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Find Basement remodelers in El Sobrante

Avatar for E&J Builders Inc

E&J Builders Inc

5.00(
3
)
Approved Pro

E&J Builders Inc

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

E & J Builders was founded by husband and wife team Eric & Jane Sterken. E & J Builders is dedicated to providing quality craftsmanship, clear communication, fair prices, and a really positive attitude! We know there are many things to consider when choosing a contractor: capabilities, schedule, cost and good communication. It’s important to choose someone you feel comfortable working with and having in your home.

"We did a massive home remodel with Eric and his team at E&J, and they were phenomenal. The scope of the project was bigger than we expected, and we were in over our heads, and Eric helped at each step of the way. He worked closely with our architect and the city inspectors to finish up our beautiful home. I've recommended him to a number of friends. Their bid was well below the others we got, and they really delivered. It was to the studs/new foundation in almost half the house, the scope was across new bathrooms, kitchen, bedrooms, windows, floors, electrical plumbing, attic, roof deck and more. He managed all the complexity and subcontractors. Not only has he stood by all the work to make sure all the details were right, but he's just a genuinely nice and wonderful person who is a pleasure to work with. Highly recommend him and his team."

Ben F on April 2024

E & J Builders was founded by husband and wife team Eric & Jane Sterken. E & J Builders is dedicated to providing quality craftsmanship, clear communication, fair prices, and a really positive attitude! We know there are many things to consider when choosing a contractor: capabilities, schedule, cost and good communication. It’s important to choose someone you feel comfortable working with and having in your home.

"We did a massive home remodel with Eric and his team at E&J, and they were phenomenal. The scope of the project was bigger than we expected, and we were in over our heads, and Eric helped at each step of the way. He worked closely with our architect and the city inspectors to finish up our beautiful home. I've recommended him to a number of friends. Their bid was well below the others we got, and they really delivered. It was to the studs/new foundation in almost half the house, the scope was across new bathrooms, kitchen, bedrooms, windows, floors, electrical plumbing, attic, roof deck and more. He managed all the complexity and subcontractors. Not only has he stood by all the work to make sure all the details were right, but he's just a genuinely nice and wonderful person who is a pleasure to work with. Highly recommend him and his team."

Ben F on April 2024


Avatar for Calsystem Restoration Services, Inc.

Calsystem Restoration Services, Inc.

5.00(
2
)
Approved Pro

Calsystem Restoration Services, Inc.

5.00(
2
)
Approved Pro
23 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. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. 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 guaranteeing your satisfaction!

"My kitchen was in serious need of a remodel; I was able to find Calsystem Restoration Services online and they were great and easy to deal with from start to finish. I explained to them how I wanted to modernize my kitchen and with some suggestions and help from their main consultant Tony; we were able to make it happen. Highly recommend these guys to anyone, wouldn't hesitate to contact them again for any home renovation needs. I attached some photos below of what my kitchen looked like upon completion, thanks again!"

David A on May 2025

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. 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 guaranteeing your satisfaction!

"My kitchen was in serious need of a remodel; I was able to find Calsystem Restoration Services online and they were great and easy to deal with from start to finish. I explained to them how I wanted to modernize my kitchen and with some suggestions and help from their main consultant Tony; we were able to make it happen. Highly recommend these guys to anyone, wouldn't hesitate to contact them again for any home renovation needs. I attached some photos below of what my kitchen looked like upon completion, thanks again!"

David A on May 2025


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
12 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


Avatar for UNITED C CONSTRUCTION, INC

UNITED C CONSTRUCTION, INC

5.00(
3
)
Approved Pro

UNITED C CONSTRUCTION, INC

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

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

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 2024

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!

"Updating our home was a dream we have had for years. But finding a good contractor in Bay Area was so difficult, that we almost gave up. We were introduced to United C Construction by our architect(who we also love!) It was exhausting trying to find someone trustworthy and not overpriced. We had luck of working with Osmar which during the project we had clear communication, expectation of setting, professionalism and superior craftsmanship. He walked us through every step of the way, and helped problem solve tough permitting and structural issues in Berkeley!"

