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Find Addition to existing structure builders in Discovery Bay

Avatar for Bickford Construction, Inc.

Bickford Construction, Inc.

PO Box 1144
5.00(
6
)
Approved Pro

Bickford Construction, Inc.

PO Box 1144
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


David Wilson Properties

PO Box 331
4.43(
7
)
Approved Pro

David Wilson Properties

PO Box 331
4.43(
7
)
Approved Pro
Customers say: Quick response
18 years of experience
Free onsite estimate

The experts with David Wilson Properties, serve the Galt area exclusively with pride and integrity. With a quality of work that is unparalleled, David Wilson Properties is the clear choice for your remodeling and construction project. We are licensed general contractors in the state of California and can handle any project from new construction to existing remodels. Call today to get started with a FREE Estimate!

"Best in the business! This was the 2nd house I've remodeled and Dave & his team outperformed all previous positive experiences & expectations. They removed 3 pony-walls, installed new porcelain, large tile flooring throughout (2200 sq ft), remodeled the bath to enlarge the shower,-added a modern stand-alone tub, installed new double marble-topped vanity, marble mosaic wainscotting throughout the bath, a marble-porcelain 7-foot long/12-foot high shower with luxury finishes (marble bench & rainshowers) & a chandelier above the tub with sconces flanking a 6-ft long mirror. They renovated the kitchen with new cabinets, pendant lights, quartz countertops on a new, better positioned island that Dave designed, porcelain flooring, under-cabinet lighting, and gas-burning double-sided fireplace before installing gas-top stove, electric wall ovens, refrigerator, dishwasher and double-work sink. They even installed 3 chandeliers (living room, dining & media rooms), drapery hardware at eight floor-length (12-ft high) windows & sliders, and an amazing new wet bar with vessel sink and marble with brass inlay backsplash!! They're prompt, hard-working (many times working on Saturdays and Sundays to meet deadlines), kept the project moving - even with supply delays (store's fault - not theirs) and additions I requested. They're attentive to detail, sensitive to HOA demands (never arriving too early & removing outdoor trash immediately), and professional at every turn - keeping the workspace clean/tidy. Dave goes above and beyond to satisfy his customers, reviving the art of customer service and taking it to a whole new level. For example, and though it wasn't on my list of repairs, he noted that my "new" home's air ducts needed cleaning - and shopped around for quotes I could afford. Likewise, he flushed my failing water heater in attempts to save it (original to house built in 1997). I can't say enough about this fabulous team of professionals who are as kind and personable as they are professional and skilled. I strongly recommend Dave and his team for ANY home remodel you're considering. Dave's part-designer in addition to being a fabulous contractor. He made several suggestions along the way, and I'm glad I took his advice (otherwise I wouldn't have this amazing, gourmet kitchen w/double-fireplace!). I interviewed and researched several contractors before engaging him with most exceeding his quotes by 15-25%. He's reasonably priced, comes when he says he'll be there, and makes sure the client is happy with the final product. (He even checks back a couple of weeks after the job is completed to ensure everything is functioning as it's supposed to.) I'm hiring him for my next project of replacing entry doors, and am absolutely confident he'll do a phenomenal job! THANKS DAVE, LOU and WAYNE!!! You're the BEST!! (And SnowBall sends puppy hugs to each of you!) :)"

Julie H on February 2024

The experts with David Wilson Properties, serve the Galt area exclusively with pride and integrity. With a quality of work that is unparalleled, David Wilson Properties is the clear choice for your remodeling and construction project. We are licensed general contractors in the state of California and can handle any project from new construction to existing remodels. Call today to get started with a FREE Estimate!

