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Avatar for Groundworks

Groundworks

4.67(
12
)
•Approved Pro

Groundworks

4.67(
12
)
•Approved Pro
Customers say: Quality work
20 years of experience
Free onsite estimate

Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today! 1116054

"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."

Dominick M on June 2025

Groundworks, formerly Bay Area Underpinning, specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento and San Jose areas. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation. Schedule your FREE inspection today! 1116054

"We hired Groundworks CA (fka Bay Area Underpinning) for what we understood was a full foundation repair. We paid $42K. They only worked on the rear and never informed us that the front wasn’t included. Months later, while selling our home, a third-party engineer found $189K in unaddressed issues at the front. We were blindsided, lost our buyer, and suffered major financial and emotional stress. Groundworks later admitted they hadn’t measured the front. Their rushed “final inspection” months later felt reactive, not professional. When asked for a partial refund, they refused. We feel misled and abandoned. Avoid."

Dominick M on June 2025

Avatar for Groundworks

Groundworks

5.00(
4
)
•Approved Pro

Groundworks

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

Groundworks specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"Juan G was the Forman and Mike was our Piering crew. They were able to put in 7 jacks and complete the job within 1 week! I really appreciated how Juan kept me informed about the job and how they always left their work areas clean and tidy."

Kristina S on December 2025

Groundworks specializes in helping homeowners with their residential and commercial foundation repair and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across the Sacramento area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"Juan G was the Forman and Mike was our Piering crew. They were able to put in 7 jacks and complete the job within 1 week! I really appreciated how Juan kept me informed about the job and how they always left their work areas clean and tidy."

Kristina S on December 2025

RSF Construction Inc.

New on AngiNew on Angi
•Approved Pro

RSF Construction Inc.

New on AngiNew on Angi
•Approved Pro
6 years of experience
Free onsite estimate

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Avatar for Garage Experts Of Sacramento

Garage Experts Of Sacramento

5.00(
25
)

Garage Experts Of Sacramento

5.00(
25
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

We provide professional installation of commercial and residential epoxy flooring and storage solutions. Our service area stretches from North of Lake Tahoe to areas in and around San Jose and Santa Cruz. We travel for work!! We offer various types of lifetime warrantied epoxy flooring (multi-layer build-ups of "speckled" and metallic fleck) and lifetime warrantied cabinetry, slat wall and overhead racks. coatings and metallic fleck suspended in clear epoxy). Garage Experts has an enormous client base of garage makeover customers. In addition, we provide concrete makeovers (Capping, Stamping, Staining, Resurfacing, Etching, etc). We can provide unique, durable custom counter tops too.

"From start to finish it was a very pleasant experience. The workers who came out to a simple the cabinets and put on the Apoxsee floor were very professional and courteous. I would highly recommend them to anybody who wants epoxy flooring or cabinets."

jay f on February 2021

We provide professional installation of commercial and residential epoxy flooring and storage solutions. Our service area stretches from North of Lake Tahoe to areas in and around San Jose and Santa Cruz. We travel for work!! We offer various types of lifetime warrantied epoxy flooring (multi-layer build-ups of "speckled" and metallic fleck) and lifetime warrantied cabinetry, slat wall and overhead racks. coatings and metallic fleck suspended in clear epoxy). Garage Experts has an enormous client base of garage makeover customers. In addition, we provide concrete makeovers (Capping, Stamping, Staining, Resurfacing, Etching, etc). We can provide unique, durable custom counter tops too.

"From start to finish it was a very pleasant experience. The workers who came out to a simple the cabinets and put on the Apoxsee floor were very professional and courteous. I would highly recommend them to anybody who wants epoxy flooring or cabinets."

jay f on February 2021

Avatar for B A Morrison

B A Morrison

4.77(
79
)

B A Morrison

4.77(
79
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

B.A. Morrison is a family-owned Heating, Ventilation, Air-Conditioning (HVAC) and General Construction company. We have been in business since 1990 and are fully insured and bonded. Our employees are experienced, trustworthy, and honest tradesmen. We are ready to meet your needs in a timely scheduled manner, to your satisfaction, and at a fair price. We offer free estimates for regularly scheduled maintenance of your HVAC equipment, new and replacement HVAC equipment installation, and your general construction needs. Please consider our service, installation, replacement, or home improvement and remodeling services the next time you have a need for your residential or commercial building.

B.A. Morrison is a family-owned Heating, Ventilation, Air-Conditioning (HVAC) and General Construction company. We have been in business since 1990 and are fully insured and bonded. Our employees are experienced, trustworthy, and honest tradesmen. We are ready to meet your needs in a timely scheduled manner, to your satisfaction, and at a fair price. We offer free estimates for regularly scheduled maintenance of your HVAC equipment, new and replacement HVAC equipment installation, and your general construction needs. Please consider our service, installation, replacement, or home improvement and remodeling services the next time you have a need for your residential or commercial building.

Ned Clyde Construction Inc

4.84(
68
)

Ned Clyde Construction Inc

4.84(
68
)
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Foundation and leveling specialists serving the entire bay area. Licensed, bonded and insured with 30 years of experience. We have licensed geologists, civil and geotechnical engineers on staff, so there's generally no need for outside consultants. Please call the office at 925-689-5411 to talk to an engineer and schedule an appointment.

"Engineer responded within my time frame. He provided the report I needed quickly."

Stephen S on August 2018

Foundation and leveling specialists serving the entire bay area. Licensed, bonded and insured with 30 years of experience. We have licensed geologists, civil and geotechnical engineers on staff, so there's generally no need for outside consultants. Please call the office at 925-689-5411 to talk to an engineer and schedule an appointment.

