Property Damage Calculator

Published by The Click Lab Agency LLC. Last reviewed September 2026. Not legal advice.

Property damage claims arise from vehicle accidents, natural disasters, theft, vandalism, negligence, and intentional misconduct. The key question in most claims is whether the policy or defendant pays replacement cost value (RCV — what it costs to replace the property today) or actual cash value (ACV — replacement cost minus depreciation). For vehicles, a separate diminished value claim may also be available from the at-fault driver's insurer after repairs. This calculator estimates your potential recovery based on these frameworks.

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How Property Damage Claims Are Valued

Property damage claim valuation hinges on two fundamental questions: what standard applies (RCV or ACV), and how does the insurer or at-fault party calculate depreciation. Understanding these concepts before you file a claim — or before you accept a settlement — is the most practical thing you can do to protect your recovery.

RCV vs. ACV: The Core Distinction

Replacement cost value pays what it costs to replace the damaged property with a new equivalent at current prices, without any deduction for the property's age or condition. Actual cash value deducts accumulated depreciation — you receive the property's fair market value before the damage, not what it costs to replace it. The gap between these figures grows dramatically with property age. Under the calculator’s straight-line model, a 5-year-old vehicle with a $30,000 replacement cost loses 15% a year, leaving an ACV of $7,500 — steeper than most used-car markets, which is why a vehicle’s ACV should be checked against comparable listings. For a 15-year-old HVAC system with a $8,000 replacement cost, ACV at 10% annual depreciation might be under $1,000 — a fraction of what it actually costs to replace.

Whether your homeowners or commercial policy pays RCV or ACV is specified in your declarations page. Most policies default to ACV for contents and require a separate RCV endorsement. For auto total losses, nearly all policies pay ACV regardless of endorsements. Review your declarations page carefully before assuming RCV applies to your claim.

Depreciation and How to Challenge It

Insurance adjusters apply depreciation schedules that vary by carrier, property type, and individual item. These schedules are not always disclosed proactively. If you believe the insurer's depreciation calculation understates your claim, request the itemized depreciation worksheet. Compare the rates applied to your property against independent market data: comparable vehicle listings, contractor replacement estimates, and published property value databases. Most property insurance policies include an appraisal clause that allows either party to invoke a neutral valuation process when the parties disagree on the amount of loss.

Diminished Value

A repaired vehicle is worth less on the market than an identical vehicle with a clean history. This diminished value (DV) is recoverable from the at-fault driver's insurer in most states, regardless of how well the repair was performed. Insurers routinely deny or underpay DV claims on first submission. Many insurers start from the “17c” formula, which grew out of a Georgia case: 10% of pre-accident value times a damage multiplier and a mileage multiplier. Because it can never exceed 10% of the car’s value and drops to zero above 100,000 miles, it often produces a low number; an independent appraisal based on actual resale data is the usual way to challenge it.

Types of property damage claims and who pays

Claim typeWho paysValuation basisDeductibleDiminished value
Homeowners (dwelling)Your insurerUsually replacement cost; insurer often pays actual cash value first and the rest after repairs are completedYesNot covered
Homeowners (contents)Your insurerActual cash value unless you bought replacement cost coverage for contentsYesNot covered
Your own auto (collision or comprehensive)Your insurerCost of repair, or actual cash value if the car is a total lossYesGenerally not covered; Georgia is the main exception
Claim against an at-fault person or businessTheir liability insurer, up to the policy limitCost of repair or pre-loss value, plus loss of use (such as a rental car)NoRecoverable in most states for vehicles
FloodNational Flood Insurance Program or a private flood policy (standard homeowners policies exclude flood)Contents at actual cash value; building at replacement cost only for a primary residence insured to at least 80% of its replacement costYes, separateNot covered

Your policy’s declarations page and loss settlement clause control your claim; this table describes the common arrangements.

Worked examples

These use the calculator’s depreciation rates so you can reproduce them.

Example 1 — Stolen laptop, contents coverage

A laptop that costs $1,500 to replace is stolen at 3 years old. At 12% a year the calculator’s ACV is $1,500 × (1 − 0.36) = $960. With actual cash value coverage and a $500 deductible, the insurer pays $460. With replacement cost coverage for contents, the insurer typically pays the $460 now and the $540 of withheld depreciation after you buy the replacement, for $1,000 in total.

Example 2 — Hail damage to a roof

A roof costs $18,000 to replace and is 12 years old. The calculator’s 1% a year rate for structures gives an ACV of $15,840; many insurers depreciate roofs faster, so check the adjuster’s worksheet. On a replacement cost policy with a $1,000 deductible, the first check is $14,840 and the $2,160 of withheld depreciation is released when the new roof is finished, for $17,000 in total. Some policies now settle roofs at actual cash value only; if yours does, the claim ends at $14,840.

Example 3 — Diminished value after someone else hits your car

Another driver runs a stop sign and hits your car, which was worth $25,000 before the crash and has 30,000 miles. The at-fault driver’s insurer pays for repairs and a rental. For diminished value, the 17c formula gives $25,000 × 10% × 0.50 (moderate damage) × 0.80 (20,000–40,000 miles) = $1,000. An independent appraisal comparing sale prices of similar cars with and without accident history may come in higher; that appraisal is your evidence if you dispute the offer.

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What this calculator does not do

It does not read your policy. It uses straight-line depreciation at fixed rates by property type (15% a year for vehicles, 1% for structures, 12% for personal property, 10% for business equipment), which are publisher assumptions; your insurer’s schedule controls. It does not subtract your deductible, apply policy limits or sublimits, recognize flood or earthquake exclusions, or add loss-of-use and rental costs. Its diminished value figure is the 17c result for one moderate-damage, mid-mileage case, not a valuation of your car. Use it to understand the moving parts, then compare against the adjuster’s itemized estimate.

Where to get help

Ask your insurer for the adjuster’s itemized estimate and depreciation worksheet; you are entitled to see how the number was built. If you disagree on the amount of the loss, most property policies include an appraisal clause that lets each side hire an appraiser, with an umpire to break ties. Your state department of insurance takes complaints about claim handling at no charge. For large or disputed losses, a licensed public adjuster (paid a percentage of the claim) or an attorney may help; for a claim against an at-fault driver, you can negotiate with their insurer directly or use small claims court for smaller amounts. If you would like The Click Lab to pass your details to an attorney in its network, the optional form below does that; it is a disclosed referral product, and our privacy policy explains exactly what is shared.

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