"Best in the business! This was the 2nd house I've remodeled and Dave & his team outperformed all previous positive experiences & expectations. They removed 3 pony-walls, installed new porcelain, large tile flooring throughout (2200 sq ft), remodeled the bath to enlarge the shower,-added a modern stand-alone tub, installed new double marble-topped vanity, marble mosaic wainscotting throughout the bath, a marble-porcelain 7-foot long/12-foot high shower with luxury finishes (marble bench & rainshowers) & a chandelier above the tub with sconces flanking a 6-ft long mirror. They renovated the kitchen with new cabinets, pendant lights, quartz countertops on a new, better positioned island that Dave designed, porcelain flooring, under-cabinet lighting, and gas-burning double-sided fireplace before installing gas-top stove, electric wall ovens, refrigerator, dishwasher and double-work sink. They even installed 3 chandeliers (living room, dining & media rooms), drapery hardware at eight floor-length (12-ft high) windows & sliders, and an amazing new wet bar with vessel sink and marble with brass inlay backsplash!! They're prompt, hard-working (many times working on Saturdays and Sundays to meet deadlines), kept the project moving - even with supply delays (store's fault - not theirs) and additions I requested. They're attentive to detail, sensitive to HOA demands (never arriving too early & removing outdoor trash immediately), and professional at every turn - keeping the workspace clean/tidy. Dave goes above and beyond to satisfy his customers, reviving the art of customer service and taking it to a whole new level. For example, and though it wasn't on my list of repairs, he noted that my "new" home's air ducts needed cleaning - and shopped around for quotes I could afford. Likewise, he flushed my failing water heater in attempts to save it (original to house built in 1997). I can't say enough about this fabulous team of professionals who are as kind and personable as they are professional and skilled. I strongly recommend Dave and his team for ANY home remodel you're considering. Dave's part-designer in addition to being a fabulous contractor. He made several suggestions along the way, and I'm glad I took his advice (otherwise I wouldn't have this amazing, gourmet kitchen w/double-fireplace!). I interviewed and researched several contractors before engaging him with most exceeding his quotes by 15-25%. He's reasonably priced, comes when he says he'll be there, and makes sure the client is happy with the final product. (He even checks back a couple of weeks after the job is completed to ensure everything is functioning as it's supposed to.) I'm hiring him for my next project of replacing entry doors, and am absolutely confident he'll do a phenomenal job! THANKS DAVE, LOU and WAYNE!!! You're the BEST!! (And SnowBall sends puppy hugs to each of you!) :)"

Julie H on February 2024


Avatar for ABR Quality Resources Inc

ABR Quality Resources Inc

100 N Hill Blvd
5.00(
2
)
Approved Pro

ABR Quality Resources Inc

100 N Hill Blvd
5.00(
2
)
Approved Pro
19 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 BE HOME REMODELING INC

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
Approved Pro

BE HOME REMODELING INC

282 Bayview Ave
4.95(
11
)
Approved Pro
Customers say: Quick response
479 local quotes requested
1 years of experience

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025

Be Home Remodeling is a home improvement company dedicated to transforming spaces with quality craftsmanship and personalized service. We specialize in a range of remodeling projects, from kitchens and bathrooms to full home renovations, back yard remodeling and more. Our team of experienced professionals collaborates closely with clients to understand their vision and bring it to life, ensuring each project reflects their style and meets their needs. Whether you're looking to update a single room or undertake a complete overhaul, Be Home Remodeling is here to make your dream home a reality.

"My journey began when I met Mario from Be Home Remodeling. I started with just one bathroom remodel, and I was immediately impressed by the professionalism, attention to detail, and high-quality craftsmanship he and his team delivered. The communication throughout the project was clear and consistent, and they made sure every step met my expectations. Since then, I?ve trusted Be Home Remodeling with additional projects and have always been more than satisfied with the results. Highly recommend Mario and his team to anyone looking for reliable and high-quality construction work"

nate b on July 2025


Red Line Remodeling & Design, LLC

870 Hillside Terrace
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Red Line Remodeling & Design, LLC

870 Hillside Terrace
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
22 local quotes requested
2 years of experience

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.

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.


