Vacant Building Insurance: The 60 Day Vacancy Clause and How to Inspect Empty Floors

• U.S. office vacancy was 18.3 percent in the second quarter of 2026, and Texas metros ranged from 17.8 percent in San Antonio to 24.6 percent in Dallas Fort Worth in the third quarter.
• Under the standard ISO form, a building owner's building is vacant unless at least 31 percent of its total square footage is rented and used, or used by the owner, for customary operations.
• After more than 60 consecutive days of vacancy, losses from water damage, sprinkler leakage, vandalism, glass breakage and theft are excluded, and other losses are reduced by 15 percent.
• Some policies go further. In July 2026 an Illinois appeals court upheld the denial of a flood claim of nearly $300,000 on a long vacant property.
• Insurers expect empty space to be heated, inspected at least weekly and documented. A dated, photographed record of every visit is the strongest protection an owner has.

The office market is recovering, but slowly. CBRE put the U.S. office vacancy rate at 18.3 percent in the second quarter of 2026, down 30 basis points in the quarter (CBRE).

Texas is higher than the national figure in most large markets. In the third quarter of 2026, CBRE reported:

• Dallas Fort Worth: 24.6 percent (CBRE).
• Austin: 23.6 percent, up 40 basis points with a new tower delivery (CBRE).
• San Antonio: 17.8 percent (CBRE).

Behind those averages are whole floors, whole suites and some whole buildings sitting empty for months. Empty space is where leaks run longest and where vandals and thieves find easy targets. It is also where the insurance policy quietly changes.

Most commercial property policies use or adapt the ISO Building and Personal Property Coverage Form. Its vacancy condition works in three steps, as explained by IRMI (January 2026):

1. The 31 percent occupancy test

For an owner or general lessee, the building is vacant unless at least 31 percent of its total square footage is either rented to a tenant who uses it for customary operations or used by the owner for customary operations. Common areas count in the total, and a signed lease is not enough: the space has to be in use.

2. The 60 day trigger

The clause only bites if the building has been vacant for more than 60 consecutive days before the loss.

3. What is excluded and what is reduced

• Not covered: vandalism, sprinkler leakage unless the system was protected against freezing, building glass breakage, water damage, theft and attempted theft.
• Reduced by 15 percent: losses from any other covered cause, such as fire.

For a tenant, the form looks at the suite it rents rather than the whole building, and treats the suite as vacant when it no longer holds enough business property to carry on customary operations. That means a tenant that has moved out but still holds a lease can lose water damage coverage for its suite even in a busy building.

Many insurers sell a vacancy permit endorsement that restores some or all of these coverages for a set period. Ask before the 60 days run out, not after the loss.

In Argus Investment v. West Bend Mutual Insurance, decided on July 28, 2026, the Illinois First District Appellate Court upheld an insurer's denial of a flood claim on a Chicago building that had housed a brewery (Insurance Business; opinion).

• The brewery closed in March 2020 and never reopened. Flooding damaged the property in January 2022.
• The owner claimed about $136,000 for the building and $161,000 for inventory and equipment, nearly $300,000 in all.
• This policy went further than the standard form: after more than 60 consecutive days of vacancy, the insurer would not pay for any loss at all.
• The owner argued the insurer knew the building was empty before renewal. The court disagreed, and noted the owner's chief executive had never read the policy.

The lessons for commercial real estate are direct. Read the vacancy wording in every policy, because it varies. Tell your insurer in writing when space goes dark. And do not assume that renewal means the insurer has accepted the vacancy.

A busy multi tenant tower with a few empty floors usually passes the 31 percent test for the building as a whole. That does not make the empty floors safe. The risk shows up in several ways:

• Single tenant buildings: when the only tenant leaves, the whole building can cross the line in 60 days.
• Low occupancy buildings: a building under 31 percent use, common in older stock during a slow lease up, may already be vacant under the form.
• Tenant suites: a tenant that has downsized or relocated but still holds a lease may have no water damage coverage for its own suite.
• Physical risk on empty floors: even when coverage holds, a leak on an empty floor runs longer and damages the occupied floors below, where the claims, rent abatement and tenant disputes land.
• Deductibles and renewals: repeat water losses from empty space raise premiums and deductibles for the whole building.

Our hub guide to water leak detection and water damage prevention for commercial buildings covers the sources of those leaks in detail.

Insurer guidance for vacant property is consistent. Zurich's vacant property checklist directs owners to consider at least daily or weekly interior and exterior inspections, frost protection wherever water stays on, maintained sprinklers and alarms, prompt repairs to broken windows and a record of every visit (Zurich). GuideOne's guidance calls for inspections at least weekly and heat of at least 40°F wherever there is a wet pipe sprinkler system (GuideOne).

