Campbell building & ADU permits
Recent permit activity, updated continuously.
Campbell is a small Santa Clara County city between San Jose and Los Gatos in Silicon Valley. Its building division files ADUs under dedicated work types — detached, attached, garage conversion and legalization of an existing unit — so each kind of ADU project is visible in the permit record.
Igni is tracking 397 residential and building permits in Campbell, CA — including 15 classified accessory-dwelling-unit (ADU) filings. The most active ZIP is 95008. The most recent filing Igni tracked was Nov 6, 2026. All records come from City of Campbell (MyGovernmentOnline / ArcGIS), an official government open-data feed, and are refreshed continuously.
397
Permits tracked
15
ADU permits
4
Distinct ZIP codes
Nov 6, 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 |
|---|---|---|---|---|
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 2, 2026 |
| 95008 | Commercial | — | — | Nov 2, 2026 |
| 95008 | Commercial | — | — | Nov 2, 2026 |
| 95008 | Residential | — | — | Nov 3, 2026 |
| 95008 | Residential | — | — | Nov 3, 2026 |
| 95008 | Commercial | — | — | Nov 3, 2026 |
| 95008 | Residential | — | — | Nov 4, 2026 |
| 95008 | Residential | — | — | Nov 4, 2026 |
| 95008 | Residential | Detached ADU | — | Nov 4, 2026 |
| 95008 | Residential | — | — | Nov 4, 2026 |
| 95125 | Residential | — | — | Nov 4, 2026 |
| 95032 | Residential | — | — | Nov 4, 2026 |
| 95008 | Residential | — | — | Nov 4, 2026 |
| 95008 | Residential | — | — | Nov 5, 2026 |
| 95008 | Residential | — | — | Nov 5, 2026 |
Top ZIP codes by recent activity
ADU types in the recent set
Permit activity in Campbell
Igni counted 1,955 permits issued in Campbell over the last 12 months (Oct 2025 – Sep 2026) — down 5.8% on the 2,076 in the 12 months before. The forecast expects about 978 over the next 6 months.
Forecast: trailing mean, typical error ±10% in backtests one to six months ahead. How we forecast
| Permit type | Last 12 months | Year over year | Forecast, next 6 months |
|---|---|---|---|
| All permits | 1,955 | Down 5.8% | ≈ 978 |
| Residential building | 551 | Down 39.0% | ≈ 209 |
| Commercial building | 78 | — | — |
| Trade (electrical, plumbing, mechanical) | 1,276 | Up 21.9% | ≈ 680 |
| ADU | 55 | — | — |
Monthly figures
| Month | Permits | 10th–90th percentile |
|---|---|---|
| Oct 2023 | 140 | — |
| Nov 2023 | 135 | — |
| Dec 2023 | 98 | — |
| Jan 2024 | 188 | — |
| Feb 2024 | 114 | — |
| Mar 2024 | 119 | — |
| Apr 2024 | 151 | — |
| May 2024 | 146 | — |
| Jun 2024 | 142 | — |
| Jul 2024 | 114 | — |
| Aug 2024 | 327 | — |
| Sep 2024 | 197 | — |
| Oct 2024 | 173 | — |
| Nov 2024 | 185 | — |
| Dec 2024 | 146 | — |
| Jan 2025 | 207 | — |
| Feb 2025 | 143 | — |
| Mar 2025 | 199 | — |
| Apr 2025 | 164 | — |
| May 2025 | 108 | — |
| Jun 2025 | 208 | — |
| Jul 2025 | 206 | — |
| Aug 2025 | 183 | — |
| Sep 2025 | 154 | — |
| Oct 2025 | 206 | — |
| Nov 2025 | 145 | — |
| Dec 2025 | 109 | — |
| Jan 2026 | 153 | — |
| Feb 2026 | 170 | — |
| Mar 2026 | 166 | — |
| Apr 2026 | 181 | — |
| May 2026 | 180 | — |
| Jun 2026 | 175 | — |
| Jul 2026 | 162 | — |
| Aug 2026 | 175 | — |
| Sep 2026 | 133 | — |
| Oct 2026 (forecast) | ≈ 163 | 113–179 |
| Nov 2026 (forecast) | ≈ 163 | 112–179 |
| Dec 2026 (forecast) | ≈ 163 | 126–178 |
| Jan 2027 (forecast) | ≈ 163 | 128–176 |
| Feb 2027 (forecast) | ≈ 163 | 131–174 |
| Mar 2027 (forecast) | ≈ 163 | 131–173 |
Counts are permits issued per calendar month as Campbell 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 Campbell?
Based on 5,577 Campbell permits applied for between Nov 2023 and Aug 2026, the typical (median) permit was issued 5 days after application, and the middle half of permits took 1–32 days. One in ten took longer than 153 days.
| Permit type | Median | Typical range | Permits |
|---|---|---|---|
| All permits | 5 days | 1–32 days | 5,577 |
| Residential building | 13 days | 3–66 days | 2,280 |
| Commercial building | 83 days | 32–180 days | 228 |
| Trade (electrical, plumbing, mechanical) | 1 day | 0–8 days | 2,967 |
| ADU | 196 days | 112–436 days | 177 |
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 — California
California mandates ministerial (by-right) approval of accessory dwelling units statewide, with a 60-day decision deadline and one ADU plus one junior ADU allowed on most single-family lots; owner-occupancy is generally not required.
SB 9 allows by-right duplexes and urban lot splits on single-family lots, and newer transit-oriented upzoning (SB 79) phases in from 2026.
Data source
Sourced from City of Campbell (MyGovernmentOnline / ArcGIS). Public records (no declared open license).
Nearby cities — California
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Campbell permit records into leads.
Campbell permit data — FAQ
Where does Igni get Campbell permit data?
How fresh is Campbell permit data?
How long does it take to get a building permit in Campbell?
Is construction activity growing in Campbell?
Does Campbell allow accessory dwelling units (ADUs)?
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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.