Avatar for Sarmento Bros. Construction Inc

Sarmento Bros. Construction Inc

556 E Edison St
5.00(
9
)
Approved Pro

Sarmento Bros. Construction Inc

556 E Edison St
5.00(
9
)
Approved Pro
1 years of experience
Free onsite estimate

Sarmento Bros. Construction 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 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.

"This experience was my first remodel and it was fantastic. Sarmento Bros were very professional and kind. They guided me through the renovation process. They don’t start working unless they have all the materials which makes the renovation go by fast. Very clean and courteous people. I will be using them in my future projects."

Tammy C on April 2025

Sarmento Bros. Construction 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 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.

"This experience was my first remodel and it was fantastic. Sarmento Bros were very professional and kind. They guided me through the renovation process. They don’t start working unless they have all the materials which makes the renovation go by fast. Very clean and courteous people. I will be using them in my future projects."

Tammy C on April 2025


Avatar for Pacific Bay Construction

Pacific Bay Construction

1990 North California Boulevard, Suite 20
5.00(
6
)
Approved Pro

Pacific Bay Construction

1990 North California Boulevard, Suite 20
5.00(
6
)
Approved Pro
12 years of experience
Free onsite estimate

We are 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 services that are customizable to each individual project. 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 look forward to building lasting relationships and guarantee your satisfaction!

"I couldn't be more thrilled with my decision to hire Omar for my bathroom remodel. I wish I would have initially hired him for 100% of the job, unfortunately I did not and he ended up needing to clean up the damage someone else did. He squeezed me into his schedule on a weekend to correct the final details the other company dropped the ball on!! He is the only quote I received where I genuinely felt like he wanted me to feel heard and implement my vision and budget with his expertise. He is prompt, responsive, kind, honest, extremely knowledgeable in his trade and passionate about what he does. I can't emphasize enough how much I was dreading this remodel from previous crooked contractors but I am over the moon with how seamless my remodel was with Pacific Bay Construction. I had high expectations and expressed such for this project, I was so satisfied that I even referred him to my parents and he took care of their remodel recently. "

Kim B on July 2025

We are 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 services that are customizable to each individual project. 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 look forward to building lasting relationships and guarantee your satisfaction!

"I couldn't be more thrilled with my decision to hire Omar for my bathroom remodel. I wish I would have initially hired him for 100% of the job, unfortunately I did not and he ended up needing to clean up the damage someone else did. He squeezed me into his schedule on a weekend to correct the final details the other company dropped the ball on!! He is the only quote I received where I genuinely felt like he wanted me to feel heard and implement my vision and budget with his expertise. He is prompt, responsive, kind, honest, extremely knowledgeable in his trade and passionate about what he does. I can't emphasize enough how much I was dreading this remodel from previous crooked contractors but I am over the moon with how seamless my remodel was with Pacific Bay Construction. I had high expectations and expressed such for this project, I was so satisfied that I even referred him to my parents and he took care of their remodel recently. "

Kim B on July 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
49 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


Avatar for Bear Remodeling, Inc.

Bear Remodeling, Inc.

2678 North Main Street, Unit 28
4.91(
16
)
Approved Pro

Bear Remodeling, Inc.

2678 North Main Street, Unit 28
4.91(
16
)
Approved Pro
Customers say: Quality work
6 years of experience
Free onsite estimate

**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 8K*- 10k depending on job size* * Unfortunately, at this time we do not have a bilingual representative. (no spanish speaker) 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 (non prefab) 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/mobile homes or offer handyman services, Small jobs)

"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

**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 8K*- 10k depending on job size* * Unfortunately, at this time we do not have a bilingual representative. (no spanish speaker) 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 (non prefab) 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/mobile homes or offer handyman services, Small jobs)

"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 SAN & ZOE GENERAL CONTRACTOR INC

SAN & ZOE GENERAL CONTRACTOR INC

1317 PALMERA AVE
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

SAN & ZOE GENERAL CONTRACTOR INC

1317 PALMERA AVE
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
25 local quotes requested
10 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!

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!

...
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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.

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.