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Best basement waterproofing pros near Orange County, CA

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Verified Reviews for Basement Waterproofing pros in Orange County, CA

*The Angi rating for Basement Waterproofing companies in Orange County, 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 Orange County, 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 September 03, 2025

Top-Rated Basement waterproofing pros in Orange County - Updated Nov 2026

Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
4.6(
241
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Orange County, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Erinn was my initial contact and he gave a very through and fair estimate. We had structural work done to support floor joists and large beams under the garage that needed replacing. Ernesto and his team, Julio, Salvatore and Gilder worked tirelessly to complete the work and were respectful, punctual, informative and good humoured throughout the entire process. I would not hesitate to use them again or recommend them to others. A really great company!!"
Basement Addition
Basement Expansion
Caisson Supported Retaining Wall
Cantilevered Deck Design Build
Deck Expansion and Slope Failure with Retaining Wall

+323

Response time10 hrs
Response rate100%
10 neighbors recently requested a quote
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Avatar for Bill Metzger Plumbing
Bill Metzger Plumbing
4.8(
83
)
Basement Drainage Channels - Install

Serving Orange County, CA and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"Excellent. The guys were professional, courteous and thorough. Fixed the problem and advised how to stop from happening in the future. Very clean and respectful of property."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+40

3 neighbors recently requested a quote
Recommended by82%of homeowners
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Avatar for Saber
Saber
3.6(
148
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Orange County, CA and surrounding areas

Approved

In business since 1986

Free estimates

Warranties offered

"Very helpful on questions regarding projects. Always returning phone calls."
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation
REIG Operation Renovation

+35

Response time1 day
5 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Groundworks
Groundworks
3.5(
176
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Orange County, CA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Warranties offered

"Angel and Andrew did a great job on raising the concrete on my patio. One side was sinking which caused the other side to lift up. They were able to even out the cement so now it looks great. Thank you for working so hard to fix it."
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time11 hrs
84 neighbors recently requested a quote
Recommended by38%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 Orange County, 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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Palm Construction, Inc.
5.0(
112
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Orange County, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

Recommended by100%of homeowners
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Palm Construction, Inc.
5.0(
90
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Orange County, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"We worked with Ali (sales manager) and Tony (project manager), who took the time to design a project that made sense for our property and our budget, made a number of suggestions and recommendations and were never pushy or tried to "sell" us on something. The crew really went above and beyond to provide top quality workmanship and overall we were in very good hands. Highly recommended!"
Recommended by100%of homeowners
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 Orange County, 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
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Avatar for In-Line General Construction
In-Line General Construction
4.6(
142
)
Basement Drainage Channels - Install

Serving Orange County, CA and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Very honest reliable contractor. Came in on budget and on time. Will be using him on our next project."
Outdoor living area
Complete kitchen remodel
Complete bathroom remodel
Recommended by99%of homeowners
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Showing 1-10 of 125
Basement Waterproofing FAQs, answered by experts

In Orange County, basement waterproofing contractors include general waterproofing specialists for comprehensive solutions, foundation repair experts who address seismic and settling issues, and drainage system installers for sump pumps, French drains, and moisture barriers. Concrete and masonry professionals handle crack repairs, while restoration contractors focus on mold remediation and water damage. Coastal contractors often manage saltwater intrusion, while inland specialists address groundwater and hillside runoff.

Helpful?

In Orange County, maintain your basement waterproofing by inspecting sump pumps and drainage systems before and after the rainy season, especially in neighborhoods with high groundwater. Clean gutters and downspouts regularly, check for new cracks or shifting in foundation walls, and reapply sealants annually. After earthquakes or heavy storms, inspect for hidden leaks. Homes near the coast may need extra attention to metal components due to salt air exposure.

Helpful?

For basement waterproofing in Orange County, review local permit requirements and check if your property lies within a designated flood zone. Schedule soil and moisture testing, especially if your area has clay-heavy soils or a high water table. Plan projects during the dry season, coordinate with your HOA for access, and ensure all utilities are clearly marked. Choose contractors experienced with Orange County’s unique drainage and seismic needs.

Helpful?

In Orange County, interior basement waterproofing projects typically take 1-2 days, while installing drainage systems or sump pumps may require up to a week. Exterior waterproofing involving excavation and foundation sealing can last 2-4 weeks. The total timeline may extend to 6-12 weeks when factoring in permit approvals, HOA coordination, and weather delays, especially during the rainy season or in areas with strict local regulations.

Helpful?

In Orange County, common signs that basement waterproofing may need to be redone include new water stains after seasonal rains, persistent musty odors, or visible mold growth. Watch for efflorescence, which appears as white, powdery deposits, and check for widening cracks or peeling paint. If you notice damp spots after Santa Ana winds or in flood-prone neighborhoods, these can signal moisture barrier or foundation sealing failures.

Helpful?

The Orange County, 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