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Products & Services

Products:

CleanSpace® 20-Mil Vapor Barrier
SmartSump™ Crawl Space Sump Pump System
UltraSump® Battery Backup System
SaniDry Sedona Dehumidifier
SmartJack® Crawl Space Support System
SilverGlo™ Wall Insulation Panels
TerraBlock™ Crawl Space Floor Insulation
Mold-X2 Treatment System
Interior Drainage Systems / Trench Drains
Optional Air Purifiers

Before and After Pictures from Half Moon Bay

Crawlspace encapsulation in Half Moon Bay, CA

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Happy Customers Surrounding Half Moon Bay, CA

Reviews

Work Requests

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Work requests in Half Moon Bay, CA Project Location: Half Moon Bay, CA

- Sump pump needs checking - Scope if humidity control is needed - Scope insulation repair / replace All areas in crawlspace

Project Location: Half Moon Bay, CA

Water coming into crawl space

Project Location: Half Moon Bay, CA

Wet crawl space, need sump pump

Project Location: Half Moon Bay, CA

We moved in 3 years ago and never had our crawl space inspected. We would like it to be inspected for mold and drainage. We would like to see if our sump pump is working properly as the sump pump is continuously draining water out of the crawl space all day/night. Do we need a more powerful sump pump? Also, we would like to add insulation in the crawl space.

Project Location: Half Moon Bay, CA

Cleanup crawl space raccoon feces, etc.

Project Location: Half Moon Bay, CA

Multiple crawl spaces in the house; considering adding vapor barriers to reduce humidity. House is on a slope.

Project Location: Half Moon Bay, CA

Doublewide mobile home. Would like to have floor insulation removed and replaced with new. Install new floor netting. Clear and remove debris under home and install new moisture barrier at ground.

Project Location: Half Moon Bay, CA

Approx. 1,100 sq.ft house needs under floor/in crawl space insulation. Currently no insulation in place.

Project Location: Half Moon Bay, CA

Crawlspace collects water and causes mold. Would like a sump pump and vapor barrier installed.

Project Location: Half Moon Bay, CA

Musty smell from crawl space. Would like to seal it up/moisture barrier.

Reviews from our customers in Half Moon Bay, CA

5.0/5
Warren K. Warren K. Oriskany

5.0/5
David B. David B. Waterloo Ct

Awesome, would recommend to anyone

4.8/5
Jessica L. Jessica L. San Mateo, CA

5.0/5
Erick T. Erick T. Edison St

4.8/5
R J. R J. Alicante Dr.

We have always had the musty odor under the house and your product seemed worth checking into. Larry Hedman was very knowledgeable in the product and its very helpful in explaining it's benefits. He even emailed me the pcitures he took under my house. Raul Loyo and the installation crew were very good and kept my house clean during installation. R. Jetke.

4.5/5
Tony B. Tony B. Hampton Ave

The foreman David was very friendly and accommodating. He communicated his plan well and got the job done quickly and efficiently.

4.4/5
Eric & Maggie P. Eric & Maggie P. Anamor St.

4.6/5
Jim E. Jim E. Virginia Ave

Heard about you at the Home & Garden Show of Santa Clara & San Jose - we noticed a professional manner. You all were very professional every step of the way - you should all be proud to be a part of Clean Crawlspace.

5.0/5
John P. John P. Kentucky St

Would like advice on closing up the existing crawlspace air vents. A lot of debris enter into the nice clean crawl space; not certain if I need air circulation as a building code or possible attempt to change this region into a conditioned space by installing air duct / ducts to provide heat

5.0/5
Mark M. Mark M. Cerrito Avenue

Truly exceptional service! My only regret is that I have but one Crawl Space for you to service!

4.2/5
Bob D. Bob D. Marlin Ave

Your Concept seemed interesting to us and we knew we had to address the dampness under our home. We were impressed with the installation crew. they were pleasant, easy to deal with and seemed intent on getting the job done quickly in order to save us money on trenching costs.

4.0/5
Karla K. Karla K. 94063, CA

There was some lack of communication between Alex and David about where the pump should drain in the yard, and there were some questions for me that I wasn't sure how to answer.

5.0/5
Dave H. Dave H. Clifton Rd.

Great work overall, everyone involved was very efficient, considerate and courteous. My wife and I have already noticed a significant improvement in air quality within the house, no mildewy smell, etc.Thank you. :)

5.0/5
Lana H. Lana H. Sunrise Court

Great service provided by everyone we came into contact with. Thanks!

5.0/5
Chris C. Chris C. Forest Lake Drive

This was one of the best experiences we have ever encountered with a company. Your entire staff made this project very easy and everyone was very courteous with the entire process. Thank you for great customer service.

5.0/5
Wayne R. Wayne R. Cuesta Real

5.0/5
Aaron G. Aaron G. Palou Ave

5.0/5
Mark M. Mark M. Noe Street

5.0/5
Marlene P. Marlene P.

Wanted to brighten and clean my crawl space and to discourage rat infestation.

Your Expert Wet Crawl Space Repair Company in Half Moon Bay, CA

Crawl Space Repair & Encapsulation in Half Moon Bay, CA

Since 2003, Clean CrawlSpace Inc. has helped homeowners in Half Moon Bay, CA protect their homes from crawl space moisture, mold, and damage. As a certified CleanSpace® dealer, we use trusted solutions like vapor barriers, sump pumps, dehumidifiers, and insulation that is designed to last and backed by real results. When it comes to crawl space repair, we're the team other pros rely on. Even HGTV turned to us on House Detective to fix real crawl space problems.

