How the restoration cost calculator works

The formula

For each line item that your answers switch on:

line = unit rate (low / high) × quantity

Then, for the whole estimate:

total = (sum of lines) × category multiplier (water only) × Charlotte labor index for the mode

Typical is the midpoint of low and high. Lines the sources mark as optional (an emergency call-out, water and extinguisher residue after a fire, a possible mold add-on when a home has been wet 1 to 3 days) count toward the high end only, so uncertainty widens the range instead of being guessed at. There is no other adjustment, rounding rule, or hidden factor. The "Where the money goes" table on the tool shows the raw lines, the subtotal, each multiplier, and the total.

The two multipliers

Water category (IICRC S500)

HomeAdvisor lists one per-square-foot rate per water category. The multiplier is that category's rate divided by the Category 1 rate: Category 1 (clean water) 1.00×, Category 2 (grey water) 1.50×, Category 3 (black water) 2.14×. It is applied to every water line, including removal and rebuild, because the sources fold PPE, containment and contaminated-material disposal into the higher category rates rather than breaking them out. No source publishes a separate Category 3 PPE or disposal line, so the tool does not add one.

Charlotte labor index

Materials and equipment are held at national prices. Only labor is localized, using BLS Occupational Employment and Wage Statistics (May 2025) mean hourly wages for the Charlotte-Concord-Gastonia metro against the national mean, for three occupations that do this work:

SOC	Occupation	Charlotte MSA mean	National mean	Ratio
47-4041	Hazardous Materials Removal Workers	$21.68	$27.13	0.7991
47-2061	Construction Laborers	$22.19	$25.02	0.8869
47-2031	Carpenters	$25.70	$31.55	0.8146

Wage ratio = simple mean of the three = 0.8335 (employment-weighted alternative 0.8662; all-occupations ratio for reference 0.9878). Per-mode index = 1 − labor share × (1 − wage ratio), using the mid labor share: water 0.4 → 0.9334; fire 0.6 → 0.9001; mold 0.6 → 0.9001. The labor shares come from restoration-industry blogs (30–50% water, 50–70% fire and mold) because no major cost-guide publisher states one; they are flagged secondary in the source table.

Stated assumptions

• Cabinets. Removal is priced per job and installation per linear foot; no source prices cabinets per square foot. The tool takes the affected cabinet run as one wall of a square room with the affected area: linear feet = square root of the area, rounded up (100 sq ft → 10 linear ft; 500 sq ft → 23 linear ft). Stock-cabinet rates are used.
• Time wet. No source gives a mold probability by hours wet, so the field is a switch, not a percentage: under 24 hours, no mold line; 1 to 3 days, the mold add-on is optional (high end only) because the EPA's 24-to-48-hour drying window has passed; 3 days or more, or mold visible, the add-on is on.
• Drying equipment days. The base extraction rate already includes drying per the sources, and the only per-day equipment figure comes from a weak source with no sourced days-per-job, so extended drying is not summed. Longer wet time raises cost through the mold switch only.
• Basement. HomeAdvisor's basement flood cleanup rate replaces the standard extraction line (not on top of it). Crawl space adds a per-square-foot cleaning line. Upper floor adds a ceiling-repair line for the floor below. Slab: no source lists an adjustment, so none is applied.
• Fire area. "Area affected" is the floor area the fire, smoke or soot reached; for whole-house soot, enter the home's square footage. Structural lines use the same area. Per-room smoke deodorizing, per-job soot removal and thermal fogging are listed in the sources as alternatives to lines already applied, so they are not summed. Board-up assumes one opening.
• Mold location. The per-square-foot rate × visible area is floored at HomeAdvisor's whole-job range for the location you pick (the sources' "clamp to the location range"). Containment is billed hourly with no hours-per-job figure in any source, so it is not summed separately. Under about 10 sq ft the tool shows the EPA's do-it-yourself note.
• ZIP. The 174-ZIP list covers Mecklenburg, Cabarrus, Gaston, Union, Iredell, Lincoln and Rowan (NC) and York and Lancaster (SC). A ZIP outside the list gets a note and the same Charlotte pricing; there is no per-ZIP price difference in the sources.
• Reference-only figures. Hourly restoration labor ($70–$200/hr) is shown in the source table for context and is never summed.

Every source, every number

Rows marked "(corroboration)" carry no figure of their own; they show a second source for the row above. "(secondary)" = contractor or SEO blog, used only where no major publisher gives the figure. "(stale)" = page older than two years, corroboration only. "missing" means no source gives that figure and the tool does not use one. Angi, HomeGuide and Forbes Home blocked every fetch and are not used; BLS figures come from the BLS public API because bls.gov HTML also blocked fetches. All rows retrieved September 25, 2026.

Update log

Date	Change
2026-09-25	First release. All unit rates pulled and cited; category multipliers 1.00 / 1.50 / 2.14; local index from BLS OEWS May 2025; 174-ZIP metro list.

Prices are refreshed quarterly. The date shown on the tool ("Prices last updated") is the retrieval date of the current table.

Author

Written and maintained by the Thomas Town Digital editorial team, which builds and operates DamagePros Direct. We are not a restoration contractor and we do not inspect or price jobs. Corrections and source suggestions: use the contact page.

Try it: the calculator, or the guides for water, fire and mold.