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Find Basement remodelers in Concord

Avatar for OT Bay Builders

OT Bay Builders

4.99(
77
)
•Approved Pro

OT Bay Builders

4.99(
77
)
•Approved Pro
Super Service Award
Customers say: Quick response
5 years of experience
Free onsite estimate

At OT Bay Builders, we believe every home tells a story — and we’re here to help you write yours. Serving homeowners across the Bay Area, we deliver high-quality remodeling built on craftsmanship, transparency, and lasting value. With over five years of proven experience and hundreds of successful projects, we take pride in honest communication, detailed project management, and results that exceed expectations. From your first consultation to final walkthrough, you’ll enjoy a smooth, stress-free process backed by a dedicated team that cares about your vision. Your home is more than a project — it’s a reflection of your lifestyle and dreams. At OT Bay Builders, we build homes that last, experiences that matter, and client relationships rooted in trust. Your dream is our passion. Let’s bring it to life with craftsmanship, integrity, and care. Contact OT Bay Builders today to schedule your free consultation or project estimate.

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."

Kolber S on April 2025

At OT Bay Builders, we believe every home tells a story — and we’re here to help you write yours. Serving homeowners across the Bay Area, we deliver high-quality remodeling built on craftsmanship, transparency, and lasting value. With over five years of proven experience and hundreds of successful projects, we take pride in honest communication, detailed project management, and results that exceed expectations. From your first consultation to final walkthrough, you’ll enjoy a smooth, stress-free process backed by a dedicated team that cares about your vision. Your home is more than a project — it’s a reflection of your lifestyle and dreams. At OT Bay Builders, we build homes that last, experiences that matter, and client relationships rooted in trust. Your dream is our passion. Let’s bring it to life with craftsmanship, integrity, and care. Contact OT Bay Builders today to schedule your free consultation or project estimate.

"We love our new deck! It’s sturdy, beautiful, and adds so much value to our backyard. The team listened to what we wanted and delivered exactly that, right down to the custom railing and built-in seating."

Kolber S on April 2025

Avatar for BE HOME REMODELING INC

BE HOME REMODELING INC

4.96(
13
)
•Approved Pro

BE HOME REMODELING INC

4.96(
13
)
•Approved Pro
Super Service Award
Customers say: Quick response
2 years of experience
Free onsite estimate

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.

"We recently had our bathroom remodeled by Be Home Remodeling, and I just wanted to share how happy we are with everything. Pouria, our project manager, was great — super organized, always kept us updated, and really listened to any concerns we had. Any time we needed something or had a question, he handled it right away. The crew (Manuel, Isaí )did an awesome job. They worked cleanly, were respectful of our home, and the quality of the work shows. The bathroom turned out even better than we expected, and we honestly love how everything came out. Overall, it was a really smooth experience, and we’d definitely recommend Be Home Remodeling and Pouria if you’re planning a remodel."

Svetlana K on March 2026

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.

"We recently had our bathroom remodeled by Be Home Remodeling, and I just wanted to share how happy we are with everything. Pouria, our project manager, was great — super organized, always kept us updated, and really listened to any concerns we had. Any time we needed something or had a question, he handled it right away. The crew (Manuel, Isaí )did an awesome job. They worked cleanly, were respectful of our home, and the quality of the work shows. The bathroom turned out even better than we expected, and we honestly love how everything came out. Overall, it was a really smooth experience, and we’d definitely recommend Be Home Remodeling and Pouria if you’re planning a remodel."

Svetlana K on March 2026

Avatar for Northwest Builders & Renovation, LLC

Northwest Builders & Renovation, LLC

5.00(
11
)
•Approved Pro

Northwest Builders & Renovation, LLC

5.00(
11
)
•Approved Pro
Super Service Award
7 years of experience
Free onsite estimate

With over 20 years of experience, Northwest Builders & Renovation delivers top-quality roofing, siding, decks, gutters, and remodeling services across Seatac, WA, Portland, the East San Francisco Bay Area, and San Diego. Licensed and trusted, our team brings innovation, craftsmanship, and integrity to every project — from custom remodels to complete home transformations. 📍 Seatac, WA | Portland, OR | East Bay, CA | San Diego, CA 📞 WA (206) 350-6331 | OR (503) 713-6048 | CA (925) 407-4616 / (442) 291-2226

"I recently had the pleasure of replacing my roof with Isaac, Jonathan, and their team, and I couldn't be more pleased with the outcome. They were really nice, professional, and on time from beginning to end. They went above and beyond by guiding me through the insurance procedure and making sure I received full compensation for the damage. The entire procedure was stress-free thanks to their support and outstanding communication."

