Soot & Odor Removal Cost Calculator
Price soot cleaning plus the odor treatments (ozone, thermal fogging, HEPA) that finish a fire cleanup — from the rate and treatment cost on your quote.
Calculator
Removing soot from 500 sq ft at $3.00/sq ft plus $400.00 of odor treatments (ozone/thermal fog/HEPA) is about $2,090.00. Odor removal often needs several passes. Enter your quoted price; a planning estimate, not a bid.
Once the structure is repaired and surfaces are wiped down, one problem often remains: the smell. Soot removal is the mechanical part — HEPA vacuuming and wiping residue off surfaces — while odor removal is the finishing part, using ozone generators, thermal fogging or hydroxyl treatment to neutralize the odor molecules the cleaning missed.
This calculator separates the two so you can see what the deodorizing actually adds. The cleaning is priced by area; the odor treatments are entered as line items from your own quote.
Formula
The estimate follows one clear identity:
total = (area_sqft × $/sq ft + treatments) × (1 + contingency%)
- area_sqft × $/sq ft — mechanical soot cleaning (HEPA vacuum + wipe-down) over the area.
- + treatments — ozone, thermal fogging and HEPA/air-scrubber passes, priced as line items.
- × (1 + contingency%) — a buffer for the extra passes stubborn odors often need.
All prices are yours to enter; nothing is hardcoded.
Worked example
Take 500 sq ft of sooty surfaces. Your quote lists $3/sq ft for cleaning and $400 for odor treatments, with a 10% contingency:
(500 × $3 + $400) × 1.10 = ($1,500 + $400) × 1.10 = $2,090
Odor work is rarely one-and-done. Deep or protein-smoke smells often need two or three passes; the contingency absorbs that so the estimate stays honest.
Ozone, thermal fogging and hydroxyl
The right deodorizing method depends on the smoke and the space. Ozone is powerful and reaches cavities, but the area must be unoccupied (ozone is a respiratory hazard) and porous items may need to be present to be treated. Thermal fogging recreates the way heat carried smoke into materials, so the deodorizer follows the same path. Hydroxyl generators are slower but safe to run in occupied spaces. HEPA air scrubbers pull particulate out of the air throughout — size those with the air scrubber / negative-air CFM tool.
Soot itself matters for health and surfaces: it is acidic and will etch metal, glass and finishes if left in place, and fine particulate is a respiratory irritant. Prompt HEPA cleaning limits secondary damage. Contents that cannot be cleaned on-site are handled as a pack-out.
Not every surface is worth cleaning. Restorers make a clean-versus-replace call for each material: sealed, non-porous surfaces (glass, sealed metal, glazed tile, finished wood) usually clean up well, while porous ones (raw drywall, insulation, ceiling tile, unfinished wood, carpet pad) often cost more to clean than to replace — and may never fully release the odor. Getting that split right is what keeps the estimate realistic: paying to clean an item that should have been replaced is money spent twice. Document the condition of anything borderline with photos before work starts, both to justify the scope and to support an insurance claim.
This is a planning estimate, not a bid. Ozone and other treatments have safety requirements — a licensed, insured, IICRC-certified contractor should perform and confirm the work.
Reference table
Typical planning bands for the labor-and-materials rate — a sanity guide only. Enter the rate from your own written quote; costs vary with severity, materials, access and local labor.
| Work type | Typical $/sq ft (labeled band) | What drives it |
|---|---|---|
| Structural fire damage | $15–$40/sq ft | Char depth, framing/drywall replacement, severity multiplier |
| Smoke & soot cleaning | $3–$8/sq ft | Residue type (wet vs dry smoke), surface area, sealing |
Source: labeled IICRC/industry planning bands — see the fire & smoke cost bands table and sources.