One chat for your Western Washington real estate business
SENTINEL is a chat-driven operating layer for agents focused on King, Pierce, Snohomish, and Whatcom counties. Ask it to retrieve supported property records, explain source-dated market context, compute WA seller math, work from entered contract terms, draft client-ready work, and organize the next supported action.
Market shift brief
Compare the latest two supported Redfin reporting periods for a selected market - free, measured, and shareable.
Open →
WA REET calculator
Graduated state excise tax + local county rate, computed to the dollar — 2026 brackets.
Open →
How property priority works
The deterministic 4-factor research ranking, published in full — no hidden probability claim.
Open →
Browse by county
King County
18 cities · 56 neighborhoods
Auburn · Bellevue · Bothell · Burien · Federal Way …
Explore King →
Pierce County
9 cities · 16 neighborhoods
Bonney Lake · Dupont · Gig Harbor · Lakewood · Puyallup …
Explore Pierce →
Snohomish County
11 cities · 13 neighborhoods
Bothell · Edmonds · Everett · Lake Stevens · Lynnwood …
Explore Snohomish →
Whatcom County
Chat-supported · public pages expanding
Bellingham · Ferndale · Lynden · Blaine · Birch Bay · rural Whatcom
Explore Whatcom →
Market figures are aggregated from Redfin Data Center (republished with attribution) and public county assessor records — never NWMLS listing data. Verify legal, tax, and contract specifics with your broker or a WA-licensed professional.