DOEE issues two licences, mold assessment and mold remediation, and states that no person may assess or remediate mold without the corresponding licence. Assessment professionals must carry at least $1,000,000 in general liability and errors and omissions cover including mold; remediation professionals must carry at least $1,000,000 in general liability including mold and pollution cover.
DOEE's homeowner guidance sets the trigger at ten square feet of indoor mold growth, and applies it to tenant-occupied homes.
Source: District of Columbia Department of Energy and Environment (DOEE), Mold Assessment and Remediation Licensure Regulations. Checked 2026-08-14.

Ask for the licence number and check it against the District of Columbia Department of Energy and Environment (DOEE) register before work starts. In District of Columbia a licence number you cannot look up on the District of Columbia Department of Energy and Environment (DOEE) register is not a licence. Ask separately who will issue clearance at the end, because in District of Columbia that should not be the same firm doing the removal.
A licensed job costs more than an unlicensed one, and in District of Columbia that is the point rather than the problem: the premium buys a protocol, a separate assessor and a clearance document. The drying work underneath it is still priced at national rates in District of Columbia.
Drying itself is priced the same in District of Columbia as anywhere else; the published national ranges are on the pricing page.
Metro guides for District of Columbia publish once three local facts can be sourced for a city: named operators, local flood risk and the county permit office. Until then the District of Columbia position above is the state-level answer, and the national guides below cover cost and process.
The District licenses mold assessors and remediators separately, and requires $1,000,000 of cover from each.
Ask for the licence number and check it against the District of Columbia Department of Energy and Environment (DOEE) register before work starts. In District of Columbia a licence number you cannot look up on the District of Columbia Department of Energy and Environment (DOEE) register is not a licence. Ask separately who will issue clearance at the end, because in District of Columbia that should not be the same firm doing the removal.
District of Columbia Department of Energy and Environment (DOEE), under the Mold Assessment and Remediation Licensure Regulations. Position checked 2026-08-14. District of Columbia can change its rules, so confirm current requirements with District of Columbia Department of Energy and Environment (DOEE) before relying on this for a decision.
Emergency Response
Call and a crew is dispatched - extraction the same day, drying equipment set the same visit, and the documentation your claim needs from the first hour.