"How much does mold remediation cost?" is usually the first question we get, and it's a fair one — but it doesn't have a single answer. Two houses with mold in similarly sized rooms can end up with very different quotes once you look at what's actually driving the work. Here's what we're looking at when we scope a job.
How much area is affected
This is the obvious one, but it's not just square footage of visible growth. Mold spreads inside wall cavities and under flooring in ways you can't see from the surface, so part of the inspection is figuring out how far it's actually traveled — not just how far it looks like it's traveled.
What's causing the moisture
Mold remediation without fixing the moisture source is a temporary fix. A slow roof leak, a failed sump pump, condensation from poor ventilation, and a one-time flood event all call for different scopes of work — and in some cases, different trades entirely before remediation even starts. Identifying the source is part of the inspection, and it affects both the price and whether the problem comes back.
What materials are involved
Drywall and insulation are usually straightforward to remove and replace. Mold that's reached hardwood subfloor, cabinetry, or structural framing takes more careful, more time-consuming work, and sometimes means bringing in other trades to rebuild what comes out.
Whether HVAC is involved
If mold has reached ductwork or an air handler, that's a separate piece of the job with its own containment and cleaning requirements — and it matters because HVAC is how a contained mold problem can spread to the rest of the house.
Containment and access
A contained crawlspace job and an occupied, finished basement don't cost the same to work in, even at a similar square footage. Tighter access, the need to protect and seal off living space, and whether the area is occupied during the work all factor into the scope.
Clearance testing
Once the work is done, independent clearance air testing confirms the space is actually clean before we call the job finished. That's a separate line item from the remediation work itself, and it's not one we'd recommend skipping — it's the only way to know the job actually worked.
Why we don't quote a number until we've seen it
Given all of the above, a number quoted over the phone without an inspection is a guess. What you get from us instead is a site visit, a clear written scope, and a firm quote before any work starts — so the price you're given is the price for what's actually there, not an estimate that changes once the walls come open.