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Foundation, basement or crawlspace waterproofing / encapsulation pros in Los Altos

Avatar for Groundworks
Groundworks
1161 N Fair Oaks Ave
4.67(
3
)
Approved Pro
Groundworks
1161 N Fair Oaks Ave
4.67(
3
)
Approved Pro
46 local quotes requested
2 years of experience

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.

"The Groundworks folks (formerly Bay Area Underpinning) applied their foundation-underpinning technology and expertise to extend to bedrock, level, square up the foundation for an extensive house remodel. I was most impressed by the young man onsite supervisor, Josh who answered all my work done, how and why questions. I wish this info was provided up front by the estimator. (My design-build remodel contractor referred this company). "

Suzanne R on March 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.

"The Groundworks folks (formerly Bay Area Underpinning) applied their foundation-underpinning technology and expertise to extend to bedrock, level, square up the foundation for an extensive house remodel. I was most impressed by the young man onsite supervisor, Josh who answered all my work done, how and why questions. I wish this info was provided up front by the estimator. (My design-build remodel contractor referred this company). "

Suzanne R on March 2025


Avatar for Foundation Repair of CA
Foundation Repair of CA
1813 Rutan Drive Suite A
5.00(
2
)
Approved Pro
Foundation Repair of CA
1813 Rutan Drive Suite A
5.00(
2
)
Approved Pro
Customers say: Quick response
71 local quotes requested
14 years of experience

At Foundation Repair of CA, we specialize in stabilizing homes and businesses throughout Northern California. We specialize in primary foundation damage repair of all types. We provide solutions for failing foundations, including sinking or settling foundations, sagging crawl space, crawl space encapsulation and insulation, and earthquake retrofitting. Our expertise also includes concrete restoration, which incorporates concrete lifting and leveling of slabs, driveways, walkways and pool decks, and more! We pride ourselves in providing free, no obligation foundation repair quotes for homeowners within our service area. Protect your home or business. Call us today.

"All around good experience"

Tat H on August 2023

At Foundation Repair of CA, we specialize in stabilizing homes and businesses throughout Northern California. We specialize in primary foundation damage repair of all types. We provide solutions for failing foundations, including sinking or settling foundations, sagging crawl space, crawl space encapsulation and insulation, and earthquake retrofitting. Our expertise also includes concrete restoration, which incorporates concrete lifting and leveling of slabs, driveways, walkways and pool decks, and more! We pride ourselves in providing free, no obligation foundation repair quotes for homeowners within our service area. Protect your home or business. Call us today.

"All around good experience"

Tat H on August 2023


RSF Construction Inc.
6910 Monte Verde Drive
New on HomeAdvisorNew on Angi
Approved Pro
RSF Construction Inc.
6910 Monte Verde Drive
New on AngiNew on HomeAdvisor
Approved Pro
219 local quotes requested
6 years of experience

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 Groundworks
Groundworks
1161 N Fair Oaks Ave
3.00(
4
)
Approved Pro
Groundworks
1161 N Fair Oaks Ave
3.00(
4
)
Approved Pro
61 local quotes requested
20 years of experience

In 2005, Steven and Kelly Egloff founded Bay Area Underpinning with the goal of providing a cost-effective, engineered solution to foundation settlement problems with an emphasis on educating customers. In 2023, BAU partnered with Groundworks, the nation’s leading and fastest growing foundation repair and water management solutions provider, to offer the best products in the industry and provide elite business management resources to their employees. BAU will now operate under the Groundworks name, while continuing to improve the customer experience and provide expertise and guidance from San Jose to Sacramento. Schedule your FREE inspection today!

"went horrible 2 week job took 7 months"

Cat D on April 2025

In 2005, Steven and Kelly Egloff founded Bay Area Underpinning with the goal of providing a cost-effective, engineered solution to foundation settlement problems with an emphasis on educating customers. In 2023, BAU partnered with Groundworks, the nation’s leading and fastest growing foundation repair and water management solutions provider, to offer the best products in the industry and provide elite business management resources to their employees. BAU will now operate under the Groundworks name, while continuing to improve the customer experience and provide expertise and guidance from San Jose to Sacramento. Schedule your FREE inspection today!

"went horrible 2 week job took 7 months"

Cat D on April 2025


GreenTree & Land
123 Main St.
5.00(
1
)
Approved Pro
GreenTree & Land
123 Main St.
5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
160 local quotes requested

We specialize in landscaping and tree services. Emergency services available. We pride ourselves on the quality work we provide, while delivering great customer service. Call -or- click to schedule an estimate today!

"They are very fast, effecient and easy to work with. I highly recommend them."

Frank F on January 2022

We specialize in landscaping and tree services. Emergency services available. We pride ourselves on the quality work we provide, while delivering great customer service. Call -or- click to schedule an estimate today!

"They are very fast, effecient and easy to work with. I highly recommend them."

Frank F on January 2022


Avatar for Rock N Block - Turf N Hardscapes Santa Clara
Rock N Block - Turf N Hardscapes Santa Clara
2100 S Bascom Ave Ste 1 #524
New on HomeAdvisorNew on Angi
Approved Pro
Rock N Block - Turf N Hardscapes Santa Clara
2100 S Bascom Ave Ste 1 #524
New on AngiNew on HomeAdvisor
Approved Pro
358 local quotes requested
20 years of experience

Rock N Block Landscape takes great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality regardless of how large or small the job.