Govend S on May 2025

With over 20 years of experience, Northwest Builders & Renovation delivers top-quality roofing, siding, decks, gutters, and remodeling services across Seatac, WA, Portland, the East San Francisco Bay Area, and San Diego. Licensed and trusted, our team brings innovation, craftsmanship, and integrity to every project — from custom remodels to complete home transformations. 📍 Seatac, WA | Portland, OR | East Bay, CA | San Diego, CA 📞 WA (206) 350-6331 | OR (503) 713-6048 | CA (925) 407-4616 / (442) 291-2226

"I recently had the pleasure of replacing my roof with Isaac, Jonathan, and their team, and I couldn't be more pleased with the outcome. They were really nice, professional, and on time from beginning to end. They went above and beyond by guiding me through the insurance procedure and making sure I received full compensation for the damage. The entire procedure was stress-free thanks to their support and outstanding communication."

Govend S on May 2025

Avatar for Tech Line Construction, Inc.

Tech Line Construction, Inc.

5.00(
13
)
•Approved Pro

Tech Line Construction, Inc.

5.00(
13
)
•Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

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

"Tech Line Construction was easy to work with. They showed up when scheduled and finished the project as discussed. The workmanship was solid, and communication was consistent throughout."

lio m on December 2025

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

"Tech Line Construction was easy to work with. They showed up when scheduled and finished the project as discussed. The workmanship was solid, and communication was consistent throughout."

lio m on December 2025

Avatar for Bear Remodeling, Inc.

Bear Remodeling, Inc.

4.93(
21
)
•Approved Pro

Bear Remodeling, Inc.

4.93(
21
)
•Approved Pro
Super Service Award
Customers say: Quality work
7 years of experience
Free onsite estimate

BEAR Remodeling is a full-service design-build contractor specializing in homeowners projects that are planning larger renovations and that require expert designing, permitting , and quality craftsmanship from start to finish. ADU's, additons, Garage Conversions, Loft and Basement conversions, and Full Kitchen and Full Bathrooms- If you do not see your project listed * Please call us!! 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 (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

BEAR Remodeling is a full-service design-build contractor specializing in homeowners projects that are planning larger renovations and that require expert designing, permitting , and quality craftsmanship from start to finish. ADU's, additons, Garage Conversions, Loft and Basement conversions, and Full Kitchen and Full Bathrooms- If you do not see your project listed * Please call us!! 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 (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 BEAR Remodeling Inc.

BEAR Remodeling Inc.

4.93(
15
)
•Approved Pro

BEAR Remodeling Inc.

4.93(
15
)
•Approved Pro
Super Service Award
Customers say: Quick response
9 years of experience
Free onsite estimate

BEAR Remodeling is a full-service design-build contractor specializing in homeowners projects that are planning larger renovations and that require expert designing, permitting , and quality craftsmanship from start to finish. ADU's, additons, Garage Conversions, Loft and Basement conversions, and Full Kitchen and Full Bathrooms- If you do not see your project listed * Please call us!! 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 (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

BEAR Remodeling is a full-service design-build contractor specializing in homeowners projects that are planning larger renovations and that require expert designing, permitting , and quality craftsmanship from start to finish. ADU's, additons, Garage Conversions, Loft and Basement conversions, and Full Kitchen and Full Bathrooms- If you do not see your project listed * Please call us!! 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 (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 Build Atlas

Build Atlas

4.96(
13
)
•Approved Pro

Build Atlas

4.96(
13
)
•Approved Pro
Super Service Award
Customers say: Quick response
18 years of experience
Free onsite estimate

Build Atlas is a dual-licensed, family-owned, construction company specializing in asphalt shingle roofing and residential general contracting. We take pride in our commitment to process, excellence, and integrity—bringing your vision to life with craftsmanship you can count on. From start to finish we ensure that you are brought up to speed, kept in the loop, and consulted on the big things. Your trust is our top priority. With a team of only the best, we’re here to offer you an abundance of knowledge in our construction partnership. Ready to reroof or remodel your home? Let’s build something great together. Reach out for your complimentary estimate today. Build Atlas Guided by Process. Driven by Integrity. Delivered with Excellence.

