What Landautomate does with this page
This guide is the reading version of our Washington rule base. In the app, the same rules become dated tasks on each of your Washington properties, timed to your purchase date, lease dates, property age, and climate, with an email before each one is due. The free preview shows a sample of that schedule for Washington in under a minute, no account needed.
Preview the Washington schedule
Washington compliance obligations
Washington landlords commonly track 5 state and local compliance obligations, each listed below with its schedule, its sources, and the date we last verified it. Among them: if your rental is in Seattle, confirm its RRIO registration and renewal date, pay first-half property tax by April 30, and pay second-half property tax by October 31.
If your rental is in Seattle, confirm its RRIO registration and renewal date
If your rental is in Seattle, it must be registered under the city's Rental Registration and Inspection Ordinance (RRIO) before it is rented and renewed every two years by the expiration date on the certificate, with a new declaration that the units meet the RRIO checklist, so confirming the registration and noting that date avoids city penalties of $150 a day for the first 10 days and $500 a day after that.
On a recurring schedule · Last verified September 2026 · source 1 · source 2 · source 3
Pay first-half property tax by April 30
Washington first-half property taxes are due April 30 (the whole bill if it is under $50), and paying late starts interest on the full year's tax, at 9% a year for residential parcels of four or fewer units and 12% a year plus penalties for larger or nonresidential parcels.
Each year around April 30 · Last verified September 2026 · source 1 · source 2 · source 3
Pay second-half property tax by October 31
Washington second-half property taxes are due October 31, and a late payment adds interest on the unpaid half, at 9% a year for residential parcels of four or fewer units and 12% a year plus an 8% penalty on December 1 for larger or nonresidential parcels.
Each year around October 31 · Last verified September 2026 · source 1 · source 2 · source 3
Return security deposit with itemized statement within 30 days of move-out
Washington law (RCW 59.18.280) requires, within 30 days after the rental agreement ends and the tenant moves out, handing over or mailing first class to the tenant's last known address a full and specific statement of the basis for keeping any of the deposit, with copies of the estimates or invoices supporting each damage charge, and any refund due, and missing the deadline makes the landlord liable for the full deposit, while an intentional refusal can cost up to twice the deposit plus the costs and attorney fees of a lawsuit the tenant wins.
On a recurring schedule · Last verified September 2026 · source 1 · source 2
Verify smoke and CO alarms are operational, especially at turnover
Washington landlords must provide working smoke alarms and carbon monoxide alarms (with a CO alarm outside each sleeping area and on each level), and while tenants maintain them and replace batteries during a tenancy, the landlord must make sure the smoke alarms work before a new tenant moves in, so testing every alarm at each turnover and once a year meets that duty and catches a dead alarm before an emergency.
On a recurring schedule · Last verified September 2026 · source 1 · source 2 · source 3
Seasonal maintenance for Washington
Landlords in Washington plan upkeep around a temperate climate: this guide lists 8 seasonal maintenance items for Washington in calendar order, each with its timing and the date we last verified it. Among them: do a midwinter gutter and downspout check after storms, exterior paint and siding moisture check, and smoke and CO detector seasonal test.
Do a midwinter gutter and downspout check after storms
Northwest windstorms peak in December and western Washington's rainy season runs into April, so a mid-January check that clears the needles, twigs, and branches storms have knocked into gutters and downspouts keeps them draining through the rest of the wet months, especially where tall trees overhang the roof.
Each year around January 15 · Last verified September 2026 · source 1 · source 2 · source 3
Exterior paint and siding moisture check
Checking paint and siding after the wet season prevents rot and moisture intrusion in mild climates.
Around March · Verified before August 2026
Smoke and CO detector seasonal test
An annual full test of smoke and CO detectors (beyond battery swaps) confirms every alarm actually sounds.
Around March · Verified before August 2026
Check the roof for moss and treat it during a spring dry spell
Moss holds water against the roof and can lift shingles and shorten roof life, and in western Washington a spring dry spell, while the moss is still actively growing, is a good time to remove it and treat the roof before fall rains bring regrowth.
Each year around May 1 · Last verified September 2026 · source 1 · source 2 · source 3
Create defensible space and clear flammable debris before summer fire season
Clearing dry leaves, needles, and brush from the roof, gutters, and deck and from the first 30 feet around the house each May, before the summer fire season, removes fuel that embers can ignite, which matters most in central and eastern Washington but also west of the Cascades, and Washington DNR cites studies finding that up to 80 percent of homes lost to wildland fire might have been saved had the brush around them been cleared.
Each year around May 15 · Last verified September 2026 · source 1 · source 2 · source 3
HVAC seasonal service
A shoulder-season HVAC service keeps heating and cooling efficient before temperature swings.
