Actual cash value is the cost to replace damaged property with new property of like kind and quality at the time of the loss, minus depreciation for age and wear. It is the default valuation method in commercial property policies, which means a ten year old roof gets paid as a ten year old roof.
You meet the term in two places: the valuation condition of your property policy and the settlement worksheet after a loss. The second one is where the surprise usually happens.

Actual Cash Value
The cost to replace covered property with property of like kind and quality at the time of the loss, reduced by depreciation for the age, use, and condition of the property that was lost.

How is actual cash value calculated?
Start with what a brand new equivalent would cost today, then subtract depreciation. Depreciation reflects how much useful life the property had already consumed. A $60,000 roof with a 20 year life, destroyed by hail in year ten, has an actual cash value near $30,000 before your deductible comes off. The adjuster will ask for installation dates, invoices, and maintenance records to set the depreciation figure, so you should keep those documents somewhere that will not burn with the building.
The valuation happens at the time of the loss, not when the policy was written. Prices move. A limit that matched values two years ago can be short today, which also matters for the coinsurance calculation that runs on the same at loss values.
Actual cash value vs replacement cost: what is the difference?
The Building and Personal Property Coverage Form CP 00 10 values losses at actual cash value unless replacement cost is activated by an X on the declarations. Replacement cost pays with no deduction for depreciation, so the ten year old roof gets paid as a new roof. That is the whole difference, and on older buildings it can be the difference between rebuilding and closing.
Even when replacement cost is activated, certain property stays at actual cash value, including awnings, outdoor equipment, and property of others unless a separate extension is added to the declarations.
What should brokers watch on ACV valuations?
For professionals: check the valuation entry on every renewal, because carriers increasingly force older roofs to actual cash value by endorsement, and a client who believes they bought replacement cost will not read the endorsement until after the hailstorm. Document the offer and the client's choice in the file. Also confirm which valuation the coinsurance limit was built on. A limit set from replacement cost values but a policy valued at ACV leaves premium on the table, and the reverse leaves the client underinsured.
Frequently asked questions
Is actual cash value the same as market value?
No. Market value reflects what a buyer would pay and includes land, location, and demand. Actual cash value ignores all of that. It is the cost to replace the property new, minus depreciation, so ACV can sit far above or below market value.
How do adjusters determine depreciation?
They compare the property's age against its expected useful life, adjusted for condition and maintenance. Adjusters ask for purchase invoices, installation dates, and service records. Better documentation generally means less aggressive depreciation, so keep records for roofs, HVAC, and major equipment off site.
Can I switch from ACV to replacement cost?
Usually yes, by having replacement cost marked on the declarations of CP 00 10, typically at renewal. Expect a higher limit requirement and more premium, since the insurer is now paying new for old. Some older roofs and buildings may not qualify.
This definition is for educational purposes. Your policy's specific terms, conditions, and endorsements control. Talk to a licensed broker about your actual exposures.