Building – New Buildingmultifamily_new
$42,100,000
1200 Westlake Ave N, Seattle, WA
flag:roof_estimatedpluto:joined
MAPPED · refreshed 8h agoLast 10 days of permits fully visible publicly · daily refresh · Parcel-joined ~89% · 18 IBC cohorts · 12 DQ flags per row
Seattle building permits
Permits indexed
740,200
All 740,200 Seattle permits indexed — daily refresh, parcel-joined ~89%. Last 10 days fully visible publicly; older history via free signup or API. 18 IBC cohort tags. 12 field-level data-quality flags per row.
refreshed 8h ago · daily refresh active
740,200 permits in Seattle. Search filters across address, contractor, cohort, and permit type.v1 — filters in-memory across recent permits; full DuckDB-WASM 30-day slice ships next.
Seattle insights
Derived nightly from the silver dataset · last updated 2026-05-24 02:00 PTMultifamily new construction activity in Seattle is up this month vs last
+14%
Top cohorts this quarter
multifamily_new · commercial_tenant_improvement · commercial_roofing
Most active neighborhood this week
South Lake Union
Solar residential vs last quarter
+19%
Recent commercial permits
Building – New Buildingcommercial_new
$88,200,000
800 5th Ave, Seattle, WA
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_roofing
$1,840,000
1818 N 45th St, Seattle, WA
flag:roof_estimatedpluto:joined
Mechanical – Equipmentcommercial_hvac
$980,000
401 Broadway E, Seattle, WA
flag:roof_estimatedpluto:joined
Electrical – Solar PVsolar_residential
$32,400
8410 35th Ave NE, Seattle, WA
flag:roof_estimatedpluto:joined
Building – New Buildingmultifamily_new
$18,900,000
2424 NW Market St, Seattle, WA
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_tenant_improvement
$840,000
1110 3rd Ave, Seattle, WA
flag:roof_missingpluto:joined
Building – Alterationcommercial_roofing
$0
2200 1st Ave S, Seattle, WA
flag:val_zeroflag:roof_estimatedpluto:joined
Mechanical – Equipmentcommercial_hvac
$1,840,000
500 Yale Ave N, Seattle, WA
flag:roof_estimatedpluto:joined
Building – Alterationmultifamily_alteration
$1,820,000
1414 E Pike St, Seattle, WA
flag:roof_missingpluto:joined
Electrical – Solar PVsolar_residential
$38,400
6800 Mary Ave NW, Seattle, WA
flag:roof_estimatedpluto:joined
Building – Alterationcommercial_renovation
$2,400,000
1428 W Lake Union Ave, Seattle, WA
flag:roof_missingpluto:joined
Why this page exists
Seattle on PermitCore: daily-refreshed, IBC-cohort-tagged, DQ-flagged.
Parcel-joined geometry across Seattle.
Every commercial permit joined to its lot polygon where source data permits. Join rate Parcel-joined ~89%. Unjoined rows are flagged with addr_unmatched, not silently dropped.
Daily refresh from the metro's open-data portals.
Refreshed every 24h from Seattle's public permit datasets. Competitors typically update on the 1st and 15th with multi-week processing lag. PermitCore ingests, cohort-classifies, and DQ-flags by 02:00 local.
Field-level DQ flags on every row.
12 data-quality flags per row. Cell-level transparency on valuation, roof area, IBC class, parcel join, dedup, date sanity. Filter or weight by flag in API queries.
Top Seattle contractors
Ranked by permit count, trailing 90 days · Each links to the contractor pageEmerald City Buildersmultifamily_new · South Lake Union · Ballard · Capitol Hill · Downtown124Pacific Northwest Roofingcommercial_roofing · Wallingford · SODO142Rainier Mechanical Inccommercial_hvac · Capitol Hill · South Lake Union118Cascade Solar Cosolar_residential · Wedgwood · Crown Hill · Ballard96Sound Interior Buildcommercial_tenant_improvement · Downtown · Westlake138
Seattle by cohort
Refreshed hourly via /v1/jurisdictions/seattle/cohorts/distribution · Each links to the cohort pageCommercial Alterationcommercial_alteration41,267Commercial New Constructioncommercial_new3,371Multifamily New Constructionmultifamily_new2,802Commercial Demolitioncommercial_demolition2,577Residential Demolitionresidential_demolition404Industrial New Constructionindustrial_new254Multifamily Alterationmultifamily_alteration127ADU-Qualifying Constructionadu_qualifying—Civic Constructioncivic—Commercial MEPcommercial_mep—Commercial Pool Constructioncommercial_pool—Commercial Shell-Only Constructioncommercial_shell_only—Commercial Signage Permitscommercial_signage—Residential Alterationresidential_alteration—Residential Foundation-Onlyresidential_foundation_only—Residential MEPresidential_mep—Residential New (Single-Family)residential_new_sf—Temporary Construction Supporttemporary_construction_support—
Programmatic access
Get the Seattle permit feed in your stack.
Self-serve API tiers. No sales calls. Pay with a card. MCP server ships day-1 for AI agents. npm install @permitcore/mcp and you're running.
Anonymous — last 10 days of permits visible on every page; no signup neededFree — signup unlocks 1,000 req/day · 6 cohorts · MCP server · 5K row exports/monthHobby · $49/mo — 10K req/mo · all 18 cohorts · webhooks · 1-year historyBuilder · $149/mo — 100K req/mo · full history · 5 webhooks · 48h support SLA
Custom delivery
Want Seattle permit data delivered to your CRM or warehouse?
Self-serve API tiers cover most use cases. If you need direct delivery to Salesforce, HubSpot, Snowflake, BigQuery, or a custom warehouse — tell us the shape and we'll scope a path. Replies within one business day.