ABOUT US

Chan Drainage

At Chan Drainage, we specialize exclusively in professional crawl space repair across Marin County, Sonoma County, San Francisco, and the North and East Bay Area. With decades of experience, we resolve the most common crawl space issues — including excess moisture, standing water, mold, musty odors, and structural damage. Our locally owned company delivers affordable crawl space solutions that outperform big-name competitors, both in price and lasting quality.

Comprehensive Services for Bay Area Homes:

✔️ Crawl Space Encapsulation & Vapor Barriers
✔️ Drainage Solutions & French Drain Installation
✔️ Stormwater Management & Foundation Drainage Systems
✔️ Sump Pump Installation & Repair
✔️ Crawl Space Clean-Up & Mold Prevention
✔️ Garage Cleaning & Epoxy Floor Coatings
✔️ Installation of Synthetic Moisture Control Products
✔️ General Home Repairs & Waterproofing

Whether you're in Berkeley, Oakland, Richmond, Petaluma, Novato, San Rafael, or anywhere in the San Francisco Bay Area, we offer tailored solutions to keep your crawl space dry, clean, and structurally sound.

Call Chan Drainage today for a free estimate and discover why we're the Bay Area's trusted name in crawl

Crawl Space Repair & Drainage Experts Serving Marin, Sonoma, San Francisco & the Greater Bay Area

Chan Drainage is the Bay Area’s trusted specialist in crawl space repair, drainage solutions, and moisture control. We proudly serve Marin County, Sonoma County, San Francisco, and surrounding North and East Bay communities with expert solutions designed specifically for the unique challenges of Bay Area homes.
Our services focus exclusively on crawl space repair and stormwater management, helping homeowners eliminate excess moisture, mold, foundation issues, and poor air quality caused by damaged or neglected crawl spaces. Whether you’re dealing with standing water, humidity issues, or structural damage under your home, our team provides permanent solutions with advanced crawl space encapsulation, vapor barriers, and professional waterproofing techniques.

We also offer complete drainage systems, including French drains, sump pump installation, and stormwater redirection to protect your home’s foundation and prevent long-term water damage. Our technicians are highly experienced in garage cleaning, epoxy floor coatings, and installing synthetic moisture control products that enhance property value and efficiency.
Locally owned and operated, Chan Drainage is known throughout the San Francisco Bay Area — including cities like San Rafael, Santa Rosa, Oakland, Berkeley, Petaluma, Novato, and Vallejo — for providing reliable, affordable service backed by decades of hands-on expertise. We understand the soil, climate, and construction styles of the Bay Area and tailor our solutions to meet your specific needs.
If you're searching for professional crawl space repair, basement waterproofing, sump pump services, or drainage solutions in Marin, Sonoma, or the Bay Area, contact Chan Drainage today for a free estimate. Our expert team is ready to protect your home from moisture and ensure a safer, healthier living environment.

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