Foundation and crawl space company · Chester, VA
Commonwealth Moisture and Mold Specialists
- Verified
- Source-checked Nov 2, 2026
- Independent
Virginia Class B contractor license #2705119246.[1]
Commonwealth Moisture and Mold Specialists is a family-owned Chester company whose main line is mold testing and remediation. It also drains and closes crawl spaces and installs sump pumps, dehumidifiers and vapor barriers. Call (804) 748-3099 for a free inspection.
About Commonwealth Moisture and Mold Specialists
Commonwealth Moisture and Mold Specialists is a mold company first. Its homepage leads with mold testing and remediation and says the company not only removes mold but finds the source and repairs it. The site says its staff are American IAQ Council-certified mold inspectors and remediators. Crawl space and basement work is the second line, and that is why it is listed here under foundation and crawl space.
The crawl space page is specific about what it fixes. It lists the signs of a wet crawl space, from musty odors and sweating ductwork to buckling hardwood floors and sticking doors. Its answer is crawl space drainage or a basement subfloor system, and it says a crawl space closed off from outside air can control moisture much better when installed properly. The same page says the company installs sump pumps, dehumidifiers, insulation and vapor barriers.
The company is licensed for the work. Virginia's contractor list shows a Class B license with the Home Improvement specialty, first issued December 1, 2007 and current through December 31, 2027. Class B covers single jobs from $30,000 up to $150,000. The BBB file names Diane E. Mueller as manager and has listed the company as accredited since October 2007. The site says its team has worked on mold, crawl space and basement problems in the Richmond Tri-City area for more than 20 years.
Mold testing is a separate service with its own charges. The testing page says it can sample for mold, fungal spores, bacteria, pollen, dust and fibers, and that testing and lab fees apply. The site also offers HVAC duct cleaning with before-and-after video, termite treatments, and military and service discounts, though it gives no discount amount.
Commonwealth Moisture and Mold Specialists services
- Crawl space drainage and basement subfloor systems
- Closed (sealed) crawl spaces for moisture control
- Sump pump installation
- Crawl space dehumidifiers
- Vapor barriers and insulation removal and installation
- Basement waterproofing
- Structural repairs from moisture, mold and termite damage
- Mold inspection, sampling and remediation
- HVAC duct cleaning
Known for: Mold remediation tied to fixing the moisture source · Crawl space drainage and closed crawl spaces · Lab-analyzed mold and air sampling
Hours
The site lists no hours. The company's Google listing showed Monday to Friday, 9 AM to 5 PM, when checked on November 2, 2026.
What to know before you call
- The homepage offers a free inspection by phone at (804) 748-3099. Mold testing is different: the site says testing and lab fees apply.[2][3]
- The site lists no hours. The Google listing showed weekdays, 9 AM to 5 PM.[4]
- The site mentions military and service discounts but gives no amount, so ask when you call.[2]
How to hire for foundation or crawl space work in Virginia
- Work over $1,000 needs a Virginia Board for Contractors license. Search the company's name or number on DPOR's License Lookup before you sign anything.[5][6][7]
- The license class caps the size of the job. Class C covers jobs over $1,000 and under $30,000, Class B covers $30,000 to under $150,000, and Class A covers $150,000 and up.[5]
- Virginia's building code requires a permit for work on any structural component of a house. Agree in writing who pulls it.[8]
Commonwealth Moisture and Mold Specialists questions
Does Commonwealth Moisture and Mold do crawl space work?
Yes, though mold is its main line. The crawl space page offers crawl space drainage, basement subfloor systems and closed crawl spaces, and says the company installs sump pumps, dehumidifiers, insulation and vapor barriers. The BBB lists crawl space encapsulation and drain systems among its services. It also repairs structural damage from moisture, mold and termites, according to the site.[9][10]
Is Commonwealth Moisture and Mold licensed in Virginia?
Yes. COMMONWEALTH MOISTURE & MOLD SPECIALISTS LLC holds Class B contractor license 2705119246 on Virginia's DPOR list, with the Home Improvement specialty. It was first issued December 1, 2007 and runs to December 31, 2027. Class B covers single jobs from $30,000 up to $150,000. The BBB file shows the same license number.[1][10]
Who runs Commonwealth Moisture and Mold?
The BBB file names Diane E. Mueller as the company's manager and its principal contact. The company's own site does not name an owner, but its About page calls the business family-owned and operated. The BBB also lists the company as accredited since October 1, 2007, with the business started in February 2007.[10][11]
Does it charge for mold testing?
Yes. The testing page says testing and lab fees apply and asks you to call for an appointment. It can sample for mold, fungal spores, bacteria, pollen, dust and fibers, using swabs, bulk samples, spore traps and plates. The site says samples go to outside laboratories. Its homepage separately offers a free inspection by phone.[2][3][12]
Where does Commonwealth Moisture and Mold work?
The company works from Chester, in Chesterfield County. Its contact page says it serves the Richmond Tri-City area, Henrico, Hanover, Chesterfield and surrounding counties. The site publishes no street address and no storefront, so this page shows Chester only. Reach it at (804) 748-3099 or through the contact page.[1][13]
How we checked
Source-checked Nov 2, 2026 · 14 dated sources
Why we listed them
The company's site says it serves the Chester area and calls it family-owned and operated. Its Virginia contractor license, first issued in December 2007, is on file at a Chester post office box, and its BBB file, opened the same year, names Diane E. Mueller as manager. It publishes no storefront address, so this page shows Chester only.[1][11]
The About page calls the company family-owned and operated. The BBB names Diane E. Mueller as manager of Commonwealth Moisture & Mold Specialists, LLC. No franchise or parent company appears on any source.[1][10][11]
License and history
- VA Class B #2705119246 · Contractor (Home Improvement (HIC)). Expires Dec 31, 2027; checked Nov 2, 2026.[1]
Credentials
Sources
Every fact on this page comes from one of these.- 1Nov 2, 2026
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- 5Oct 29, 2026
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