- Assessor site
- https://www.plattecountywyoming.com/departments/Assessor ↗
- Search by
- address; parcel/account number; owner name
- Reassessment cycle
- LEVEL OF ASSESSMENT state: assessed value = fair market value x the legislature-set level — 9.5% residential/commercial/ag, 11.5% industrial, 100% producing minerals (gross production in lieu). Annual valuation (Jan 1) by elected county assessors on the state-mandated RealWare CAMA; physical inspection at least every 6 years; Notice of Value mailed in spring. Utilities/pipelines/railroads are state-assessed by the DOR.
- Reassessment trigger
- Annual mass-appraisal update. The 2024 constitutional amendment split residential into its OWN fourth tax class (owner-occupied subclass authorized) — the foundation for residential-only relief that leaves commercial and industrial at their ratios.
- Personal & intangible property
- Business equipment taxable at the 9.5% level; annual listing with the county assessor.
- CRE forecasting note
- Commercial at 9.5% vs industrial at 11.5% — the CLASSIFICATION line between them is a fight worth having (and the industrial ratio has drawn legislative drafts). The 2024-25 reform wave is residential-heavy (4% cap, senior/long-term and owner-occupied exemptions, a certified 2026 ballot initiative for a 50% homeowner cut) — watch burden migration toward commercial/industrial. Mineral counties (Campbell, Sweetwater, Sublette, Converse) run low but commodity-volatile mills on 100%-ratio production value. Appeals: 30 DAYS from the Notice of Value to the County Board of Equalization, then State Board; relief applications due the 4th Monday in May.
- Residential note
- Stacked relief, most requiring APPLICATION by the 4th Monday in May: 4% annual increase cap (2024); 50% long-term homeowner exemption (65+, 25+ years of WY property-tax payments) — reworked for 2026 by HB 45: keyed to fair market value, capped at the first $3M, application by March 1, no sunset; the homeowner exemption (2025 SF 69, W.S. 39-11-105(a)(xlvi)): 25% of the fair market value of a single-family residential structure and its associated improved land, applied to the first $1,000,000 of value — first effective tax year 2025, no sunset in the act; from tax year 2026 the claimant must actually reside there at least 8 months of the year (armed-forces domicile exception), and it cannot be combined with the long-term-homeowner exemption on the same property in the same year; veteran exemption doubled to $6,000; refund program up to 145% of median income. (Wyoming's $20k 'homestead exemption' is a creditor-claims shield, W.S. 1-20-101 — not a property-tax exemption.) A statewide initiative seeking a 50% homeowner cut is certified for the November 2026 ballot — watch the result before relying on current rates.
SPLIT RATE — 9.5% vs 11.5% industrial vs 100% minerals — classification fights matter.
REFORM IN FLIGHT — Residential-relief wave + 2026 ballot initiative shifting burden.
FILING REQUIRED RELIEF — Exemption stack keyed to 4th-Monday-in-May applications.
CENTRAL ASSESSMENT CARVEOUT — Pipelines/railroads/utilities state-assessed.
APPEAL DEADLINE — 30-day Notice of Value clock.
Note: Wheatland/Guernsey.
Primary sources: WY DOR Property Tax Division (official roster + division pages); Teton/Carbon/Sublette/Albany official county pages; 2024 constitutional amendment + 2026 initiative records (as of 2026-07-04). Confirm current rules and figures with the assessing authority before any use.