Around May · Verified before August 2026
Clean gutters and inspect roof and downspouts before fall rains
Most of Washington's yearly precipitation falls from October to April, so clearing leaves and needles from gutters and downspouts in mid-September, making sure downspouts empty well away from the foundation, and checking the roof for moss and damaged shingles keeps the first fall storms from overflowing at the roof edge and soaking the ground against the house.
Each year around September 15 · Last verified September 2026 · source 1 · source 2 · source 3
Run an earthquake readiness check during ShakeOut month
Washington's Cascadia subduction zone and shallow crustal faults can produce damaging earthquakes, so an annual October check of water heater strapping, emergency supplies, and where and how to shut off the gas limits damage and keeps occupants safer.
Each year around October 1 · Last verified September 2026 · source 1 · source 2 · source 3
Baseline upkeep for every rental
Every rental needs the same baseline care regardless of state: this guide tracks 16 recurring upkeep items, each with its schedule and the date we last verified it. Among them: CPA tax document preparation, gutter inspection, and HVAC filter replacement.
CPA tax document preparation
Organized records make tax filing accurate and deductions defensible.
Within 365 days of the triggering event · Verified before August 2026
Gutter inspection
Clear gutters prevent water intrusion, foundation, and roof damage.
Within 90 days of the triggering event · Verified before August 2026
HVAC filter replacement
Clean filters protect HVAC equipment and keep energy costs down.
Within 90 days of the triggering event · Verified before August 2026
Insurance renewal review
Confirms coverage limits and premiums still match the property risk.
Within 365 days of the triggering event · Verified before August 2026
LLC annual filing prep
Keeps the ownership entity in good standing with state filings.
Within 365 days of the triggering event · Verified before August 2026
Lease renewal planning
Planning renewals ahead of time reduces vacancy and turnover costs.
Within 365 days of the triggering event · Verified before August 2026
Maintenance review
Keeps small maintenance issues from turning into expensive repairs.
Within 30 days of the triggering event · Verified before August 2026
Owner distribution check
Verifies owner cash distributions reconcile with rent and expenses.
Within 30 days of the triggering event · Verified before August 2026
Pest inspection
Early pest detection prevents structural damage and habitability complaints.
Within 90 days of the triggering event · Verified before August 2026
Property tax review
Reviewing assessments can surface appeal opportunities and budget changes.
Within 365 days of the triggering event · Verified before August 2026
Rent collection review
Confirms rent was received on time and surfaces collection issues early.
Within 30 days of the triggering event · Verified before August 2026
Rent increase review
Keeps rent aligned with market rates and local rent regulations.
Within 365 days of the triggering event · Verified before August 2026
Smoke detector battery check
Working smoke and CO detectors are a life-safety and legal requirement.
Within 90 days of the triggering event · Verified before August 2026
Utilities minimal-service verification
Confirms vacant-property utilities stay at minimal service so pipes, alarms, and sump pumps keep working.
Within 14 days of the triggering event · Verified before August 2026
Utility reconciliation
Catches billing errors and unexpected usage spikes on property utilities.
Within 30 days of the triggering event · Verified before August 2026
Vacant property security check
Regular walkthroughs of a vacant property deter break-ins, squatting, and unnoticed damage.
Within 30 days of the triggering event · Verified before August 2026
Common questions
What are the compliance requirements for Washington landlords?
Our reviewed rule base currently lists 5 state and local compliance obligations that Washington landlords commonly track. Among them: if your rental is in Seattle, confirm its RRIO registration and renewal date, pay first-half property tax by April 30, and pay second-half property tax by October 31. Each obligation shows its schedule, the sources it was checked against, and the date we last verified it. This guide is general information for planning reminders, not legal advice.
What seasonal maintenance should Washington landlords plan for?
The Washington guide lists 8 seasonal maintenance items timed to a temperate climate, in calendar order. Among them: do a midwinter gutter and downspout check after storms, exterior paint and siding moisture check, and smoke and CO detector seasonal test. Landautomate turns each item into a dated reminder on your property calendar so the work is planned before the season arrives.
What routine upkeep should every Washington rental get?
Alongside state specific work, the Washington guide tracks 16 baseline upkeep items that apply to nearly every rental. Among them: CPA tax document preparation, gutter inspection, and HVAC filter replacement. These recur on a regular schedule, and Landautomate schedules each one automatically for every property you add.
How does Landautomate verify Washington landlord rules?
Every rule in the Washington guide goes through human review before it is published, and each rule shows the date we last verified it. Each compliance obligation links the primary sources it was checked against. Laws and deadlines change, so if you believe something here is outdated or incorrect, contact us at support@landautomate.com and we will review it promptly.