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Blue Door Home Inspections LLC

Grand Forks, North Dakota. Testing

1 Minnesota state license verified against the Minnesota Department of Health list, last checked November 3, 2026.

Credentials

Licenses and certifications

1 credential is on file for this business, exactly as the issuer's list printed it.

These are Minnesota licenses, and the business address is in North Dakota.

Radon411 has no North Dakota record for this business. Before hiring it for a home in North Dakota, check what North Dakota asks for. What North Dakota requires

Minnesota state license (1)

Issued by the Minnesota Department of Health, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026. No expiry date is on the record.

LicenseNumberStatus on the listVerifiedCheck with the issuer
Testing licenseNo. RMEA-00457Minnesota radon measurement licenseVerified November 3, 2026Verify RMEA-00457 with the Minnesota Department of Health (opens in a new tab)

Licensing in North Dakota

Ask North Dakota Department of Environmental Quality what it requires before you hire.

North Dakota's radon program, North Dakota Department of Environmental Quality, 701-328-5166.

What North Dakota requires, in its program’s own words, and how to check a credential

Local radon figures

Radon in Grand Forks

Grand Forks lies in Grand Forks County, where 75.9% of 680 radon tests reported to CDC (2008 to 2017, laboratory) were at or above 4 pCi/L, 16.6 points above North Dakota pooled (59.3%), 5th of 29 North Dakota counties with 30 or more tests.

Radon test figures for the county Grand Forks lies in
CountyTestsAt or above 4 pCi/LMedianNorth Dakota, pooledRank in the stateEPA zone
Grand Forks County68075.9%8.8 pCi/L59.3%5 of 29Zone 1

Shares of tests people chose to run and report, by county (2008 to 2017, laboratory); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.

The counties around Grand Forks

Around Grand Forks County, where Grand Forks lies, the nearest North Dakota counties with a CDC figure for 2008 to 2017, laboratory run from 51.4% to 82.5% of tests at or above 4 pCi/L; the closest, Walsh County, is 33 miles away at 79.5%.

The nearest North Dakota counties to Grand Forks County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Walsh County33 mi13279.5%9.8 pCi/L
Traill County35 mi3751.4%4.1 pCi/L
Pembina County59 mi5782.5%9.3 pCi/L
Ramsey County63 mi13476.9%6.9 pCi/L
Cass County69 mi86257.5%4.7 pCi/L
Foster County74 mi3161.3%4.5 pCi/L

Nearby

Radon professionals nearest Grand Forks

More radon professionals in Grand ForksMore radon professionals in North Dakota

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