Winterizing a Vacant Rental Property in Fairfax County: A Landlord's Checklist

A vacant Fairfax County property in winter is a liability waiting to happen. Without a tenant to report problems or keep heat running, frozen pipes, HVAC failures, and roof damage can cause thousands of dollars in damage before anyone notices. Here's the checklist for every winter vacancy.

Plumbing and Water Systems

• Set the thermostat at minimum 55°F — maintain heat even during vacancy
• Insulate exposed pipes in unconditioned spaces (garage, crawl space, attic)
• Disconnect and drain exterior hose bibs — leave the shut-off valves closed and slightly open to drain
• Know where the main water shut-off is located and confirm it operates correctly
• For extended vacancy (2+ weeks): consider draining supply lines and adding antifreeze to traps
• Leave cabinet doors under sinks open during deep-freeze weather to allow heat to reach pipes in exterior walls

HVAC and Heating

• Service the HVAC system before winter if it hasn't been serviced recently
• Replace air filter
• Test the thermostat and confirm it's maintaining temperature accurately
• For heat pumps: confirm the defrost cycle is functioning (heat pumps lose efficiency and can ice up below 35°F without a working defrost cycle)
• Keep emergency HVAC vendor contact information accessible

Exterior Protection

• Clean gutters before first frost — clogged gutters create ice dams that cause interior water damage
• Inspect roof for any loose or missing shingles — repair before ice and snow load
• Trim tree branches that overhang the roof — ice load can cause them to fall
• Ensure exterior doors seal properly — drafts can lower interior temperatures significantly
• Confirm garage door seals at the bottom — an unsealed garage can allow cold to penetrate attached living spaces

Security and Monitoring During Vacancy

• Maintain exterior lighting (timer-controlled) — visible occupancy signs deter vandalism
• Consider a smart thermostat that alerts you if interior temperature drops below a threshold
• Arrange for regular check-ins — a neighbor, your property manager, or a vacant property monitoring service
• Pause mail or forward it — a full mailbox signals vacancy
• Notify your insurance carrier of the vacancy if it will extend beyond 30–60 days (standard policies may require notification)

Insurance Considerations for Vacant Properties

Standard landlord policies typically reduce coverage or exclude certain perils after 30–60 days of vacancy. Contact your insurance carrier when a vacancy begins and ask about vacant property endorsements or rider policies that maintain full coverage. The additional premium is almost always worth it — a single pipe burst in a vacant property without coverage can cost more than years of insurance payments.

At Flat Fee Landlord, we manage the transition between tenants including vacancy period monitoring and winterization coordination. Get your free rental analysis.