RestoreWorth.
Our methodology
DATA & METHODOLOGY / MODEL V7 · DATA 2026-09-27

Every assumption.
Out in the open.

A useful estimate should tell you where it came from.
And, just as importantly, what it cannot tell you.

National averages, each by its publisher’s own method.Published by homeguide.com, angi.com, homeadvisor.com, captured 2026-09-27. Not a sample of invoices, and not adjusted to your location. Not reviewed by a restoration professional. Every published figure is checked against the page it cites; the way they are combined is RestoreWorth’s own, and unreviewed.
01 / FOLLOW THE NUMBERINPUT → PUBLISHED → ASSUMPTION → RANGE
USER-PROVIDED

Your area & material choices

The form records an approximate affected area, selected materials and scenario-specific observations. These values are user-provided, not independently measured.

PUBLISHED = QUANTITY (FLOOR, WALL OR HOME AREA) × PUBLISHED RATE + ADDITIVE FLAT FEESASSUMPTION ROW = CHANGE IN THE ROUNDED RUNNING TOTALTOTAL = ∑ DISPLAYED ROWS
02 / THE EVIDENCE LEDGERWHAT EXISTS. WHAT DOES NOT.

A clear line between
known and assumed.

INPUT OR CLAIMSTATUSWHAT THAT MEANS HERE
Your form inputsUSER-PROVIDED

Approximate observations, not verified dimensions or a diagnosis.

Per-square-foot and flat-fee ratesPUBLISHED

Quoted verbatim from homeguide.com, angi.com, homeadvisor.com on 2026-09-27. National averages, each built by its publisher’s own method (contractor estimates, post-project surveys or labor statistics).

Time, depth, roomsASSUMED

RestoreWorth coefficients, applied to the base row only. No publisher quantifies them; each is a separate row in the result, never folded into a published figure.

Local and regional pricingNOT CONNECTED

No state, metro or ZIP adjustment. No observed invoice, quote or paid price is in the model.

Professional reviewNOT DONE

No restoration contractor has reviewed how these published figures are combined.

Damage visualizationSCHEMATIC

Conceptual SVG. Not measured moisture, hidden damage or a forecast.

Statistical confidenceNOT AVAILABLE

The low and high are the publishers’ own quoted bounds, not a confidence interval or a probability. Where a publisher leaves its high end open (a “+” after the figure), the row says so.

Official safety guidanceREFERENCED

EPA / CDC safety context only. These sources do not validate any price.

03 / KEEP THE LIMITS IN VIEW

What this number
doesn’t know.

The model does not know your ZIP code, actual labor rates, hidden damage, structural condition, taxes, permits, contents, temporary housing or insurance terms. It cannot establish necessary remediation or safe occupancy.

Do not use this site to approve, reject or negotiate a quote. Use it to see what a restoration scope involves and what published national averages say about it. The prices are sourced and quoted; what is still missing is local pricing and a review of the model by a restoration professional.

The publisher scope band and the second-publisher cross-check shown beside the result are coherence checks, not components of it: a whole-job band and a per-square-foot rate measure different things. Time-based visuals are schematic and are not a claim that damage spreads at a specific speed.

One loss, several entry pages. Contaminated water in a basement can be entered through three calculators, and each follows a different published guide: Sewage backup (HomeGuide’s sewage cleanup guide: sewage cleanup at $7–$15+ per square foot); Water damage (HomeGuide’s water damage guide: water removal and drying, per square foot, priced by water category ($9–$12 for Category 3 black water)); Flood & basement (Angi’s flooded basement guide: a national average of $3–$7 per square foot, with assessment, pump-out and deodorizing quoted as separate fees). The guides do not cut the job the same way, so the same inputs return different figures. RestoreWorth does not merge or average them: when a scenario can be described on more than one page, the result shows what the other pages return for the same inputs, with a link that opens each page on them, and the export repeats it. Reading the three as the same loss is our reading, not a publisher’s statement.

04 / WHERE EVERY FIGURE COMES FROM

Published pages.
Rates quoted, not altered.

