Madison Park property taxes track Seattle’s 0.99 percent effective rate, but the King County mass-appraisal model misfires on Madison Park homes in distinctive ways. Here is how to spot it.
Madison Park is one of Seattle's premium lakefront neighborhoods: leafy streets, Lake Washington beach access, and a tight commercial node at Madison and 43rd. The 2026 King County Assessor median assessed value across Seattle is $833,000 at an effective rate near 0.99 percent, producing a citywide median bill around $8,000 — but the bill that lands on a Madison Park home depends on the model’s neighborhood-level math, which is where the gaps appear.
How are Madison Park property taxes calculated?
King County reassesses every Seattle property every year, including every parcel in Madison Park. The Assessor’s mass-appraisal model weights square footage, year built, lot size, and recent neighborhood sales, then applies the combined Seattle levy rate (around 0.99 percent for 2026) to the result. Voter-approved levies for schools, transit, parks, and city services layer on top of the state and county base.
What the model rarely picks up are the property-specific and Madison Park-specific factors that buyers actually price into offers — and that is where most appeals are won. Anchored by Madison Street, the Madison Park beach, and 43rd Avenue East, Madison Park’s housing stock has its own quirks the citywide model does not always capture.
Where does the Assessor get Madison Park wrong?
Madison Park's overassessment pattern mirrors Laurelhurst: thin sales data on premium parcels and large land-share values. The mass-appraisal model handles low-volume, high-value neighborhoods unevenly — sometimes overshooting on land share of your assessed value, sometimes undershooting view ratings.
Equity comps within Madison Park itself usually carry more weight than sales comps. The neighborhood is small enough that there are typically only a handful of true comparable sales per year, and the BOE accepts equity-comp arguments when sales data is sparse.
Madison Park comps best to Madrona (south) and Broadmoor (immediately west). Laurelhurst is a tertiary set. A tight comp set drawn from genuinely similar homes — same submarket, similar size and age, similar condition — is what moves a Madison Park appeal at the King County Board of Equalization.
What does a Madison Park appeal actually look like?
Madison Park homeowners appeal through the King County Board of Equalization, the same independent panel that hears every Seattle and King County appeal. The 2026 filing window runs through July 1, or 60 days after your Official Property Value Notice mails, whichever is later. The hearing is short, usually 15 to 30 minutes by phone, and the Board wants concrete evidence: comparable sales, documented condition issues, or an outright error in the property record.
For the broader Seattle context, see the Seattle property taxes guide or the 2026 King County property tax appeal guide.
Is a Madison Park appeal worth filing?
At Seattle’s 0.99 percent effective rate, every $10,000 of assessed-value reduction is roughly $100 off the annual bill. A 10 percent reduction on a typical Madison Park home (recent sale prices around $2,200,000, assessed values somewhat lower) pulls roughly $2,000 a year off the bill, and reductions tied to documented evidence often land larger. Most Madison Park homes have at least one angle worth pursuing — the question is which one.
FairAppeal handles the full process from review through hearing, and only charges a percentage of first-year tax savings if the appeal actually reduces your taxes. Enter your address on the homepage for a free review — the 2026 window is still open.