Cost & process · 2 min read
What determines the cost of commercial mould treatment
Why treated volume matters more than floor area, what else moves the scope, and why a number over the phone is worth very little.
Facilities managers ask for a ballpark before they ask for anything else, and it is a reasonable thing to want. The difficulty is that a figure given before anyone has seen the building is a guess, and guesses in this category are usually wrong in both directions.
Treated volume, not floor area
Diffusion fills a space. A warehouse with nine-metre ceilings and an office with a 2.7-metre ceiling can have identical floor plans and require very different treatment. Volume is the starting input, not square metres.
Scope
Airborne treatment, surface treatment, or both. Surface work is shaped by how much is visibly affected and how accessible it is — grout lines in an amenities block and the internals of an air handling unit are different propositions.
Access and timing
After-hours, weekend or staged work in an operating facility takes longer than the same treatment in a vacant tenancy. Buildings that cannot close, which is most of the ones we work in, cost more to work around.
Building conditions
HVAC layout determines whether the mechanical system is inside the treatment zone. Ceiling voids, plenums and cavities affect how the formula has to be deployed. Occupancy and moisture history affect how much is likely to be found.
Documentation
Baseline and post-treatment readings with a written report add to the scope. Where insurance, WHS obligations or accreditation are involved, that documentation is usually the most valuable part of the engagement.
Frequency
Scheduled programs are priced annually rather than per callout, and the per-visit cost falls as frequency and treated area rise. The larger economic argument is not the per-visit saving — it is that a managed building is far less likely to ever need remediation, which is a capital cost of an entirely different order.
How Myko handles it
A free site assessment, then a fixed-price written quote within one business day, with the scope itemised. The price does not move unless the scope genuinely changes, and then only with written approval. If the job turns out smaller than feared, the quote says so.