working with him & his crew throughout the entire process. They were always on time to work, left our home clean of debris & spectacular new JeldWin windows. Helped me with getting Financing as well...Just all around a great experience & highly recommend!"

Renee D on February 2025

At Hamilton Exteriors, our mission is to serve our community with the highest-value construction solutions. Specializing in roofs, windows, and siding, we bring over 50 years of combined experience to every project. Our skilled team takes pride in meticulous craftsmanship and attention to detail, ensuring every job is done right the first time.

"I scheduled to have someone come give me an estimate for all new windows in our 1950s home with not so great Remodeling work by previous owners. Alex Li promptly met with us and it was a pleasure working with him & his crew throughout the entire process. They were always on time to work, left our home clean of debris & spectacular new JeldWin windows. Helped me with getting Financing as well...Just all around a great experience & highly recommend!"

Renee D on February 2025

Avatar for Tech Line Construction, Inc.

Tech Line Construction, Inc.

5.00(
8
)
•Approved Pro

Tech Line Construction, Inc.

5.00(
8
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

At Tech Line Construction, we take immense pride in our long built reputation for building stunning, efficient home improvement projects that mirror the unique style and elegance of the people who live in them. Tech Line Construction has a standing passion for the intricacies and artistry involved with residential home improvement . With team members over 15 years in the industry and a wealth of experience, Tech Line Construction is the premier choice for those looking to craft their dreams into a reality. Our focus is every little detail and we take great pride in setting the bar for the highest standards in quality craftsmanship and proactive problem-solving. Don't hesitate to contact us today for a free consultation TECHLINECONSTRUCTIONDESIGN.COM Office@techlinconstruction.info (510)798-5869

"We had a great experience working with Tech Line Construction. They did a complete remodel of our kitchen, bathroom, and flooring. The whole process was very smooth and we are extremely happy with the results. Cooking in our new kitchen is a joy and we can't wait to entertain guests in our beautiful space."

Patricia M D on November 2022

At Tech Line Construction, we take immense pride in our long built reputation for building stunning, efficient home improvement projects that mirror the unique style and elegance of the people who live in them. Tech Line Construction has a standing passion for the intricacies and artistry involved with residential home improvement . With team members over 15 years in the industry and a wealth of experience, Tech Line Construction is the premier choice for those looking to craft their dreams into a reality. Our focus is every little detail and we take great pride in setting the bar for the highest standards in quality craftsmanship and proactive problem-solving. Don't hesitate to contact us today for a free consultation TECHLINECONSTRUCTIONDESIGN.COM Office@techlinconstruction.info (510)798-5869

"We had a great experience working with Tech Line Construction. They did a complete remodel of our kitchen, bathroom, and flooring. The whole process was very smooth and we are extremely happy with the results. Cooking in our new kitchen is a joy and we can't wait to entertain guests in our beautiful space."

Patricia M D on November 2022

R & M Construction

4.61(
68
)
•Approved Pro

R & M Construction

4.61(
68
)
•Approved Pro
Customers say: Terrific value
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
41 years of experience

R & M Construction has been building quality home additions and remodels since 1984. We also specialize in designer bathrooms and custom kitchen renovation. We also build custom ADU to fit inside of your property!

"Ron and his team were excellent to work with. They were timely, informative, and the quality of the work was great. The work was completed quicker than I anticipated. Plus, the pricing was reasonable. I will use R&M in the future!"

Chad C on July 2022

R & M Construction has been building quality home additions and remodels since 1984. We also specialize in designer bathrooms and custom kitchen renovation. We also build custom ADU to fit inside of your property!

"Ron and his team were excellent to work with. They were timely, informative, and the quality of the work was great. The work was completed quicker than I anticipated. Plus, the pricing was reasonable. I will use R&M in the future!"

Chad C on July 2022

Avatar for BEAR Remodeling Inc.

BEAR Remodeling Inc.

4.90(
10
)
•Approved Pro

BEAR Remodeling Inc.

4.90(
10
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
128 local quotes requested

Don't wait to create your dream home! ✨ Our new financing options make your remodel projects affordable NOW. 💰 Limited-time rates available—click the link to get started! ➡️https://www.enhancify.com/bear-remodeling-inc **Due to our current installation schedule we have a project minimum* depending on the job size- ask for details as it varies depending on project size- starting at $10 K Please call today to schedule a complimentary consultation 925-567-3021 BEAR Remodeling, Inc. is a family-owned business and a full-service General Contractor that specializes in residential home remodeling projects. Our services include bathroom remodeling, kitchen remodeling, room additions, garage conversions, and ADU'S With full licensing, bonding, and insurance, it ensures a reliable and trustworthy experience for its clients. Our team of experienced professionals, which includes both engineers and designers, collaborate in order to deliver exceptional results, consistently exceeding client expectations and transforming homes into stunning spaces. (we do not work with modular/trailer homes or offer handyman services.)

"Working with BEAR Remodeling on our ADU garage conversion has been a great experience! The 3D design has really helped us see the project before work began. The team has stayed organized, finished on time, and delivered exactly what we had imagined. Everything has turned out clean, modern, and built to last. We have happily recommended BEAR Remodeling to anyone looking for reliable remodeling services!"

Ryker H on May 2025

Don't wait to create your dream home! ✨ Our new financing options make your remodel projects affordable NOW. 💰 Limited-time rates available—click the link to get started! ➡️https://www.enhancify.com/bear-remodeling-inc **Due to our current installation schedule we have a project minimum* depending on the job size- ask for details as it varies depending on project size- starting at $10 K Please call today to schedule a complimentary consultation 925-567-3021 BEAR Remodeling, Inc. is a family-owned business and a full-service General Contractor that specializes in residential home remodeling projects. Our services include bathroom remodeling, kitchen remodeling, room additions, garage conversions, and ADU'S With full licensing, bonding, and insurance, it ensures a reliable and trustworthy experience for its clients. Our team of experienced professionals, which includes both engineers and designers, collaborate in order to deliver exceptional results, consistently exceeding client expectations and transforming homes into stunning spaces. (we do not work with modular/trailer homes or offer handyman services.)

"Working with BEAR Remodeling on our ADU garage conversion has been a great experience! The 3D design has really helped us see the project before work began. The team has stayed organized, finished on time, and delivered exactly what we had imagined. Everything has turned out clean, modern, and built to last. We have happily recommended BEAR Remodeling to anyone looking for reliable remodeling services!"

Ryker H on May 2025

Avatar for Tech Line Construction Inc.

Tech Line Construction Inc.

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Tech Line Construction Inc.

New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
71 local quotes requested
5 years of experience

Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded

Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded

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FAQs for addition to existing structure building service projects in Discovery Bay, 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 Discovery Bay, 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.

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