Inspections   Consultations  Tests

           301 467 5922




Certifications & Affiliations




Reports (Samples)

Inspection Agreement (Sample)

Request for Quotation



Home Inspections





New Houses

Historic House

Building Investigations


Infrared Scans



Environmental Consultations





Have me call you.

Environmental Consultations


No conflict of interest:  Potomac Homes is an independent, locally owned and operated business, providing only radon measurement services and with no links to and no interferences from radon remediation contractors.



Radon Measurements Specialist

Jacques Sirvain

Radon Measurement Provider AARST-NRPP (#104686 RT,  Expiration 03/31/2020)
Radon Measurement Specialist NRSB (#11SS013, Expiration 03/31/2020)
For Short-Term Radon Measurements (48 hours to 4 days), Potomac Homes deploys the most accurate professional E-PERM Short-Term Electret Radon Monitors, which are true integrating detectors that can measure fluctuating radon concentration regardless of extreme temperatures or humidity, detecting ions produced by the decay of Radon-222, with exposure times of 48 hours or more. At the end of the tests, Potomac Homes measures the Radon-222 concentrations and, the same day, sends its clients a comprehensive computerized report.
$149.00 in Montgomery County, MD.
$189.00 elsewhere in DMV
 Usually, one set is sufficient for a house with a basement footprint of 1,000 sq. ft. or less. However, as per protocol, if there is a partial basement with a crawl space or a living space over a garage or a living space over a slab, we would have to deploy additional sets of two monitors in these living spaces. Additional sets of two monitors are $89 each.

Radon Measurements
Radon is estimated to cause about 21,000 lung cancer deaths per year in the USA. (EPA's 2003 Assessment of Risks from Radon in Homes - EPA-407-R-03-003)

U.S. Surgeon General Health Advisory

"Indoor radon is the second-leading cause of lung cancer in the United States and breathing it over prolonged periods can present a significant health risk to families all over the country. It's important to know that this threat is completely preventable."

January 2005 

It is highly recommend to measure the indoor concentration level of radon in Montgomery, Howard, Frederick counties, in Northern Virginia and in the District of Columbia

The EPA recommends that you fix your home when the radon level is 4 pCi/L ("Action Level") or more and we suggest that you contact a qualified radon reduction contractor about lowering the radon level if results of the above tests are over this threshold.


Another level set by the EPA is 2 pCi/L ("Consider Action Level"). At this level, the EPA recommends that you consider installing radon abatement systems in your home to reduce your indoor radon levels.

[more about radon]

Radon Professional

[Home] [Links] [About] [Contact]

To report problems with this website, please contactTo report problems with this website, please contact

Copyright © 2005 Potomac Homes

Last modified: 03/12/2018

Professional Services: Home Inspections, Residential Inspections, New Houses Inspections, Pre Drywall Inspection, Final Inspections, Historic Houses Inspections, Building Investigations, Infrared Thermal Imaging, Maintenance Inspections, Trouble Shooting Consultations, Environmental Consultations
Infrared Thermal Imaging, Infrared Inspections, Building Thermography, Building Thermogram, Infrared Scans, Building Infrared Scan, Building Science, Building investigations. Thermography, infrared scan of electrical systems, building envelope infrared scan, energy loss infrared thermal imaging
Indoor Air Quality (IAQ):  Mold Inspections, Mold Testing, Mold Sampling, Mold Assessment, Allergens, Lead in Paint, Asbestos
Radon Tests, Electro Magnetic Fields Testing, EMF Testing, Noise Testing
Water Quality


Montgomery County, Prince George's County, Frederick County, Howard County, Anne Arundel County in Maryland

Montgomery County: Ashton, Aspen Hill, Bethesda, North Bethesda, Beallsville, Barnesville, Boyds, Cabin John, Chevy Chase, Clarksburg, Colesville, Darnestown, Derwood, Dickerson, Friendship Heights, Garrett Park, Gaithersburg, Germantown, Glenn Echo, Kensington, Montgomery Village, Olney, Potomac, North Potomac, Poolesville, Rockville, Silver Spring, Takoma Park, Wheaton

Howard County: Clarksville, Columbia, Dayton, Ellicott City, Elksridge, Glenwood, Scaggsville

Prince George’s County: Beltsville, College Park, Greenbelt, Hyattsville, Landover, Laurel, Capitol Heights, Suitland, Upper Marlboro, Waldorf

Washington DC - District of Columbia

Northern Virginia: Alexandria, Arlington, Fairfax, Falls Church, Loudoun counties. Dulles, Centreville, Chantilly, Herndon, Reston, McLean, Vienna, Rosslyn, Clarendon, Ballston, Annandale, Sterling, Great Falls, Oakton, Ashburn, Leesburg, Tysons Corner, Burke, Manassas