Blackwood Builders Group LLC
Attached & Detached (DADU) builder · Seattle, King County
WA L&I registration: expired (as of May 2026)21 ADUs permitted
in Seattle / King County · verified from public permit records
Verified permits
21
Permitting since
2020
Service area
King County
ADU types
AttachedDetached (DADU)
Verified permit record
21 ADU building permits on public record in King County, 2020–2025 — 17 detached, 13 attached. Drawn from City of Seattle permit data and matched to Blackwood Builders Group LLC's Washington contractor registration. Project addresses are not published.
Project photos
Project photos appear once Blackwood Builders Group LLC claims this listing.
About
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Permit record: City of Seattle SDCI permit data.
License status: WA L&I (data.wa.gov).