May 1, 2026
What makes fire and smoke damage restoration estimates complex? Fire and smoke damage restoration estimates are complex because damage is not linear — smoke travels through HVAC systems, wall cavities, and hidden spaces. Initial estimates are almost always significantly supplemented as hidden damage is uncovered.
Fire and smoke damage restoration is the most complex estimating challenge in the industry. Smoke follows air pathways invisible at the time of initial estimate. It travels through HVAC systems, penetrates wall cavities, and gets into building systems in ways that won’t be fully revealed until demolition. This is why fire and smoke jobs have the highest supplement rate of any restoration service type.
Immediate response activities — board-up, water extraction from firefighting operations, securing the structure — are time-sensitive and frequently under-documented. Every emergency services action must be documented with photos and time records at the time of performance. Common missed line items: standby time during active firefighting, security personnel, temporary power costs, haul-away and disposal.
The initial scope written within 24–48 hours is almost certainly incomplete — and should be presented to the adjuster as such. Setting the expectation of a phased scope approach at the beginning of a fire job is professional practice, not a negotiating tactic.
As demolition proceeds, concealed damage is revealed. Each discovery triggers a supplement opportunity. The supplement must be documented with photos at the time of discovery, tied to a specific cause, and submitted promptly — ideally within 72 hours of discovery.
HVAC cleaning and replacement, contents restoration and replacement, adjacent unit damage in multi-family buildings, and structural scope from firefighting water are the four categories most consistently underestimated in initial fire scopes.
Fire and smoke jobs typically generate supplement volume of 25–45% of the initial estimate. A $50,000 initial estimate commonly generates $12,000–$22,000 in supplemental billing.
IICRC S700 is the Standard and Reference Guide for Professional Fire and Smoke Damage Restoration. It establishes protocols for fire damage assessment, cleaning procedures, deodorization, and documentation.
Mike McCabe is The Profit Detective — a Master Cleaner, Master Restorer, and 36-year restoration industry veteran who has consulted on fire and smoke restoration operations across North America.
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