Mold assessor license requirements in District of Columbia

What the District requires in a mold remediation protocol

§3205.1(c) lists six things the protocol shall specify, and they run subparagraph for subparagraph in the same order as the Texas six: the rooms or areas where the work shall be performed; the estimated quantities of materials to be cleaned or removed; the methods to be used for each type of remediation in each area; the personal protective equipment to be used by indoor mold remediation professionals; the proposed types of containment; and the proposed verification procedures and criteria.

The District then adds something no other jurisdiction does — photographs, in the definition itself. §3299 defines a mold remediation protocol as a document that "includes relevant photograph(s) of the scene of mold remediation prior to remediation." A District protocol without photographs does not fail a requirement; it fails to be a protocol.

That condition is self-satisfying in practice. The assessor writes the protocol before any work begins, so every inspection photograph already qualifies, and there is no before-and-after classification to maintain. Note also the District's word: "relevant", not "all". The two or three per area that carry the finding are enough. The all-photographs rule is Texas's, and it attaches to the post-remediation report.

Cited: DC 20 DCMR §3205.1(c)(1) · DC 20 DCMR §3205.1(c)(2) · DC 20 DCMR §3205.1(c)(3) · DC 20 DCMR §3205.1(c)(4) · DC 20 DCMR §3205.1(c)(5) · DC 20 DCMR §3205.1(c)(6) · DC 20 DCMR §3299

The containment rule is an either/or behind a ten-square-foot trigger

§3205.1(d), in full: "Containment shall be specified in a mold remediation protocol when a total surface area of ten square feet (10 ft.2) or more of indoor mold growth is in an affected area, unless the indoor mold assessment professional describes in the mold remediation protocol why containment is not necessary."

Read the "unless". The obligation is to specify containment; describing why containment is unnecessary is the escape from that obligation, owed only where containment is omitted. A protocol that prescribes full containment owes no justification at all — and a checklist that demands one from every District protocol is telling the assessor that a document satisfying the rule is defective.

Ten square feet is the District's own trigger, the same figure that bounds New York's Article 32. It is not interchangeable with thresholds published in non-binding guidance, which exist in several sizes and carry no legal force anywhere.

Cited: DC 20 DCMR §3205.1(d)

Two things the protocol must say about a verification that has not happened yet

§3205.1(h) governs the verification procedures the protocol proposes, and two of its items are the ones protocols skip, because they describe a visit that is still weeks away. (h)(3): the protocol shall specify that post-remediation assessment is conducted while walk-in containment is in place, where walk-in containment is specified for the project. Deciding that after the fact is too late — by then the containment is down and cannot be put back.

(h)(4) is the most valuable line in the chapter, and it is not really a compliance line at all: the protocol must specify "the procedures to be used in determining whether the underlying causes of the mold identified for the project have been remediated so that it is reasonably certain that the mold will not return from those same causes." Remediating the mold and leaving the water is the most expensive recurring failure in this industry, and the District is the jurisdiction that makes you write down in advance how you intend to prove you did not.

Cited: DC 20 DCMR §3205.1(h)(3) · DC 20 DCMR §3205.1(h)(4)

The District defines two post-remediation documents, and they are mutually exclusive

Where Texas has one report with two endings, the District has two documents, selected by the outcome. The verification report — the passing document — carries nine elements: relevant worksite observations; the type and location of relevant measurements and samples; relevant data including temperature, humidity and material moisture; the results of analytical evaluation; copies of relevant photographs; if necessary, recommendations of specific professional disciplines; where any are recommended, a statement that the project's verified completion is contingent on that work; an area for the remediation professional to sign; and four clear statements — that all project areas are free from visible mold, and visible dust and debris; that all work was completed in compliance with the remediation protocol; that all identified underlying causes have been remediated; and that the project is verified as complete.

The final status report — the document owed when the project does not pass — carries six: the same five data elements, plus any conclusions the professional has drawn. It drops the signature area and all four statements, and it adds the conclusions. It is not the passing document with a sentence taken out, and a template that produces one shape for both outcomes is wrong on one of them.

The signature area is the piece that surprises people. It is for the remediation professional — a different signer, certifying their own work — so it is issued blank. Pre-filling it, or folding it into the assessor's own certification, defeats the point of a jointly executed document.

Cited: DC 20 DCMR §3299.1

Ten days, three recipients

§3204.6(c): "Within ten (10) days after successful completion of remediation activities, provide a verification report to the client, the current resident of the unit, and the appropriate indoor mold remediation professional." Three recipients, and in a rental the current resident is not the client.

The clock attaches to the verification report only. The assessment report and the protocol have their own delivery duties at §3204.6(a) and (b), with no deadline and a different recipient list — so a ten-day reminder shown on those documents would state a rule the District does not have.

Cited: DC 20 DCMR §3204.6(c)

What has to appear on every document you issue

§3204.6(d): "In all issued reports, protocols, or other documents, include the date when the document was issued to the client and the current resident of the unit and all indoor mold assessment professionals' names, license numbers, and, if applicable, business name and addresses."

Note what is absent. The District wants your license number and says nothing about an expiration date — that is a Texas requirement, and demanding it of a District assessor would be asserting a rule the District never wrote. What the District does want, and what most letterheads leave off, is the business address.

One warning if you go and read this rule yourself. The 2021 amendment (68 DCR 5018) replaced §3204.6 wholesale and this duty now sits at (d); copies citing §3204.6(e) are quoting the superseded 2016 lettering. When you pull the section from the DC Register's rule list, take the row labelled Adopted Rule — the list also serves a 2022 notice of proposed rulemaking that was never adopted and uses a third lettering of its own.

Cited: DC 20 DCMR §3204.6(d)

What MoldMind does about it

MoldMind writes every element these rules name, selects the verification report or the final status report from the determination you recorded rather than from a template choice, and puts the issue date, name, license number and business address on every document it issues. It flags what it cannot find in a draft before you finalize it, and it reminds you of the ten-day delivery duty at the point you email the report — not before.

Nothing here certifies your work, and no software can. Compliance is a legal conclusion; the checklist catches omissions, and the judgment and the signature stay yours.