"Engineer responded within my time frame. He provided the report I needed quickly."

Stephen S on August 2018

Avatar for Mulhall Construction

Mulhall Construction

4.86(
50
)

Mulhall Construction

4.86(
50
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

We do not do small scale projects, We specialize in Foundation Replacements, Soft Story retrofits and Seismic upgrades

We do not do small scale projects, We specialize in Foundation Replacements, Soft Story retrofits and Seismic upgrades

Avatar for Benjamin Construction, Inc.

Benjamin Construction, Inc.

5.00(
5
)

Benjamin Construction, Inc.

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Benjamin Construction provides​ a wide range of residential and commercial construction services for clients throughout the Lafayette Area handling everything from kitchen and bathroom remodeling to addition and custom home building. In addition to its new construction and remodeling services, the company designs and build high-end custom cabinetry, install tile and stone, replace windows, build decks and fences, and more. Owner-operator Benjamin Dumitrascuta is a second-generation building professional—his father, Gelu, established his own construction company in the 1980s after emigrating from Eastern Europe and taught his son the trade at a very young age. “He instilled in me the importance of quality craftsmanship, and that remains my number one objective today,” says Mr. Dumitrascuta. Benjamin Construction takes a personalized approach to dealing with customers and develops close relationships with them that continue even after their construction projects are finished. “Personal service is an important part of my process,” confirms Mr. Dumitrascuta. “I personally handle all cabinet, finish, tile, framing/carpentry, foundation, electrical and plumbing work in-house, and I’m heavily involved in the design of each project.”

Benjamin Construction provides​ a wide range of residential and commercial construction services for clients throughout the Lafayette Area handling everything from kitchen and bathroom remodeling to addition and custom home building. In addition to its new construction and remodeling services, the company designs and build high-end custom cabinetry, install tile and stone, replace windows, build decks and fences, and more. Owner-operator Benjamin Dumitrascuta is a second-generation building professional—his father, Gelu, established his own construction company in the 1980s after emigrating from Eastern Europe and taught his son the trade at a very young age. “He instilled in me the importance of quality craftsmanship, and that remains my number one objective today,” says Mr. Dumitrascuta. Benjamin Construction takes a personalized approach to dealing with customers and develops close relationships with them that continue even after their construction projects are finished. “Personal service is an important part of my process,” confirms Mr. Dumitrascuta. “I personally handle all cabinet, finish, tile, framing/carpentry, foundation, electrical and plumbing work in-house, and I’m heavily involved in the design of each project.”

Avatar for Sure Safe EFS

Sure Safe EFS

4.75(
40
)

Sure Safe EFS

4.75(
40
)
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

It's important to ensure that the foundation of a house is constructed and maintained properly to guarantee its stability and safety. In earthquake-prone areas like California, poorly positioned homes have frequently collapsed, while those built on Sure Safe Foundations have remained undamaged.

"This team arrived for work in the morning, and was complete by lunch. Outside wall repairs on MidCentury Modern, and full assessment to bring house up to modern seismic codes. Great feedback to close out, plus a solid warranty. These folks specialize in crawl space homes and keeping them solid."

Ryan K on February 2022

It's important to ensure that the foundation of a house is constructed and maintained properly to guarantee its stability and safety. In earthquake-prone areas like California, poorly positioned homes have frequently collapsed, while those built on Sure Safe Foundations have remained undamaged.

"This team arrived for work in the morning, and was complete by lunch. Outside wall repairs on MidCentury Modern, and full assessment to bring house up to modern seismic codes. Great feedback to close out, plus a solid warranty. These folks specialize in crawl space homes and keeping them solid."

Ryan K on February 2022

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Verified Reviews for Basement Waterproofing pros in Vallejo, CA

*The Angi rating for Basement Waterproofing companies in Vallejo, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Vallejo, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on December 30, 2025

Basement Waterproofing questions, answered by experts

As the first layer of water protection for your roof deck and the building materials below, underlayment is designed to prevent water damage, so it’s okay if it gets wet. However, you shouldn’t rely solely on underlayment for protection. If rain interrupts your roof project and you have all of the underlayment down, you’ll likely be fine, but you should install shingles over that layer as soon as possible, as long-term exposure can lead to water damage.

You’ll need to reseal the foundation every five to 10 years, depending on the sealant you’ve used, the moisture conditions present in and around your home, and the condition of your foundation. Having a foundation inspection conducted before reapplication can help you catch any problems before you begin resealing. Of course, if you notice any new leaks or other moisture problems at any time, it may be necessary to reseal the foundation sooner.

To ensure your basement walls are waterproof, it's crucial to address any existing moisture issues before finishing. Inspect for signs of water seepage, such as dampness or discoloration, and repair any leaks or cracks. Install a vapor barrier to prevent moisture from penetrating the walls, and consider waterproofing paints or coatings.

Proper drainage systems, such as interior or exterior waterproofing, can also be beneficial.

Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:

  • Water in your basement, including damp walls or puddles on the floor

  • Mold spots in your basement

  • Musty smells or odors

  • Warped doors or walls

  • Cracks in walls

  • Insect issues, such as cockroaches and termites

Mold and mildew are always a primary risk with any water damage, but it’s not guaranteed that mold will grow. The chances of mold growth are dependent on many factors, such as the severity of the damage and how quickly the area was cleaned up and dried out—that’s why responding to water damage immediately is imperative. If you suspect you have mold and mildew growth, you should talk to a local mold removal expert .

The Vallejo, CA homeowners’ guide to basement waterproofing services

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

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