Dryer vents rarely appear on a property condition assessment scope. They should. A 300-unit property whose vents have never been cleaned carries a known cost, an unquantified fire risk, and a documentation gap that a seller has no incentive to disclose. Here is how to price it.
What You Are Actually Buying
Three separate things go wrong in a neglected vent system, and only one of them is lint.
Lint loading is the cheap problem — a cleaning cost, $18-35 per unit, fully quantifiable once you know the unit count and termination type.
Physical duct deficiencies are the real exposure: crushed sections, disconnected runs venting into wall cavities and ceiling spaces, foil or vinyl flex duct in concealed spaces (a code violation in most jurisdictions), missing or failed backdraft dampers, screened termination caps. These require remediation, and a property that has never been inspected has never counted them.
The documentation gap is the risk you inherit. NFPA 211 requires annual inspection. A property with no maintenance history is a property whose next dryer fire will be examined against a standard it demonstrably did not meet — and you will own it.
Where This Shows Up
Value-add acquisitions of 1980s-2000s garden product are the highest-risk category: old duct, original terminations, multiple ownership changes, no continuous maintenance file. Recently traded 2010s-vintage assets are the second: young enough that buyers assume everything is fine, old enough that eight to twelve years of lint has accumulated and nobody has ever looked.
The Diligence Scope Worth Ordering
A pre-close dryer vent inspection covering: every exterior termination photographed and assessed, sampled or full-property airflow measurement, duct material assessment at accessible points, connection and transition condition, and a prioritised findings report ranking buildings by risk. This is a fraction of the cost of a PCA and produces a hard number for the capex model.
Turning Findings Into Deal Terms
An inspection report gives you three options: a price adjustment reflecting the remediation number, a seller-funded escrow for the work, or a known day-one capex item you have priced and can execute against. Without the inspection, you have none of these — you have a surprise in year two.
The Post-Close Move
Whatever the diligence finding, the first-year action is the same: clean the property, document every unit, remediate the deficiency list, and open a maintenance file. From that point the asset has a continuous compliance record — which is worth real money at your own disposition, and which the next buyer’s diligence team will ask for.