Reading permit activity for underwriting and claims context on insured properties

Who this is for

This is written for commercial property underwriters and claims teams who manage portfolios of insured properties, from regional carriers to national commercial lines groups.

It is aimed as much at claims adjusters and field examiners as it is at underwriters working a renewal, since permit context can surface at either point in a policy's life, not only when a file crosses a desk for annual review.

Portfolio risk managers overseeing catastrophe and construction exposure across a book of insured properties will find the same review habit useful when trying to understand where active construction sits within a broader portfolio at any given moment.

The problem

Underwriters typically rely on prior property records and appraisals to assess an insured property's value and risk, and often discover that a property has undergone significant renovation or new construction only at renewal, or in a worse case, after a claim is filed on a property with active construction work that the underwriting file did not reflect.

A national carrier's underwriting file for a distribution warehouse, for instance, might still reflect the property as it stood at the last appraisal three years earlier. In the meantime the insured has added a mezzanine level and reconfigured the loading dock, all properly permitted with the city, none of it reflected in the file the underwriter works from at renewal, and none of it discovered until a claims adjuster arrives on-site after a loss and finds a building that does not match its own record.

Why permit activity matters

A permit filed on an insured address is a public record that some construction work is planned or underway, which can be useful context ahead of a renewal or when a claim is filed on a property with an open permit. It does not confirm that the work has been completed, what it actually cost, or that an insured value should be adjusted by any particular amount, since a declared permit value is self-reported and can differ from actual project cost.

For claims handling, knowing a property has an open permit is relevant context for understanding conditions at a site around the time of a loss, but the permit's dates and scope should be confirmed independently rather than assumed from the filing alone.

That gap is more consequential than it might sound, because active construction and elevated exposure are becoming a bigger share of what carriers underwrite. Builder's risk and course-of-construction premium volume has grown sharply as project costs and complexity rise, with one industry estimate putting the global builders risk market at roughly $5.36 billion in 2024 and climbing toward $8.75 billion within a decade ("Builders Risk Booms to $8.75bn"). Underwriters who treat an open permit purely as paperwork, rather than as a cue to ask what stage a project is actually at, are underwriting a moving target as if it were fixed.

What to look for

Permits for major building system work, such as roofing, electrical, or HVAC replacement, are relevant because they often coincide with meaningful changes to a property's value and hazard characteristics. New construction and addition permits point to potential changes in insured square footage, while major interior renovation permits can flag a period of elevated exposure while work is underway, since an active construction site typically carries a different risk profile than occupied, finished space. Demolition and structural permits are worth flagging as well, since they often precede a period where a property sits partially vacant or is covered under a builders risk form rather than its standard commercial property policy.

It also helps to note not just that a permit exists, but roughly where a project sits in its life cycle, whether it was just filed, is mid-construction, or has recently closed out, since that stage says more about current exposure than the permit type alone.

Where this falls short

A permit's declared value is not a firm project cost and should not be used directly to recalculate an insured value, since disclosed values and how municipalities report them vary widely and can diverge substantially from actual construction spend. A permit also does not establish when work actually started, finished, or whether it proceeded as filed, so treating a filing or closing date as a stand-in for a completion date, or assuming an open permit means work is happening on-site right now, both risk misreading a property's actual condition.

Underwriting files that rely on a single point-in-time permit lookup also miss the fact that municipal data reporting practices differ, so the volume and consistency of what carriers can see in one metro area often has little relationship to what is visible in another (National Association of Insurance Commissioners). A national book built on state-by-state permit visibility will have real gaps that no amount of careful review of the available data can fully close.