Shelby R on September 2024


Avatar for Build Lamorinda

Build Lamorinda

5.00(
7
)
Approved Pro

Build Lamorinda

5.00(
7
)
Approved Pro
Super Service Award
Customers say: Quick response
32 years of experience

Thank you for considering Build Lamorinda for your building and handyman needs. We have extensive knowledge of building and maintenance in the Lamorinda area. We offer hourly rates starting at 85.00 an hour and charge a minimum of 4 hours for projects. We do not charge for consultation but do charge 150.00 for bidding and estimates for large projects. Our reviews speak for themselves and we treat all our projects as if they were our own. Please feel free to reach out to us via email, call or text. Happy Holidays Rick@buildlamorinda.com 415-235-7425

"Rick is a true professional. Handles all aspects of your project thoroughly and efficiently. Responds promptly to your needs and addresses issues quickly. I am very happy I chose Build Lamorinda, you will too! Patrick McKenna "

Patrick M on October 2025

Thank you for considering Build Lamorinda for your building and handyman needs. We have extensive knowledge of building and maintenance in the Lamorinda area. We offer hourly rates starting at 85.00 an hour and charge a minimum of 4 hours for projects. We do not charge for consultation but do charge 150.00 for bidding and estimates for large projects. Our reviews speak for themselves and we treat all our projects as if they were our own. Please feel free to reach out to us via email, call or text. Happy Holidays Rick@buildlamorinda.com 415-235-7425

"Rick is a true professional. Handles all aspects of your project thoroughly and efficiently. Responds promptly to your needs and addresses issues quickly. I am very happy I chose Build Lamorinda, you will too! Patrick McKenna "

Patrick M on October 2025


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
23 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 Griggs Construction

Griggs Construction

4.88(
4
)
Approved Pro

Griggs Construction

4.88(
4
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

Top quality work and your satisfaction are our priorities. We understand that your home is your castle, and pride ourselves in delivering the results you want reliably and with integrity. As experts in our trade, we know the importance of keeping you informed at every stage of your project, in a timely and always honest manner. Give us a call today and let’s talk about how we can make your dreams a reality! We look forward to earning your business!

"Good, but may be slow to respond on followup projects"

Jan K on June 2021

Top quality work and your satisfaction are our priorities. We understand that your home is your castle, and pride ourselves in delivering the results you want reliably and with integrity. As experts in our trade, we know the importance of keeping you informed at every stage of your project, in a timely and always honest manner. Give us a call today and let’s talk about how we can make your dreams a reality! We look forward to earning your business!

"Good, but may be slow to respond on followup projects"

Jan K on June 2021


Avatar for BE HOME REMODELING INC

BE HOME REMODELING INC

4.96(
12
)
Approved Pro

BE HOME REMODELING INC

4.96(
12
)
Approved Pro
Super Service Award
Customers say: Quick response
557 local quotes requested
2 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.

"After they redid our counter tops and island, we had them paint out cabinets and build shelves up to the ceiling. The communication was on point this time and the results speak for themselves. Would definitely recommend them to anyone for any home project. "

Stephen A on December 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.

"After they redid our counter tops and island, we had them paint out cabinets and build shelves up to the ceiling. The communication was on point this time and the results speak for themselves. Would definitely recommend them to anyone for any home project. "

Stephen A on December 2025


Avatar for BEAR Remodeling Inc.

BEAR Remodeling Inc.

4.90(
10
)
Approved Pro

BEAR Remodeling Inc.

4.90(
10
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

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


BE&D Builders

5.00(
1
)
Approved Pro

BE&D Builders

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Free onsite estimate

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"My project was a major renovation of a 1985 Victorian home that suffered a devastating fire. Erik and his team did a beautiful job following my architect’s plans, and was also proactive about calling out necessary changes. He was very patient with all of my changes and very specific requests, and was a very calming influence when unexpected surprises inevitably arose during construction. The final results are beautiful, and an historic house has been saved. I look forward to working with Erik again in the future!"

johanna s on September 2024

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"My project was a major renovation of a 1985 Victorian home that suffered a devastating fire. Erik and his team did a beautiful job following my architect’s plans, and was also proactive about calling out necessary changes. He was very patient with all of my changes and very specific requests, and was a very calming influence when unexpected surprises inevitably arose during construction. The final results are beautiful, and an historic house has been saved. I look forward to working with Erik again in the future!"

johanna s on September 2024

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FAQs for basement remodeling projects in El Sobrante, 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 El Sobrante, CA homeowners’ guide to basement remodelings

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