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Verified Reviews for Basement Waterproofing pros in Riverside, CA

*The Angi rating for Basement Waterproofing companies in Riverside, 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 Riverside, 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 April 27, 2026

Find Basement waterproofing pros in Riverside

Avatar for 21st Century Waterproofing
21st Century Waterproofing
4.7(
28
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

Approved

In business since 1992

Free estimates

Small jobs welcome

"21st Century Waterproofing is the best waterproofing company in the LA area. William Kleeberg knows his stuff and prices his work fairly. Looked all over for a waterproofing company, checked out many companies and found 21st Century Waterproofing to be No. 1"
Response time1 day
Response rate87%
3 neighbors recently requested a quote
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Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
4.6(
241
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Incredibly knowledgeable and trustworthy. Errin gave us a clear understanding concerning our foundation, deck and balcony needs. He was friendly and professional and easy to work with. Great experienced staff!"
Basement Addition
Basement Expansion
Caisson Supported Retaining Wall
Cantilevered Deck Design Build
Deck Expansion and Slope Failure with Retaining Wall

+323

20 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for Saber
Saber
3.8(
161
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

Approved

In business since 1986

Free estimates

Small jobs welcome

"Great customer service and good quality work. They installed two helical wall anchors in a retaining wall in my basement and it looks great."
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation

+29

33 neighbors recently requested a quote
Recommended by67%of homeowners
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Avatar for Groundworks
Groundworks
3.5(
175
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Riverside, CA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Warranties offered

"Their initial price was really high and I declined. But, when they were left with a crew stuck in my area due to a cancelled job, they were really willing to negotiate. The guys were good and did a good job. I'm really happy I had my slab lifted."
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time11 hrs
85 neighbors recently requested a quote
Recommended by38%of homeowners
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Avatar for Regal Plumbing & Rooter
Regal Plumbing & Rooter
5.0(
7
)
Basement Drainage Channels - Install

Serving Riverside, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Nick was amazing and got a big problem done for a reasonable price. He will be my forever plumber now"
Gas line install for space heaters in backyard
Gas line install for space heaters in backyard
Plumbing Project
Gas line install for space heaters in backyard
Plumbing Project

+79

Recommended by71%of homeowners
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RSF Construction Inc.
1.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

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!

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Avatar for Monarch Concrete Coatings
Monarch Concrete Coatings
4.8(
17
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

In business since 1985

Free estimates

Credit card accepted

"We had a second story deck that was leaking water into the garage. We got 4 companies to come and give us a quote.  Two of them were cheaper but they seemed as puzzled as we were about what to do and could not guarantee from future problems. The other company suggested rebuilding the entire deck and was way out of budget. Ryan from Monarch Custom Coatings came with a sample that had several layers to waterproof the deck - we were very impressed that he was very knowledgeable and has a lot of experience with this type of work. He and his crew worked very hard, always professional, prompt, courteous, and our deck looks amazing now. We were so happy with them that we hired them again to redo the garage floors. We have had bad experiences in the past with contractors, so we know that finding a good, reliable, and honest one is very hard and rare. We highly recommend Monarch Custom Coatings!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Recommended by93%of homeowners
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Palm Construction, Inc.
4.6(
131
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Riverside, CA and surrounding areas

In business since 2016

"I went with Palm Construction on my roof replacement and I am completely satisfied with their work. Jonathan and his team were extremely professional, accurate, well organized and clean. They are really great team! They worked every day till the dark and my roof was finished ahead of schedule. The quality is excellent, my roof is beautiful and I can't recommend enough this company!"
Response time3 hrs
Response rate97%
Recommended by91%of homeowners
Request Quote
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Basement Waterproofing questions, answered by experts

Anything having to do with the structure of your home, such as raising the ceiling, is usually the most expensive part of finishing a basement. Another project component that could be a surprisingly high expense is adding an exterior entrance. 

The cost of a walkout basement can be anywhere from $5,000 to $35,000.

While a standard gutter system is widely considered the most effective way to prevent water damage to your home's foundation, several alternatives are available. These options can be used on their own in certain climates or as supplementary protection.

Common alternatives include:

  • Rain Chains: These are decorative chains that hang from the roof's edge, guiding rainwater to the ground.

  • Drip Edges: These metal strips are installed at the edge of the roof to direct water away from the fascia. While often used with gutters, they can be paired with a ground-level solution but are typically not sufficient on their own.

  • Rain Dispersal Systems: These systems work by breaking up the heavy sheet of water flowing off the roof, dispersing it over a wider area.

  • French Drains: This ground-level system uses a perforated pipe in a gravel-filled trench to collect and redirect water runoff away from the house.

  • Drip Paths: Placed directly below the roofline, these paths made of concrete, stone, or other materials prevent soil erosion and guide water away.

It's important to note that some alternatives like rain chains and dispersal systems may not be adequate in regions with heavy rainfall because they don't divert water away from the foundation as effectively as a full gutter system. Ground-based solutions like French drains can be very effective but are often more expensive and can affect your landscaping and curb appeal. Many experts recommend installing a full gutter system for maximum protection and using alternatives as supplementary measures.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

Methods include interior sealants, exterior excavation and waterproofing membranes, sump pump installation, and vapor barriers for encapsulation. Techniques vary based on the structure and severity of moisture issues.

The Riverside, CA homeowners’ guide to basement waterproofing services

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

See all articles