What’s happening beneath your home matters. Musty smells, warped floors, and damp air often start in the crawl space but they don’t stay there. Moisture can quietly damage your structure, ruin air quality, and chip away at your home’s value. At Clean CrawlSpace Inc., we’ve spent over 20 years helping Half Moon Bay, CA homeowners stop crawl space problems before they spread. We install proven systems like vapor barriers, sump pumps, drainage, and dehumidifiers, everything needed to protect your home from the ground up.

Services We Offer in Half Moon Bay

Crawl Space Encapsulation: CleanSpace® 20-mil vapor barrier sealed along floors and walls to block moisture, odors, and outdoor air. Includes a 25-year transferable warranty.
Sump Pump Installation: Our powerful sump pumps come with airtight lids, built-in alarms, and optional battery backups, designed to handle water removal reliably, even during storms or outages.
Dehumidification: High-performance dehumidifiers like the SaniDry Sedona remove excess humidity, helping prevent mold growth and improving the air quality throughout your home.
Insulation for Crawl Spaces: We use water-resistant materials like SilverGlo® wall panels and TerraBlock™ floor insulation, built specifically to hold up in damp, low-clearance environments.
Mold Treatment & Cleaning: Mold-X2 products safely remove surface mold as part of a complete moisture management system.
Drainage Systems: Interior crawl space drains direct groundwater toward the sump pump, preventing water buildup and protecting your foundation.
Air Quality Solutions: Optional air purification systems help filter allergens, mold spores, and odors rising from your crawl space into your living space.

Worried about your crawl space? Get a free estimate.

If you're concerned about crawl space moisture, mold, or structural problems, you can count on Clean CrawlSpace Inc. for honest answers and proven solutions. We’ve earned the trust of homeowners in Half Moon Bay, CA by delivering professional crawl space encapsulation, sump pump systems, drainage, dehumidifiers, and mold treatment that last. Schedule your free estimate today!

Get A FREE Quote!

Job Stories From Half Moon Bay, CA

Crawl Space Encapsulation in Half Moon Bay

This home was suffering from chronic moisture and insulation issues. The crawl space was moist, cold, and moldy. These are all conditions that can make the health of the home suffer, and with a baby, on the way in just 2 months this homeowner was rightly concerned. We sent out our mold specialist to ensure a proper inspection was taken and he came up with a plan to fix the issues.

Our crews came out and performed the work needed. They started by cleaning and sanitizing the entire crawl space, then they removed any mold and debris from the crawl space. They then installed the best liner on the market to seal the crawl space from the moist soil beneath. That liner is the CleanSpace encapsulation system.

The home's crawl space is now mold-free, clean, dry, and protected! Now when the little baby arrives they will not have to worry about the baby being harmed from the air coming from the crawl space!

Work Requests From Half Moon Bay, CA

Project Location: Half Moon Bay, CA

- Sump pump needs checking - Scope if humidity control is needed - Scope insulation repair / replace All areas in crawlspace

Project Location: Half Moon Bay, CA

Water coming into crawl space

Project Location: Half Moon Bay, CA

Wet crawl space, need sump pump

Project Location: Half Moon Bay, CA

Cleanup crawl space raccoon feces, etc.

Project Location: Half Moon Bay, CA

Multiple crawl spaces in the house; considering adding vapor barriers to reduce humidity. House is on a slope.

Project Location: Half Moon Bay, CA

Doublewide mobile home. Would like to have floor insulation removed and replaced with new. Install new floor netting. Clear and remove debris under home and install new moisture barrier at ground.

Project Location: Half Moon Bay, CA

Approx. 1,100 sq.ft house needs under floor/in crawl space insulation. Currently no insulation in place.

Project Location: Half Moon Bay, CA

Crawlspace collects water and causes mold. Would like a sump pump and vapor barrier installed.

Project Location: Half Moon Bay, CA

Musty smell from crawl space. Would like to seal it up/moisture barrier.

Project Location: Half Moon Bay, CA

We recently purchased out home and would like someone to come take a look at our crawlspace and provide vapor barrier and moisture control recommendations and estimate the cost to install, before the rainy season comes. Thank you!!

Project Location: Half Moon Bay, CA

Have existing liner and sump pumps installed. Had new sump installed a few years ago and the other cleaned. Cannot tell if one sump is still working or not. Also need a re-clean up/inspection of the liner (vacuum?) as a lot of debis has blown in. Your sump guy said he saw rat droppings but we can't see any so how do you clean the liner up?

Project Location: Half Moon Bay, CA

Quote for crawl space encapsulation for 1983 sf

Project Location: Half Moon Bay, CA

I had major dry rot repairs recently and someone suggested putting cheap concrete "rat proofing" in my coastal hillside crawlspace to protect it from all the moisture. I don't want to spend a fortune-as I already have-but I'm open to an estimate.

Project Location: Half Moon Bay, CA

Need someone to inspect our crawl space & tell us condition and if any repair is needed

Project Location: Half Moon Bay, CA

We have mold in our basement and would like to check the price for encapsulation.

Project Location: Half Moon Bay, CA

Crawl space insulation may be needed we experience very cool floors, smells near front door from under the house, etc.

Project Location: Half Moon Bay, CA

My crawl space has water on it. I would like to waterproof it.

Project Location: Half Moon Bay, CA

Some standing water when raining and also when using irrigation system. There is a smell from the crawl space. Crawl space/floor is concrete.