There is no single Bellevue property-tax rate that applies to every home. Your annual bill is calculated per parcel: King County multiplies that specific parcel's assessed value by the levy rate tied to its levy code, then adds any voter-approved special levies. Two houses across the street from each other can have different bills because they sit in different levy codes or carry different assessed values. This guide explains exactly how the calculation works, walks through the King County parcel lookup step by step, and gives illustrative worked examples so you can build your own numbers before you buy or sell.
Key takeaways
- Bellevue has no flat, citywide property-tax rate — the bill is parcel-specific: assessed value × levy rate for that parcel's levy code, plus voter-approved levies.
- Buying a home does not reset the tax basis to your purchase price. King County reassesses annually based on market value, independent of any single sale.
- Look up your own parcel's assessed value, levy code, and current tax in the King County Parcel Viewer / eReal Property before relying on any general estimate.
- New construction typically has a partial first-year bill (land only, or land + partial improvement) that jumps once the completed structure is fully assessed.
- REET (real estate excise tax) is a one-time seller-paid closing cost; property tax is an ongoing annual bill; they are unrelated line items.
- FIRPTA is a federal withholding requirement that applies when the seller is a foreign person — it is not a buyer tax and not a Washington state tax.
- Washington State capital gains tax does not apply to real estate sales.
How King County actually calculates your bill
Every parcel in King County sits inside a specific "levy code" — a geographic taxing district defined by the overlapping cities, school districts, fire districts, ports, and other taxing authorities that serve that address. Each levy code has its own combined levy rate, expressed per $1,000 of assessed value. Your annual property tax bill is:
Assessed Value ÷ 1,000 × Levy Rate (for your parcel's levy code) = Base Tax, plus any voter-approved excess levies (school bonds, transportation measures, park district levies, etc.) that apply to that same levy code.
The Assessor's Office values property annually, and the Treasury bills and collects the tax the following year (Washington operates on a one-year assessment-to-collection lag). Because levy codes and levy rates can differ block to block, and because voter-approved levies change from year to year, two nearby homes with similar assessed values can still owe noticeably different amounts.
Step-by-step: look up your own parcel
- Find your parcel number. Search your address in the King County Parcel Viewer (gis.kingcounty.gov) or the Assessor's eReal Property search to retrieve the 10-digit parcel number (PIN).
- Open eReal Property / Parcel Viewer. Enter the parcel number in King County's eReal Property tool (info.kingcounty.gov/assessor/eRealProperty) to pull the official record for that specific parcel.
- Read the assessed value and levy code. The record shows the current assessed land and improvement value, the total assessed value, the assessment (valuation) year, and the levy code assigned to that parcel.
- Read the current year's tax. The King County Treasury property tax lookup (kingcounty.gov/depts/finance-business-operations/treasury/property-tax) shows the actual billed amount, payment history, and due dates for that parcel.
- Note the assessment year. Assessed value and levy rate can change annually — always confirm which valuation year the figures on your screen apply to, especially if you are comparing a listing sheet to a live county record.
Does buying reset the tax basis? No.
A common misconception: "I paid more than the assessed value, so my tax bill will jump to match my purchase price immediately." That is not how Washington property tax works. King County revalues parcels annually based on mass-appraisal market analysis, not on individual sale prices. A purchase at a premium above the prior assessed value will typically be reflected — gradually or in the next full reassessment cycle — as the Assessor's office updates its market data, but there is no automatic, instant reset triggered by a single closing. Budget based on the parcel's assessment trend, not on your contract price.
Illustrative worked examples (not real parcel records)
Important: The three examples below are illustrative assumptions built to show how the math works — they are not an actual parcel record. Before making any financial decision, look up the real assessed value, levy code, levy rate, and current tax bill for the specific parcel using the King County Parcel Viewer / eReal Property tool linked above.
