Pierce County building & ADU permits
Recent permit activity, updated continuously.
Pierce County covers the Puget Sound region south of Seattle — unincorporated areas around Tacoma, Spanaway, Gig Harbor and Puyallup — and is permitted separately from the City of Tacoma. Its PALS permit system publishes a dedicated housing-type field that marks accessory dwelling units explicitly, so ADU projects are identified structurally rather than by keyword, including while they are still in review.
Igni is tracking 520 residential and building permits in Pierce County, WA — including 11 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 98391. The most recent filing Igni tracked was Sep 26, 2026. All records come from open.piercecountywa.gov (Socrata), an official government open-data feed, and are refreshed continuously.
520
Permits tracked
11
ADU permits
29
Distinct ZIP codes
Sep 26, 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 |
|---|---|---|---|---|
| 98328 | Residential | — | $542,223 | Aug 27, 2026 |
| 98391 | Residential | — | $744,949 | Sep 8, 2026 |
| 98391 | Residential | — | $19,534 | Sep 10, 2026 |
| 98373 | Commercial | — | $10,000 | Sep 10, 2026 |
| 98321 | Residential | — | $120,334 | Sep 10, 2026 |
| 98375 | Commercial | — | $92,825 | Sep 10, 2026 |
| 98391 | Residential | — | $499,416 | Sep 10, 2026 |
| 98391 | Residential | — | $450,010 | Sep 10, 2026 |
| 98391 | Residential | — | $357,985 | Sep 10, 2026 |
| 98391 | Residential | — | $418,470 | Sep 10, 2026 |
| 98338 | Residential | Detached ADU | $373,951 | Sep 10, 2026 |
| 98387 | Residential | — | $4,053 | Sep 10, 2026 |
| 98349 | Residential | — | $41,011 | Sep 10, 2026 |
| 98394 | Residential | — | $10,433 | Sep 10, 2026 |
| 98338 | Residential | — | $13,311 | Sep 10, 2026 |
| 98580 | Residential | — | $30,610 | Sep 10, 2026 |
| 98332 | Residential | — | $20,056 | Sep 10, 2026 |
| 98375 | Commercial | — | $30,000 | Sep 11, 2026 |
| 98304 | Residential | — | $399,508 | Sep 11, 2026 |
| 98335 | Residential | — | $449,477 | Sep 11, 2026 |
Top ZIP codes by recent activity
ADU types in the recent set
Permit activity in Pierce County
Igni counted 3,199 permits issued in Pierce County over the last 12 months (Sep 2025 – Aug 2026) — down 1.6% on the 3,251 in the 12 months before. The forecast expects about 1,542 over the next 6 months.
Forecast: Holt–Winters, typical error ±14% in backtests one to six months ahead. How we forecast
| Permit type | Last 12 months | Year over year | Forecast, next 6 months |
|---|---|---|---|
| All permits | 3,199 | Down 1.6% | ≈ 1,542 |
| Residential building | 2,765 | Down 1.7% | ≈ 1,331 |
| Commercial building | 434 | Flat (−0.9%) | — |
| Trade (electrical, plumbing, mechanical) | 0 | — | — |
| ADU | 87 | — | ≈ 42 |
Monthly figures
| Month | Permits | 10th–90th percentile |
|---|---|---|
| Sep 2023 | 332 | — |
| Oct 2023 | 312 | — |
| Nov 2023 | 269 | — |
| Dec 2023 | 228 | — |
| Jan 2024 | 268 | — |
| Feb 2024 | 314 | — |
| Mar 2024 | 263 | — |
| Apr 2024 | 251 | — |
| May 2024 | 254 | — |
| Jun 2024 | 210 | — |
| Jul 2024 | 280 | — |
| Aug 2024 | 226 | — |
| Sep 2024 | 219 | — |
| Oct 2024 | 278 | — |
| Nov 2024 | 314 | — |
| Dec 2024 | 254 | — |
| Jan 2025 | 348 | — |
| Feb 2025 | 252 | — |
| Mar 2025 | 270 | — |
| Apr 2025 | 261 | — |
| May 2025 | 249 | — |
| Jun 2025 | 225 | — |
| Jul 2025 | 325 | — |
| Aug 2025 | 256 | — |
| Sep 2025 | 226 | — |
| Oct 2025 | 279 | — |
| Nov 2025 | 224 | — |
| Dec 2025 | 200 | — |
| Jan 2026 | 257 | — |
| Feb 2026 | 214 | — |
| Mar 2026 | 278 | — |
| Apr 2026 | 353 | — |
| May 2026 | 306 | — |
| Jun 2026 | 336 | — |
| Jul 2026 | 262 | — |
| Aug 2026 | 264 | — |
| Sep 2026 (forecast) | ≈ 270 | 226–382 |
| Oct 2026 (forecast) | ≈ 297 | 248–422 |
| Nov 2026 (forecast) | ≈ 237 | 197–347 |
| Dec 2026 (forecast) | ≈ 238 | 202–347 |
| Jan 2027 (forecast) | ≈ 253 | 214–366 |
| Feb 2027 (forecast) | ≈ 247 | 210–358 |
Counts are permits issued per calendar month as Pierce County publishes them to its open-data feed — not a complete census; a change in what the city publishes moves them too. The current month is left out, and the most recent months are provisional. A forecast is a statistical estimate with a range, not a prediction for any project. Informational only.
How long do permits take in Pierce County?
Based on 8,355 Pierce County permits applied for between Sep 2023 and Jun 2026, the typical (median) permit was issued 30 days after application, and the middle half of permits took 11–85 days. One in ten took longer than 204 days.
| Permit type | Median | Typical range | Permits |
|---|---|---|---|
| All permits | 30 days | 11–85 days | 8,355 |
| Residential building | 27 days | 10–76 days | 7,285 |
| Commercial building | 63 days | 24–209 days | 1,070 |
| ADU | 96 days | 58–208 days | 199 |
Typical, not guaranteed: individual permits vary with project scope, application completeness and plan-review workload. Days are calendar days from application to issuance; applications still pending are counted as not-yet-issued rather than dropped. Informational only, not legal advice. How we calculate approval times.
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.
Data source
Sourced from open.piercecountywa.gov (Socrata). Public records (WA PRA).
Nearby cities — Washington
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Pierce County permit records into leads.
Pierce County permit data — FAQ
Where does Igni get Pierce County permit data?
How fresh is Pierce County permit data?
How long does it take to get a building permit in Pierce County?
Is construction activity growing in Pierce County?
Does Pierce County allow accessory dwelling units (ADUs)?
Get permit leads — Pierce County
Fresh, filterable residential and ADU permit leads from Pierce County — delivered before your competitors even know.
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.