"I had a great experience working with this roofing company. From start to finish, the team was professional, organized, and efficient. The quality of the work definitely met my expectations, and I was impressed with how quickly they completed the entire reroofing project without cutting any corners. Communication was clear throughout the process, and they kept me updated on each step, which I really appreciated. There was a small delay in the delivery of some materials (not their fault), but they handled it quickly and kept things moving. If you’re looking for reliable and quality roofing work, I would definitely recommend them. It’s refreshing to see a company that values both speed and quality without trying to endlessly price gouge me — (had to deal with a few others before I found them :\)"

Al W on May 2025

Build Atlas is a dual-licensed, family-owned, construction company specializing in asphalt shingle roofing and residential general contracting. We take pride in our commitment to process, excellence, and integrity—bringing your vision to life with craftsmanship you can count on. From start to finish we ensure that you are brought up to speed, kept in the loop, and consulted on the big things. Your trust is our top priority. With a team of only the best, we’re here to offer you an abundance of knowledge in our construction partnership. Ready to reroof or remodel your home? Let’s build something great together. Reach out for your complimentary estimate today. Build Atlas Guided by Process. Driven by Integrity. Delivered with Excellence.

"I had a great experience working with this roofing company. From start to finish, the team was professional, organized, and efficient. The quality of the work definitely met my expectations, and I was impressed with how quickly they completed the entire reroofing project without cutting any corners. Communication was clear throughout the process, and they kept me updated on each step, which I really appreciated. There was a small delay in the delivery of some materials (not their fault), but they handled it quickly and kept things moving. If you’re looking for reliable and quality roofing work, I would definitely recommend them. It’s refreshing to see a company that values both speed and quality without trying to endlessly price gouge me — (had to deal with a few others before I found them :\)"

Al W on May 2025

Avatar for Ovation Restoration, LLC

Ovation Restoration, LLC

4.72(
78
)
•Approved Pro

Ovation Restoration, LLC

4.72(
78
)
•Approved Pro
Customers say: True professional
29 years of experience
Free onsite estimate

With over 20 years of experience serving Washington and Oregon , Ovation Restoration, LLC is the solution for all your construction needs. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed there will be no question on who to call. Our master craftsmen are highly skilled in kitchen and bathroom remodeling, carpet and flooring, roofing, room additions, siding removal and installation, decking, and more!

"Ovation Restoration did an excellent job with our home improvement project. In our master bedroom, to take advantage of a fantastic view, they removed a large window from one wall, sealing it up like new, and installed a similar window on another wall. The work was performed quickly and skillfully, with great results. They also turned the double door leading into that room into a single door, creating more space in the room. Concurrently, in the guest bathroom, the old tub was removed, and a beautiful walk-in tiled shower was installed, along with a window with a fantastic view. The project manager Rick was a pleasure to work with, and his team were all professional, conscientious, and friendly. Everything turned out just as we imagined. We would highly recommend Ovation Restoration."

Ken B on November 2025

With over 20 years of experience serving Washington and Oregon , Ovation Restoration, LLC is the solution for all your construction needs. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed there will be no question on who to call. Our master craftsmen are highly skilled in kitchen and bathroom remodeling, carpet and flooring, roofing, room additions, siding removal and installation, decking, and more!

"Ovation Restoration did an excellent job with our home improvement project. In our master bedroom, to take advantage of a fantastic view, they removed a large window from one wall, sealing it up like new, and installed a similar window on another wall. The work was performed quickly and skillfully, with great results. They also turned the double door leading into that room into a single door, creating more space in the room. Concurrently, in the guest bathroom, the old tub was removed, and a beautiful walk-in tiled shower was installed, along with a window with a fantastic view. The project manager Rick was a pleasure to work with, and his team were all professional, conscientious, and friendly. Everything turned out just as we imagined. We would highly recommend Ovation Restoration."

Ken B on November 2025

Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

4.88(
38
)
•Approved Pro

Prosper Construction Development, Inc.

4.88(
38
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
13 years of experience

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 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!

"Fast response and clear communication throughout the process."

Marco T on April 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 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!

"Fast response and clear communication throughout the process."

Marco T on April 2025

Avatar for West Peak Builders, Inc.

West Peak Builders, Inc.

4.96(
36
)
•Approved Pro

West Peak Builders, Inc.

4.96(
36
)
•Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
3 years of experience

We are a locally owned and operated company with over 16 years of industry experience. We specialize in Additions and Kitchen & Bathroom Remodels, but also offer a wide range of expertise for a variety of other Home Improvement 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 are a bilingual company, and are happy to serve both our English and Spanish speaking communities!

"Timely. Professional. Hardworking. Amazing. That would be a nice maintenance."

nancy a on May 2024

We are a locally owned and operated company with over 16 years of industry experience. We specialize in Additions and Kitchen & Bathroom Remodels, but also offer a wide range of expertise for a variety of other Home Improvement 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 are a bilingual company, and are happy to serve both our English and Spanish speaking communities!

"Timely. Professional. Hardworking. Amazing. That would be a nice maintenance."

nancy a on May 2024

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FAQs for basement remodeling projects in Concord, CA

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Concord, CA homeowners’ guide to basement remodelings

From average costs to expert advice, get all the answers you need to get your job done.

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