| Property type | Illustrative assessed value / assessment year | Illustrative levy code / rate | Illustrative annual tax | Holding-cost assumptions (separate) |
|---|---|---|---|---|
| Condo (established, 2BR) | $650,000 / 2026 assessment | Levy code A / ~$8.90 per $1,000 (illustrative) | ~$5,785 (illustrative) | HOA $550/mo; insurance (HO-6) ~$45/mo; utilities ~$120/mo — all illustrative, verify with your own quotes |
| Established single-family home | $1,450,000 / 2026 assessment | Levy code B / ~$8.60 per $1,000 (illustrative) | ~$12,470 (illustrative) | Insurance ~$180/mo; maintenance reserve ~$300/mo; utilities ~$250/mo — illustrative only |
| Newly built single-family home | $1,900,000 / 2026 assessment (partial-year, land + partial improvement) | Levy code B / ~$8.60 per $1,000 (illustrative) | Year 1 (partial): ~$9,800; Stabilized year: ~$16,340 (illustrative) | Warranty period may lower Year-1 maintenance; insurance and utilities typically ramp to full-size home levels — illustrative only |
New construction: the partial first-year bill vs. the stabilized year
When a home is newly built, the first tax bill often reflects only the land value, or the land plus a partial improvement value, because the county's assessment date can fall before construction is fully complete. This produces an artificially low "Year 1" bill that surprises new owners when the second or third bill — once the completed structure is fully on the assessment roll — jumps to the stabilized, full-value level. Always ask your agent or the county record whether a new-construction parcel's current bill reflects a completed assessment or a partial one before you use it to budget forward.
How to read your assessment notice and tax bill
The annual "Notice of Value" mailed by the Assessor shows your land value, improvement value, total assessed value, and the assessment (valuation) date — this is not a bill. The separate tax bill or statement from the King County Treasury shows the actual amount due, the levy code applied, the breakdown of taxing districts contributing to the total rate, payment due dates (typically split into two installments), and any special assessments or delinquency notices. Compare the two documents' assessment year to make sure you're reading matching figures.
Filing an assessment appeal (Board of Equalization)
If you believe your assessed value is too high relative to comparable market sales, you can file an appeal with the King County Board of Equalization. The filing deadline is set annually by the county and can shift from year to year, so confirm the current-year deadline directly on the King County Board of Equalization page before you rely on any date you've seen elsewhere. Appeals generally require comparable sales evidence and must be filed within the window after your Notice of Value is mailed.
Full holding-cost table (separate from property tax)
| Cost category | Typical monthly range (illustrative) | Notes |
|---|---|---|
| Property tax | Varies by parcel — see worked examples above | Based on assessed value × levy rate for that parcel's levy code |
| Homeowners insurance | $100–$300+ | Varies by dwelling coverage, deductible, and insurer; condos use HO-6 policies |
| HOA dues | $0 (many single-family) to $800+ (condos/PUDs) | Confirm current dues and any special assessments with the HOA |
| Maintenance reserve | 1%–2% of home value annually, budgeted monthly | Higher for older homes; lower for new construction under warranty |
| Utilities | $150–$400+ | Varies with home size, heating type, and usage |
These figures are general planning assumptions, not quotes. Get actual insurance and HOA figures for the specific property before closing.
Do not confuse these: REET and FIRPTA
Two closing-related items are frequently confused with ongoing property tax:
- REET (Real Estate Excise Tax): a one-time excise tax paid by the seller at closing, calculated on the sale price, and unrelated to the buyer's future annual property tax bill.
- FIRPTA: a federal withholding requirement that applies when the seller is a foreign person, requiring the buyer/closing agent to withhold a portion of proceeds for the IRS. It is not a tax owed by the buyer and has nothing to do with Washington property tax or capital gains.
Also note: Washington State does not apply its capital gains tax to real estate sales, and there is no statewide capital gains exposure tied to a home sale.
Get a parcel-specific tax and holding-cost sheet
General guides are useful for understanding the mechanics, but only a lookup on the actual parcel gives you real numbers. Submit an address and our team will pull the King County parcel record and put together a tax and holding-cost sheet specific to that property.
Data sources & methodology
Market figures referenced in related articles are sourced from NWMLS closed sales via the Willfen feed, all residential property types, period ending 1 August 2026. Property tax and parcel information should always be verified directly at:
- King County Assessor
- King County Parcel Viewer
- King County eReal Property
- Washington Department of Revenue — Property Tax
- IRS — FIRPTA Withholding
This article provides general information only and is not tax or legal advice. Consult a CPA or attorney for guidance specific to your situation.
Related reading: King County property tax by city, Bellevue real estate market 2026, closing costs in Washington, and cost to sell a house in Seattle.
Contact Maggie Sun Real Estate Group for a parcel-specific tax and holding-cost review.
By Maggie Sun, Managing Broker, Maggie Sun Real Estate Group