Every rate or fee in a PUBLISHED row is on one of these pages, captured on 2026-09-27 and reproduced without modification. How it is applied to your inputs is our reading, labeled where it matters. Each is a national figure built by its publisher’s own method: HomeGuide from the estimates homeowners receive from contractors; Angi and HomeAdvisor from surveys of their customers about what the project cost, paired with labor statistics, market research and expert interviews. None is a representative sample of invoices, and none is adjusted to any location.

angi.com

articles/flooded-basement-cleanup-cost.htm

Reference s6 · captured 2026-09-27

angi.com

articles/how-much-does-fire-damage-restoration-cost.htm

Reference s7 · captured 2026-09-27

angi.com

articles/how-much-does-it-cost-repair-water-damage.htm

Reference s8 · captured 2026-09-27

angi.com

articles/how-much-does-mold-remediation-service-cost.htm

Reference s9 · captured 2026-09-27

angi.com

articles/ozone-smoke-removal-cost.htm

Reference s10 · captured 2026-09-27

homeadvisor.com

cost/disaster-recovery/clean-a-flooded-basement

Reference s11 · captured 2026-09-27

homeguide.com

costs/carpet-removal-cost

Reference s1 · captured 2026-09-27

homeguide.com

costs/fire-damage-restoration-cost

Reference s2 · captured 2026-09-27

homeguide.com

costs/mold-removal-cost

Reference s3 · captured 2026-09-27

homeguide.com

costs/sewage-cleanup-cost

Reference s4 · captured 2026-09-27

homeguide.com

costs/water-damage-restoration-cost

Reference s5 · captured 2026-09-27

And the parts no publisher prices

Not included: finding and repairing the cause, contents cleaning, pack-out and replacement, temporary accommodation, permits, laboratory testing, taxes, major structural repair. United States, national averages. No state, metro or ZIP adjustment is applied. The low and high are the publishers' own quoted bounds, not a statistical interval. Period: Publisher pages captured 2026-09-27; individual pages were published between 2025-08-22 and 2026-05-30.

05 / SAFETY CONTEXT, NOT PRICING EVIDENCE

Real sources. A precise purpose.

US EPA

A Brief Guide to Mold, Moisture and Your Home

Moisture, hidden mold and when contaminated-water damage needs experienced professionals. No pricing validation.

CDC

Safety Guidelines: Floodwater

Floodwater contamination and electrical hazards. No cost dataset or restoration quote benchmark.

CDC

Safety Guidelines: Reentering Your Flooded Home

Re-entry and electrical safety context. This site does not certify a property as safe.

Source pages reviewed for safety context on September 27, 2026. No affiliation, certification or endorsement is implied.

06 / PRIVACY, ANALYTICS & LOCAL STORAGE

No contact form in disguise.

RestoreWorth has no account system and no server that stores your scenario. “Save scenario” stores a copy in this browser’s local storage; “Remove saved scenario” deletes it. Export creates a plain-text report on your device. Hosting may maintain normal access logs. The fonts are served by this site: no request goes to a third-party font service. Instrument Serif, DM Sans and RW Mono (a renamed Latin subset of IBM Plex Mono) are used under the SIL Open Font License 1.1 (license text).

Google Analytics 4 measures page views and interactions on this site. Outside the European Economic Area, the United Kingdom and Switzerland, Google sets the cookies _ga and _ga_MVQG7T041F. In those countries analytics storage is refused by default: no analytics cookie is set, and Google receives only cookieless signals (Google Consent Mode). Google signals and ad personalization are turned off. The site shows no advertising.

With each page view Google receives the page address and the address of the page you came from. Some links on this site carry a scenario in that address: the homepage’s “Open full estimator” link and the “Open the … page with these inputs” links include the area, materials and other inputs of the scenario, so those values reach Google with the page view. Typing into a calculator does not change the page address. You can block Google Analytics with Google’s opt-out browser add-on; Google describes its own processing in its privacy policy.

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