Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Riverside, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your basement waterproofing project in Riverside, CA?

Select your specific project to find the pro for you.

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 October 17, 2025

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 rate88%
2 neighbors recently requested a quote
Request Quote
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

+315

Response time10 hrs
Response rate96%
22 neighbors recently requested a quote
Request Quote
Avatar for Saber
Saber
3.7(
160
)
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

Response time3 days
Response rate93%
36 neighbors recently requested a quote
Request Quote
Avatar for Groundworks
Groundworks
3.4(
174
)
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

"These guys were awesome!! If you need foundation work, call them first. I have a raised foundation and it was off by 3 in. in some area's. I went with this company because they do not use contractors or sub-contractors. Everything is done by the company! I had one window break and they called me immediately about it, cleaned it up and got the plywood to cover the opening. When they gave me the quote I didn't quite have the money. I called them apprx 10 mos later to give the go ahead with the work. By that time the prices had gone up ALOT by 10K. But they honered the 1st quote because it was under a year old. And a good warranty!!"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time11 hrs
65 neighbors recently requested a quote
Recommended by38%of homeowners
Request Quote
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

+77

Response time7 hrs
Recommended by71%of homeowners
Request Quote
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!

Request Quote
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

"It went very well!  They were really professional and I had them also repair some weak spots.  They were also very accommodating to the tenants."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Recommended by93%of homeowners
Request Quote
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
...
Showing 1-10 of 128
Basement Waterproofing questions, answered by experts

Yes, cleaning a crawl space is worth the cost. Although it's an out-of-sight area, neglecting it can lead to significant problems like pest infestations (including termites and carpenter ants), mold, and fungal growth, which can cause structural damage. Regular cleaning helps prevent these issues. While hiring a contractor has ongoing costs, the price for cleaning—typically between $0.50 and $4 per square foot—is much lower than the cost to remediate a pest or mold problem. Additionally, a clean crawl space can lead to improved indoor air quality and more comfortable temperatures in your home.

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

Basements with persistent moisture problems or flooding shouldn’t be finished until the moisture issues have been fixed. In addition, if your foundation is cracked, you have unmitigated radon levels, or you have asbestos or lead pipes, remediate the underlying problem before finishing your basement. Turning a basement into living space before fixing these issues can lead to serious health risks or structural damage. 

The foundation repair that will work best varies based on the extent of the damage, the underlying cause, soil conditions, weather conditions, and more. Permanent foundation solutions like underpinning and exterior drainage solutions are better than temporary fixes that don’t address the source of the issue. Some examples of more temporary solutions include mudjacking or slabjacking, waterproof paint, and dampproofing. The best course of action is to have a reliable foundation specialist inspect your issue, treat the underlying problem, and restabilize your foundation.

Permits may be required for major repairs, structural work, or electrical and plumbing restoration after a flood. Check with your local building department to determine permit requirements and associated fees for your flooded basement cleanup project. Obtaining the correct permits helps ensure work is done safely and up to code.

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