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The most common mold job in the DMV — finished lower levels built tight against below-grade block, with no drainage correction.
Book a free inspection
Pick a time on the calendar, or call and we will get you in today.
Pick an inspection timeActive water right now? Call 202-798-7663 instead of booking a slot — mold starts in 24–48 hours.
A finished basement in this region is a mold problem waiting for a trigger. Carpet and pad sit on a slab that wicks; paper-faced drywall runs to the floor against block that is holding back saturated clay; the space is a half-story below grade with no dedicated dehumidification. Then a sump fails during a storm, or the grading settles toward the house, and the whole floor is wet by morning.
Doing this properly means the finish comes out, the source gets corrected — grading, downspout extension, cold-joint seepage, sump capacity, vapor control — and the rebuild uses assemblies that survive being below grade. Otherwise the same wall is back on our schedule in two years.
Pricing
| Scope | Typical range |
|---|---|
| Partial wall or one section | $1,200 – $3,000 |
| Full finished basement, removal and dryingCarpet, pad, drywall, base, insulation | $4,000 – $12,000 |
| Sump pump replacement with battery backup | $900 – $2,200 |
| Interior drainage and grading correctionQuoted after the inspection | $3,000 – $15,000 |
| ReconstructionPer scope — we recommend below-grade-rated assemblies | Quoted per scope |
Typical range for this market — not a quote. Every property is different, and the number that matters is the written scope you get after the free inspection.
Before we arrive
In order. The first two matter more than everything after them.
Code & jurisdiction
The rules for this work are not the same across the three jurisdictions we serve. Pick yours for licensing, permits, and tenant rights.
How the work runs
No hand-offs, no second contractor to hire for the rebuild, and no testing done by the same people who did the removal.
A licensed technician walks the property with moisture meters and a thermal camera, finds the water source, maps the affected square footage, and photographs everything your insurer will ask about.
You get a written scope and line-item estimate the same day, built in the estimating format carriers expect — plus the photo log and moisture readings that support the claim.
The work area is sealed in 6-mil poly with a negative-air machine and HEPA filtration so spores are not pushed into the rest of the house while we work.
Non-salvageable porous material is cut out and bagged, framing and salvageable assemblies are HEPA-vacuumed and treated with an EPA-registered antimicrobial, then the space is dried to a documented moisture target.
An independent hygienist samples the area and issues a clearance report. We do not test our own work — the document is yours, and it is what a buyer, a lender, or a tenant will accept.
Remediation without repair guarantees a callback. We correct the roof, siding, window, flashing, or grading failure that let water in — then put the drywall, paint, and flooring back.
Straight answers
Sometimes, if it was clean water, it was caught inside 24 to 48 hours, and moisture readings come back to target. Once it has been wet for days, or the water was a sewage backup, the paper facing has fed growth and it comes out.
In most below-grade space in this region, yes. A properly sized unit holding relative humidity under 55% is the cheapest insurance available against a repeat.
Sump failure and burst pipes are commonly covered; groundwater and surface flooding usually need separate flood coverage. Sewage backup needs a specific endorsement. We document the source so the claim reflects what actually happened.
What we do
Every service page carries the typical price range, what the code requires in that jurisdiction, and the steps to take before anyone arrives.
Moisture mapping, thermal imaging, and independent lab sampling — so you know what you have before anyone sells you a remediation.
See pricing & steps →Containment, negative air, removal, and independent clearance — with the leak that caused it repaired under the same contract.
See pricing & steps →Stachybotrys handled to the same containment standard as everything else — because the response does not change with the species.
See pricing & steps →The most common mold job in the DMV — finished lower levels built tight against below-grade block, with no drainage correction.
See pricing & steps →Vented dirt crawl spaces in a Mid-Atlantic summer are mold factories. Removal, then encapsulation so it stays fixed.
See pricing & steps →Almost always a roof leak or a ventilation failure. We remove the growth and correct whichever one caused it.
See pricing & steps →24/7 emergency extraction and structural drying — the 24-to-48 hour window where a water loss has not become a mold loss yet.
See pricing & steps →Growth in the air handler or duct liner does not stay in one room — it gets distributed to every register in the building.
See pricing & steps →Free, written, no obligation. If it turns out you do not have a mold problem, we will tell you that and leave — it costs you nothing to find out.