• Inspection frequency: at least weekly inside and out, and more often in freezing weather.
• Heat: maintained wherever water or wet sprinkler piping remains, or systems fully drained where heat is off.
• Water: domestic water shut off to empty floors where it is not needed, with sprinklers left in service.
• Fire protection: sprinklers and fire alarm kept in service and tested on schedule.
• Security: doors and access control locked down, alarms working, broken glass repaired quickly.
• Notice: written notice to the insurer when space becomes vacant, and a vacancy permit where needed.
• Documentation: a dated record of every inspection, with what was found and what was done.

Freezing weather is where vacant space fails most often in Texas. Our frozen pipes checklist for office buildings covers the heat and sprinkler details.

On every visit

• Floors dry: no standing water, wet carpet or water trails, especially in restrooms, pantries and near risers.
• Ceilings: no new stains, sagging or missing tiles.
• Temperature read and logged; at least 40°F wherever water filled sprinkler piping remains, higher where your insurer asks.
• Restrooms and pantries: water off where planned, no running fixtures, traps not dried out.
• Sprinkler heads intact, not painted or damaged; floor control valve open and sealed.
• HVAC units and fan coils: drains clear, no condensation problems.
• Windows, doors and access points: closed, locked and undamaged; no signs of entry.
• No storage, debris or contractor materials left behind that add fire load or hide leaks.
• Exit routes and exit signs clear and working, so the floor stays safe for anyone who enters.

How to prove it happened

• Photograph the same points on every visit: a restroom, the pantry, the riser closet, the thermostat and a wide shot of the floor.
• Record the date, time, floor, temperature and inspector on each visit.
• Log every finding with the work order that fixed it and the date it closed.
• Keep the records with the policy and the vacancy notice, ready for the adjuster.

A signed sheet that says "checked" is better than nothing. A year of dated photos from the same spots is far better, and it is exactly what a claim or a coverage dispute turns on.

When is a commercial building considered vacant for insurance?

Under the standard ISO form, a building owner's building is vacant unless at least 31 percent of its total square footage is rented and used, or used by the owner, for customary operations.

What does the 60 day vacancy clause exclude?

After more than 60 consecutive days of vacancy, the standard form excludes vandalism, sprinkler leakage unless protected against freezing, building glass breakage, water damage, theft and attempted theft, and reduces other losses by 15 percent.

How often should a vacant commercial building be inspected?

Insurers generally expect at least weekly interior and exterior inspections, more often in freezing weather, with each visit recorded.

Can I keep coverage on a vacant building?

Often, yes. Notify your insurer in writing and ask about a vacancy permit endorsement or a vacant building policy before the 60 days run out.

Does a signed lease keep a space from being vacant?

Not under the standard form. The space has to be used for customary operations, not just leased.

FacilityOps AI (RoboSkill Inc.) is an autonomous inspection platform that turns vacant floor inspections into a schedule that never slips and a record that holds up. A FacilityOps inspection robot walks the route on the vacant floors where it is deployed, on a set schedule, day or night, including weekends and holidays when nobody else would go up.

• Water: looks for standing water, wet carpet, drips and ceiling stains, and uses thermal imaging to find cool, wet patches in ceilings and walls before they show.
• Temperature: records the temperature across the floor on every pass, which is the evidence that heat was maintained.
• Sprinklers: photographs heads and the floor control valve, flagging damage, paint or a closed valve.
• Security: checks doors and windows and flags signs of entry, damage or items that should not be there.
• Same points, every time: photographs the restroom, pantry, riser closet and thermostat from the same position on each visit.

Every visit is stamped with the time and location, and every finding becomes a work order with the fix confirmed on the next pass. The output is the dated proof of every visit that an insurer, an adjuster or a court looks for, built up automatically week after week.

FacilityOps sensor hubs placed in riser closets and restrooms on empty floors watch for water and temperature between passes and send the robot to look when a reading changes. Because the platform is hardware agnostic, a technician's own camera, a drone or another robot can feed the same record for floors outside the robot's route.

The robot runs fully autonomously, and technicians can take manual control at any time.

An empty floor, checked on schedule and photographed from the same points every visit, so the record is ready before anyone asks for it.

FacilityOps documents conditions on vacant floors. It does not change policy terms, replace notice to your insurer or a vacancy permit, or provide legal or insurance advice.

• Water Leak Detection and Water Damage Prevention for Commercial Buildings
• Frozen Pipes in Office Buildings: A Texas Hard Freeze Checklist
• Commercial Property Insurance in 2026: How Documented Maintenance Affects Your Rates
• How to Keep Inspection Evidence for Audits and Insurers