Contractor in Denton, MD.
John J Gellen appears in Maryland license records as a contractor based in Denton, MD. The record lists a CONTRACTOR/SALESMAN license (#89073) with status “Active”. The listed expiration date, 2026-10-26, has passed, so check the state board before hiring.
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
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John J Gellen is a contractor based in Denton, Maryland. Their license classification is CONTRACTOR/SALESMAN.
Yes. John J Gellen holds Maryland licensing authority license #89073 (status: Active). Verify the current status on Maryland licensing authority before hiring.
John J Gellen is based in Denton, MD 21629.
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The fastest way is to post your project on Bidroom — John J Gellen and up to 2 other verified contractors in Denton can bid on it, and every quote includes itemized pricing + a written scope of work.
Not yet. This listing was created from public Maryland license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.
Contractor vetting checklist · Cost guide · Look up this license at the state board