Rock N Block Landscape takes great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality regardless of how large or small the job.


Avatar for Mejia Landscaping Inc
Mejia Landscaping Inc
5.00(
2
)
Approved Pro
Mejia Landscaping Inc
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
260 local quotes requested

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work.As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"They did a excellent job and we were pleased with their service!"

Allan P on September 2023

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work.As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"They did a excellent job and we were pleased with their service!"

Allan P on September 2023


Avatar for ABOVE THE CUT
ABOVE THE CUT
344 South Baywood Avenue
New on HomeAdvisorNew on Angi
Approved Pro
ABOVE THE CUT
344 South Baywood Avenue
New on AngiNew on HomeAdvisor
Approved Pro
562 local quotes requested
25 years of experience

Welcome to Above The Cut! We look forward to serving you!

Welcome to Above The Cut! We look forward to serving you!


Avatar for V&M Landscaping
V&M Landscaping
1065 San Felipe Rd
5.00(
13
)
Approved Pro
V&M Landscaping
1065 San Felipe Rd
5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
473 local quotes requested

We are a family owned business that offers solutions for landscaping, paving, hardscaping and more. We offer the best work at the best price. We take our profession seriously and are fully licensed and insured.

"Great! Great job, stayed on task, design and install, kept in constant communication. Highly recommend using V&M!!"

David M on March 2024

We are a family owned business that offers solutions for landscaping, paving, hardscaping and more. We offer the best work at the best price. We take our profession seriously and are fully licensed and insured.

"Great! Great job, stayed on task, design and install, kept in constant communication. Highly recommend using V&M!!"

David M on March 2024


Avatar for AGS Landscape
AGS Landscape
2764 Othello Avenue
4.91(
46
)
Approved Pro
AGS Landscape
2764 Othello Avenue
4.91(
46
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
662 local quotes requested

Enjoy a beautiful looking yard with our professional services that everyone will admire! We do it all, from Paver, synthetic lawn, fencing, irrigation, concrete, lighting, maintenance, and so much more!

"They were great, friendly and fast!"

Sabrina U on May 2025

Enjoy a beautiful looking yard with our professional services that everyone will admire! We do it all, from Paver, synthetic lawn, fencing, irrigation, concrete, lighting, maintenance, and so much more!

"They were great, friendly and fast!"

Sabrina U on May 2025

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FAQs for foundation, basement or crawlspace waterproofing / encapsulation projects in Los Altos, CA

Standing water in your crawl space won’t disappear on its own. Keep the drainage clear, ensure the vents are working properly, and run a dehumidifier to control moisture levels. If dampness lingers, mold, wood rot, and foundation cracks can follow. Act quickly and call a pro to protect your home’s structure and indoor air quality.

Disinfecting a crawl space requires a methodical approach. First, clear all debris and remove old liners and insulation to eliminate contaminants. Then, apply a strong bleach solution or borate spray to eradicate mold spores and mildew. Ensuring complete surface coverage and allowing ample drying time establishes a sanitary environment and prevents future infestations.

A crawl space serves vital functions by providing access to essential systems, including electrical wiring, plumbing, and HVAC ducts. It also offers a buffer zone that aids in moisture control and protects underlying structural components. 

Yes, crawl space encapsulation is a worthwhile investment in protecting your home. Crawl space encapsulation locks out moisture, controls humidity, and blocks pests and harmful pollutants like radon gas. Those benefits boost indoor air quality and protect beams, joists, and insulation, giving your home long‑term structural stability and safeguarding your family’s health.

Prevention is the best way to keep water out of your crawl space. A dehumidifier and sump pump can help control moisture levels, but grading the landscape to redirect water away from the foundation is most important. Additionally, seal foundation cracks and install reliable drainage systems such as a French drain to maintain a consistently dry environment.

Yes, repairing your crawl space foundation is critical, regardless of how minor the issue may seem. Foundation problems arise from enduring moisture, water intrusion, and unstable soil, which can lead to significant structural damage if left unaddressed. Hiring a licensed structural engineer or foundation repair professional guarantees your home’s long-term stability and safety while preventing escalating repair costs.

The Los Altos, CA homeowners’ guide to foundation, basement or crawlspace waterproofing / encapsulations
From average costs to expert advice, get all the answers you need to get your job done.
Empty basement with new concrete floor and white walls
Jun 23, 2025
Jun 23, 2025
How much a foundation costs depends mainly on its size and specific material. This guide can help you plan your project budget.
clean crawlspace with insulation and wood beams under house
Jun 15, 2025
Jun 15, 2025
Budget for crawl space repair costs based on factors such as square footage, repair type, accessibility, cleaning, maintenance, labor, and more.
professional repairing the foundation of a home
Apr 24, 2025
Apr 24, 2025
Budget for foundation repair costs based on factors such as the extent of damage, house size, materials, labor, problem type, and more.
raising the foundation of a home with a house lift
Apr 21, 2025
Apr 21, 2025
Learn how much it costs to raise a house. Explore how factors like the house size, structure, age, landscaping, and labor rates affect the price.
A man digging out a french drain
Jun 24, 2025
Jun 24, 2025
Discover how much it costs to install a French drain based on the size, accessibility, depth, landscape condition, and labor rates.
crawl space prepared for an encapsultion
Mar 20, 2025
Mar 20, 2025
Use this guide to budget for crawl space encapsulation cost factors such as crawl space size, prep, maintenance tasks, labor, and more.
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