Glossary

Fire protection class

The 1 to 10 number on a home insurance quote that reflects how close and well equipped the nearest fire department and water source are.

Also called: protection class, fire class, ISO class, fire department rating, ISO fire rating

Fire protection class is the figure insurers print on a quote to describe how well fires are fought at your address. A 1 is the best and a 10 the weakest. Most insurers take the number from the Public Protection Classification that Verisk assigns to the local fire district, though a few use their own grading.

Say one house sits on a hydrant street two miles from a staffed station, and another is seven miles out on a rural road with no hydrant. The first may be a Class 3 or 4, the second a Class 10. Everything else equal, the second house pays more for fire coverage, and some carriers will not write a Class 10 home at all or will limit the forms they offer. The size of the difference is each insurer's own filed factor, not a standard percentage.

Find the class on your quote and ask the agent to confirm it, because a house can be coded to the wrong district. If you are buying in the country, ask for it before you make an offer, since it can decide which companies will quote. The local fire chief can explain how the community was graded. Read Fire protection class (ISO PPC) and your rate, the rural homes: fire protection, wells and long drives guide, and see construction class for the other fire-related rating factor.

Last reviewed October 10, 2026

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Related terms

Public Protection Classification (PPC) A 1 to 10 grade, assigned by Verisk's ISO unit, of how well a community's fire department, water supply and dispatch can fight a house fire. Construction class The category an insurer assigns a house by its walls and structure, such as frame, masonry veneer, masonry or fire-resistive, used for rating and rebuild cost. Rating territory A geographic area, often a ZIP code or county, that an insurer prices as a unit because losses from weather, fire and theft differ from place to place. Underwriting guidelines An insurer's internal rules for which homes it will write, which it will decline, and what conditions, limits or surcharges apply to the ones it accepts. Loss history The record of insurance claims tied to you and to your property over the past several years, which underwriters use to judge risk and set price.

Related guides

How to insure a barndominium Insurers treat a barndominium as a house with a barn attached. How they classify steel and post-frame builds, what the shop changes, and what to send them. Fire protection class (ISO PPC) and your rate Your fire protection class grades local fire service from 1 to 10. How split classes work, why a hydrant 1,000 feet away matters, and how to find your class. Insuring a log home Log homes cost more to rebuild and hit exclusions for settling, rot and insects. How insurers classify them, how to set the limit and why upkeep records matter. Rural homes: fire protection, wells and long drives Rural homes pay for distance from the fire station, wells, septic and outbuildings. What drives price and availability, and what to do about it.

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