How much does basement waterproofing cost?

• <div><p>The <a href="https://www.angi.com/articles/how-much-does-basement-waterproofing-cost.htm">cost of basement waterproofing</a> is <b>$4,950</b> for the average homeowner. However, you could end up paying between <b>$600 and $14,000</b>, depending on factors like basement size, waterproofing method, and the region you live in. </p><p>If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between <b>$2,500</b> <b>and $5,000</b> to waterproof, but that price rises significantly for a larger basement. </p></div>

What are the pros and cons of finishing a basement?

• <div><p>When considering finishing your basement, take into account a few pros and cons:</p><p>Pros</p><ul><li><p>Can increase the value of your home</p></li><li><p>Separate space from the rest of the house </p></li><li><p>Customize and personalize the basement to suit your needs and style</p></li><li><p>Increase the amount of living space in your home</p></li></ul><p>Cons</p><ul><li><p>May not regain enough value to cover the cost of finishing</p></li><li><p>Lack of natural light if it’s below ground level</p></li><li><p>Moisture or flooding can cause costly damage</p></li><li><p>Installing plumbing and electrical can be messy and costly</p></li></ul><p></p></div>

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Q: How can I tell if my basement or crawlspace needs waterproofing?

• <div><p>Signs include persistent dampness, mold or mildew presence, musty odors, and visible water stains. If any of these occur, it is advisable to contact a professional for an inspection.</p></div>

Q: What happens when a backflow valve fails?

• <div><p>When a backflow valve fails, wastewater will flow back into your system, contaminating your drinking water. You&rsquo;ll immediately notice backflow valve failure from a rotten smell and brown water coming from faucets. Get in contact with a septic pro or a plumber immediately if you suspect this has happened to you. </p></div>

Q: What are the benefits of waterproofing or encapsulating a basement or crawlspace?

• <div><p>Waterproofing or encapsulating protects against moisture, preventing mold growth and structural damage. These services also enhance energy efficiency and improve air quality by keeping humidity levels in check.</p></div>

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Verified Reviews for Basement Leak Repair pros in Eureka, CA

*The Angi rating for Basement Leak Repair companies in Eureka, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Leak Repair needs.

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Last update on November 12, 2025

Reviewed in May 2025
Adrian was quick to reply and offered a reasonable price for his team to fix a leak in my roof. He greeted me with a smile and hand shake and despite the fact that not many companies will even come all the way out to my town, he had the team fix the leak the same morning he came to inspect. Very...
Dove Roofing and Solar
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Reviewed in July 2024
These people are scammers. Quoted $55k to replace the pipes in the house and insurance declined. Then quoted $18k to locate leak and repair by tearing up floors and walls. Insurance approved $12k and we were on the hook for $6k. They came out to detect the areas for the leak. The day they came...
RAPID PLUMBING
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Reviewed in December 2023
Red Rocket Plumbing came highly recommended when i was looking for a plumber to fix an emergency leak in my kitchen. He was fast, reliable, professional and very reasonably priced. I will definitely be using their services again.
Red Rocket Plumbing
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Reviewed in November 2020
Plumbing has severely failed. We’d had over 20 leaks from elbows in ceilings walls and floors. Don’t know it until damage is done and usually extensive. Reached out to them for resolution but they refused to help. Told me to take it up with ailing father ( Wayne) who is in care home with...
MapleService Plumbing & Heating
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Reviewed in October 2016
Replaced front door and windowm repaired termite damage, painted entire interior
MC Home Improvements and Construction
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Reviewed in November 2015
We had to call in an emergency because a different contractor had replaced the toilet. The next day we found a puddle around the toilet and because it was leaking before the shut-off valve we had to call Hearts. The plumber did a good job replacing the valve and the faucets. I always call Hearts...
Heart Plumbing
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Reviewed in October 2012
They did some good work last year but I do not remember the specific part. Lately they checked the service engine light and charged me half price for the diagnostics as it turned out to be a leak in the exhaust system and was easily repaired.
JOHNSON AUTO ELECTRIC INC
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Reviewed in January 2011
Jeremiah is superb. He will not try to take advantage but will help rebuild if possible, anything that can be used; if not, he will advise replacement and assist to the degree that you need him. I hired him upon purchase of an old Victorian that was leaking just about everywhere. He spent...
Straight Flush Plumbing
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Reviewed in April 2009
They Giombetti guys (one electrician and one helper, costing a total of $100 per hour) showed up when they said that they would. I was so pleased with their work that I asked them to run some wires for in-wall speakers and also a couple of new outlets. A Deck House is the worst possible kind...
GIOMBETTI ELECTRIC, INC.
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MARTIN CONSTRUCTION

5.00(

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MARTIN CONSTRUCTION

5.00(

)

•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

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We provide home remodeling services in Eureka, CA and surrounding areas. From updating your kitchen and bathroom to remodeling your entire home, we can help your living space reach its full potential. Our services include the essentials, like plumbing, electrical work, drywall, painting, siding, doors, windows, decks, roofing, tiling, and cement work so there's no need to hire different contractors for different jobs. We also provide foundation repair, deck inspections, and maintenance/repairs for rental properties. You can trust us to handle every step with precision and skill.

"He got the job done."

John P on April 2021

"He got the job done."

John P on April 2021

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MARTIN CONSTRUCTION

MARTIN CONSTRUCTION

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Straight Edge Painting

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Brown Designs

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Rendon Construction and Remodeling

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DMC CONSTRUCTION

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The Eureka, CA homeowners’ guide to basement leak repair services

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