Annual Rental Property Maintenance Checklist for Washington Landlords

By Gary E. Wilson, President & Designated Broker, Wilson Management, Inc.

Owning a rental in the Greater Seattle area is a smart long-term investment, but the Pacific Northwest climate is hard on buildings. Wet winters, heavy moss growth, and months of rain mean that small problems—a clogged downspout, a worn furnace filter, a hairline gap in the weatherstripping—can turn into expensive repairs if they go unwatched. The single best way to protect your property's value and keep good tenants in place is a consistent, season-by-season rental property maintenance checklist.

Preventive maintenance does two things at once. It catches issues while they're cheap to fix, and it signals to residents that you take care of the home, which directly supports tenant retention and on-time rent. A reliable landlord maintenance schedule also helps you meet your general habitability obligations under Washington law—keeping the home safe, weathertight, and functional throughout the year. (If you're newer to renting out a property, start with our first-time landlord guide for the legal and habitability basics, then come back to this checklist.)

Below is a practical, evergreen checklist organized by season, with the Pacific Northwest realities in mind. Use it as a working template and adjust for your specific property.

Spring

Spring is for recovering from winter and getting ahead of the dry season.

• Inspect the roof for missing, cracked, or lifted shingles after winter storms
• Check the attic and ceilings for water stains or signs of leaks
• Clean gutters and downspouts of accumulated debris and pine needles
• Treat and remove moss from the roof and shaded exterior surfaces
• Test and service the air conditioning or heat pump before warm weather
• Inspect exterior caulking and re-seal around windows and doors
• Examine decks, porches, railings, and stairs for rot or loose fasteners
• Check the foundation and exterior walls for cracks or settling
• Service the lawn equipment and refresh landscaping/mulch
• Inspect the irrigation or sprinkler system for winter damage

Summer

The drier months are the ideal window for bigger exterior projects and prep work for the rain to come.

• Schedule exterior painting, staining, or siding repairs while it's dry
• Power-wash siding, walkways, and driveways
• Inspect and re-seal the driveway and walkway cracks
• Trim trees and shrubs away from the roof, siding, and power lines
• Check window and door screens; repair or replace as needed
• Test exterior faucets, hose bibs, and outdoor outlets
• Inspect the water heater for leaks, sediment, or corrosion
• Service ventilation fans in bathrooms and the kitchen (critical in a humid climate)
• Inspect the deck or fence and reapply sealant or stain if needed
• Review the property's exterior drainage and grading before fall

Fall

This is the most important season for a Pacific Northwest landlord. Everything you do now prevents water damage during months of rain.

• Clean gutters and downspouts again—thoroughly—before the rainy season starts
• Verify downspouts direct water well away from the foundation
• Clear and inspect exterior drains, French drains, and catch basins
• Test the sump pump and its backup; clear the pit and check the discharge line
• Service the furnace or heating system and replace filters before heavy use
• Check weatherstripping and door sweeps; seal drafts and gaps
• Inspect and clean the chimney and fireplace if applicable
• Insulate or wrap exposed pipes in crawl spaces and unheated areas
• Disconnect, drain, and store garden hoses; shut off exterior water lines
• Re-check the roof and remove debris and moss before winter

Winter

Winter maintenance is mostly about monitoring, fast response, and protecting against cold snaps.

• Monitor for ice dams, roof leaks, and interior condensation or mold
• Keep the heating system running enough to prevent frozen pipes during cold spells
• Inspect attic and crawl-space insulation and ventilation
• Check the basement and crawl space for moisture or pooling water after storms
• Confirm the sump pump is keeping up during heavy rain events
• Keep walkways, steps, and entries clear and safe
• Respond promptly to tenant-reported leaks, drafts, or heating issues
• Review the previous year's repairs and plan the spring punch list

Year-Round / As-Needed

Some tasks don't follow the seasons—they're tied to safety, compliance, and ongoing upkeep.

• Test smoke and carbon monoxide (CO) detectors and replace batteries (see our first-time landlord guide for detector requirements)
• Replace HVAC filters on a regular schedule (typically every 1–3 months)
• Conduct routine interior and exterior inspections, with proper notice to tenants
• Address pest control proactively, especially rodents in fall and winter
• Keep documentation and photos of every inspection and repair
• Test GFCI outlets in kitchens, bathrooms, and exterior areas
• Check for and address any plumbing leaks or running toilets
• Maintain a vetted list of licensed, insured contractors and emergency vendors
• Confirm the home meets general habitability standards: safe heat, water, and weatherproofing

Move-Out / Turnover

Turnover is the natural time for a deeper reset between tenants.

• Complete a detailed move-out inspection and compare against the move-in condition report
• Document the property's condition with thorough dated photos
• Deep-clean the unit, carpets, and appliances
• Repaint and patch walls as needed
• Re-key or change the locks for the new resident
• Replace worn caulk in kitchens and bathrooms
• Test every appliance, outlet, faucet, and fixture
• Replace HVAC filters and smoke/CO detector batteries
• Service and clean gutters before re-listing during the wet season
• Complete any deferred repairs while the unit is vacant and accessible

How Wilson Management handles maintenance

Keeping up with a year-round landlord maintenance schedule takes time, local know-how, and a reliable network of contractors—exactly what's hard to manage from a distance or on top of a full-time job. Wilson Management, Inc. has been serving owners across Bellevue and the Greater Seattle area since 1982, and maintenance is a core part of what we do for our clients.

We coordinate routine seasonal upkeep, handle tenant repair requests, dispatch vetted and licensed vendors, and keep your property weather-ready through the Pacific Northwest's demanding winters. Owners get the upside of a well-maintained rental—stronger value and better retention—without managing the day-to-day themselves. Learn more about our property maintenance services and our full range of property management services.

Frequently Asked Questions

Ready to take maintenance off your plate?

A consistent rental property maintenance checklist protects your investment—but you don't have to run it alone. Whether you want full-service management or simply reliable maintenance coordination, Wilson Management, Inc. has supported Greater Seattle owners since 1982.

Call us at (425) 453-0089, request a free rental analysis to see what your property can earn, or contact us to talk through your maintenance needs today.