By Jessica MartinezContributing Writer, Business & Finance, Encore Editorial
Things to know before buying property coverage
- Flood and earthquake are excluded from standard policies and need to be purchased separately.
- Replacement cost coverage, not market value, is what actually determines your payout after a loss.
- Protective devices like sprinklers and monitored alarms typically earn a real discount this tool does not model.
Location and construction drive the price more than you might expect
Commercial property insurance is priced on two big axes: what could go wrong and how much it would cost to rebuild. A wood-frame building in coastal Louisiana faces hurricane, flood proximity, and high replacement costs all at once, which is why coastal Gulf and Atlantic states carry some of the highest property rates in the country. California adds wildfire and earthquake exposure on top of already-high construction costs. Meanwhile, a masonry building in Nebraska or Wyoming can be insured at rates well below the national average because the claims frequency and replacement costs are lower.
The rate per $100 of insured value typically runs from around $0.50 for a concrete office building in a low-risk state up to $2.00 or more for wood-frame retail in a hurricane corridor. Contents coverage follows a similar structure but tends to be cheaper because equipment depreciates faster than buildings. For small businesses with both property and liability needs, bundling into a Business Owner's Policy often cuts the total premium by 10 percent or more compared to buying the policies separately. Check the general liability calculator to estimate the other half of a BOP.
Figures this estimator uses
The annual premium is a flat rate per $100 of combined building and contents value, multiplied by construction type and state. The 2026 figures behind the calculator are listed below.
| Input | Rate or factor |
|---|---|
| Base rate | $0.75 per $100 of insured value |
| Masonry / concrete factor | 1.0 |
| Mixed / joisted masonry factor | 1.25 |
| Wood frame factor | 1.50 |
| State factor range | 0.82 (Wyoming) to 1.40 (Louisiana) |