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Verified Reviews for Basement Waterproofing pros in Thermal, CA

*The Angi rating for Basement Waterproofing companies in Thermal, 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 Thermal, 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 November 02, 2025

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Avatar for Los Angeles Retrofit & Construction Inc

Los Angeles Retrofit & Construction Inc

18075 Ventura Blvd
5.00(
6
)

Los Angeles Retrofit & Construction Inc

18075 Ventura Blvd
5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We believe our retrofit, remodeling and construction services will give you the best outcome and give you the most value from your property investment. When you work with LARC, you work with the principles of the company from start to finish. Whether you are a concerned home owner, potential home buyer or just want to ask us few questions about your foundation, LARC can help.

We believe our retrofit, remodeling and construction services will give you the best outcome and give you the most value from your property investment. When you work with LARC, you work with the principles of the company from start to finish. Whether you are a concerned home owner, potential home buyer or just want to ask us few questions about your foundation, LARC can help.

Avatar for C & L Construction

C & L Construction

6850 Van Nuys Blvd
4.83(
23
)

C & L Construction

6850 Van Nuys Blvd
4.83(
23
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Home Improvement company. We do kitchens, bathrooms, roofing, painting, windows, new construction, and much more!

"I am so glad I found C &L Construction for my remodel ! The team was always on time , responsive , and worked in the timeline they promised ! I had a complete remodel done for a single family home and their work was flawless!!!"

Ani B on August 2019

Home Improvement company. We do kitchens, bathrooms, roofing, painting, windows, new construction, and much more!

"I am so glad I found C &L Construction for my remodel ! The team was always on time , responsive , and worked in the timeline they promised ! I had a complete remodel done for a single family home and their work was flawless!!!"

Ani B on August 2019

Paramount Remodeling

8549 WILSHIRE BLVD
No reviews yet

Paramount Remodeling

8549 WILSHIRE BLVD
No reviews yet
34 years of experience

Paramount Remodeling provides outstanding services for every project. We are a full service general contractor and focus on providing outstanding service to our clients. We provide the highest professional standards in every project!

Paramount Remodeling provides outstanding services for every project. We are a full service general contractor and focus on providing outstanding service to our clients. We provide the highest professional standards in every project!

Pirate Pilots Construction Company

7223 Agate St.
No reviews yet

Pirate Pilots Construction Company

7223 Agate St.
No reviews yet
9 years of experience

To introduce myself and to let you know of my interest in becoming a part of your remolding Ideas. I assure you that I can successfully fulfill any obligations requiring of any responsibility that you give our company. I have performed my assignments with a high degree of skill and professionalism. Pirate Pilots Construction Company cuts out the Double charging on materials and saves you lots of money. We at "PPCC" Will only charge the LABOR.

To introduce myself and to let you know of my interest in becoming a part of your remolding Ideas. I assure you that I can successfully fulfill any obligations requiring of any responsibility that you give our company. I have performed my assignments with a high degree of skill and professionalism. Pirate Pilots Construction Company cuts out the Double charging on materials and saves you lots of money. We at "PPCC" Will only charge the LABOR.

Avatar for S Visions Construction Inc

S Visions Construction Inc

21512 Nordhoff St.
No reviews yet

S Visions Construction Inc

21512 Nordhoff St.
No reviews yet
21 years of experience

S Visions Construction Inc. specializes in producing creative, functional, and stunning custom designs. We want to bring your idea to fruition, and no job is too big or too small. Let us help you with all your construction needs.

S Visions Construction Inc. specializes in producing creative, functional, and stunning custom designs. We want to bring your idea to fruition, and no job is too big or too small. Let us help you with all your construction needs.

Sherman's Plumbing and Constuction

30623 Jedediah Smith Rd
No reviews yet

Sherman's Plumbing and Constuction

30623 Jedediah Smith Rd
No reviews yet
35 years of experience

Sherman's Plumbing and construction has been servicing the Inland Empire and Orange County for over 25 years. Currently operating 4 service trucks for quick resolutions to your home problems. We offer quality service with unbeatable prices. There are no jobs too big or small for Sherman's Plumbing. Call Sherman's today for a FREE assessment.

Sherman's Plumbing and construction has been servicing the Inland Empire and Orange County for over 25 years. Currently operating 4 service trucks for quick resolutions to your home problems. We offer quality service with unbeatable prices. There are no jobs too big or small for Sherman's Plumbing. Call Sherman's today for a FREE assessment.

Avatar for Built Strong Construction

Built Strong Construction

14431 Ventura Blvd
5.00(
22
)

Built Strong Construction

14431 Ventura Blvd
5.00(
22
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Built Strong Foundation Repair is a leading foundation repair company with locations in Los Angeles and Orange County. We service the majority of Southern California. We specialize in services such as foundation repair, foundation replacement, structural engineering, house leveling, earthquake retrofitting, house underpinning, caisson work, slab foundation repair, foundation crack repair and many more services to save your home. Foundation Repair Specialists.

"We had our home earthquake bolted. The work was completed in 1 day!! They did a fantastic job and the city inspector complimented on they’re workmanship! Thank you built strong!"

Garry D on March 2018

Built Strong Foundation Repair is a leading foundation repair company with locations in Los Angeles and Orange County. We service the majority of Southern California. We specialize in services such as foundation repair, foundation replacement, structural engineering, house leveling, earthquake retrofitting, house underpinning, caisson work, slab foundation repair, foundation crack repair and many more services to save your home. Foundation Repair Specialists.

"We had our home earthquake bolted. The work was completed in 1 day!! They did a fantastic job and the city inspector complimented on they’re workmanship! Thank you built strong!"

Garry D on March 2018

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Basement Waterproofing questions, answered by experts

A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.

Although waterproofing your basement may not directly increase the value of your home, it will protect the value you already have by preventing water damage. A basement without any signs of water will be more appealing to prospective home buyers. A leaky basement is a major red flag during a home inspection, and it will likely reduce the amount that buyers are willing to pay.

Many prevention methods can be used individually or in combination to waterproof your basement. Some of the most common waterproofing methods include:

  • Using dehumidifiers 

  • Silicate concrete sealers

  • Vapor barriers 

  • Baseboard channels 

  • Drain tile systems

  • Waterproofing paint

  • Drainage systems

  • Epoxy injection

  • Interior French drains

  • Exterior excavation and waterproofing

  • Cement waterproofing

  • Weep tiles

  • Liquid membrane

  • Sheet membrane 

  • Yard grading

  • Gutters and downspouts

Yes, it’s worth it to repair a crawl space foundation, even if the issue seems relatively minor. Foundation problems often get worse and more expensive to fix if you leave them untreated. Additionally, your entire home, from the framing and flooring to the roof system, relies on the foundation for even and level support. Issues with your foundation will almost always manifest as problems in and above your living space, so it’s important to find a solution.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

The Thermal, 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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