Tacoma building & ADU permits
Recent permit activity, updated continuously.
Tacoma sits on Puget Sound south of Seattle and falls under Washington's HB 1337 ADU rules and HB 1110 middle-housing law, which scale density requirements by city size. Igni pulls Tacoma permits from the city's ArcGIS open data, released as public records under the Washington Public Records Act.
Igni is tracking 2,002 residential and building permits in Tacoma, WA — including 38 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 98404. The most recent filing Igni tracked was Sep 16, 2026. All records come from City of Tacoma ArcGIS open data (Esri), an official government open-data feed, and are refreshed continuously.
2002
Permits tracked
38
ADU permits
12
Distinct ZIP codes
Sep 16, 2026
Newest permit
Recent permits
A sample of the freshest permits in this jurisdiction — ZIP and city only (no street addresses).
| ZIP | Permit type | ADU type | Valuation | Applied |
|---|---|---|---|---|
| 98418 | Residential | — | $0 | Sep 16, 2026 |
| 98406 | Residential | — | $9,000 | Sep 16, 2026 |
| 98404 | Residential | — | $6,200 | Sep 16, 2026 |
| 98405 | Residential | — | $4,631 | Sep 16, 2026 |
| 98403 | Residential | — | $9,700 | Sep 16, 2026 |
| 98422 | Residential | — | $185,000 | Sep 16, 2026 |
| 98422 | Residential | — | $0 | Sep 16, 2026 |
| 98406 | Residential | — | $120,000 | Sep 16, 2026 |
| 98404 | Residential | — | $6,200 | Sep 16, 2026 |
| 98406 | Residential | — | $18,000 | Sep 16, 2026 |
| 98407 | Residential | — | $4,500 | Sep 16, 2026 |
| 98403 | Residential | — | $15,562 | Sep 16, 2026 |
| 98403 | Residential | — | $8,640 | Sep 16, 2026 |
| 98405 | Residential | — | $7,800 | Sep 16, 2026 |
| 98405 | Residential | — | $3,449 | Sep 16, 2026 |
| 98404 | Residential | — | $6,200 | Sep 16, 2026 |
| 98404 | Residential | — | $6,200 | Sep 16, 2026 |
| 98407 | Residential | — | $15,967 | Sep 16, 2026 |
| 98404 | Residential | — | $6,200 | Sep 16, 2026 |
| 98422 | Residential | — | $7,800 | Sep 16, 2026 |
Top ZIP codes by recent activity
ADU types in the recent set
Housing law — Washington
Washington's HB 1337 (2023) requires cities to allow at least two ADUs per lot in urban growth areas, bans owner-occupancy requirements, and limits parking and impact fees.
HB 1110 (2023) ends single-family-only zoning in larger cities, requiring duplex-to-sixplex middle housing scaled by city size, with Puget Sound cities phasing in compliance from 2025.
Tacoma ADU rules
Tacoma allows up to two accessory dwelling units on a residential lot — an interior or attached ADU within the primary home, or a detached ADU (DADU) in the rear yard — regardless of lot size, a change that took effect February 1, 2025. There is no owner-occupancy requirement, so an owner may rent both the main house and the ADU.
Detached units are generally limited to about 1,000 square feet of living area, and no off-street parking is required for an ADU; any parking that is provided must be reached from the rear and cannot displace the primary home's required spaces. Typical detached-ADU siting allows a modest side setback and no setback from an alley, though exact figures are set by the zoning code. ADUs are handled through the building-permit process rather than a discretionary land-use hearing.
These rules come from 'Home in Tacoma' Phase 2 — the city's housing-reform package that replaced single-family-only zoning with low- and mid-scale residential zones and added the two-ADU allowance (Tacoma Municipal Code 13.06.150), implementing Washington's HB 1337 and HB 1110. Tacoma also publishes a pre-approved detached-ADU program to streamline permitting.
This is an informational summary — verify current rules with the city's planning/permitting department; not legal advice.
See also: Washington ADU law and what is an ADU?
Data source
Sourced from City of Tacoma ArcGIS open data (Esri). Public records (WA Public Records Act).
Nearby cities — Washington
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Informational only, not legal advice. Headline counts reflect all permits Igni has tracked for this jurisdiction; the table shows recent activity. Housing law changes — verify current statutes before relying on this.