Rockville building & ADU permits
Recent permit activity, updated continuously.
Rockville is Montgomery County's seat but runs its own permitting, so its records do not appear in the county feed. It publishes the richest field set of any Maryland source Igni tracks — owner, contractor, project description and valuation — and accessory structures and interior conversions are named directly in the case type.
Igni is tracking 243 residential and building permits in Rockville, MD. The most active ZIP is 20850. The most recent filing Igni tracked was Sep 28, 2026. All records come from City of Rockville (ArcGIS), an official government open-data feed, and are refreshed continuously.
243
Permits tracked
0
ADU permits
5
Distinct ZIP codes
Sep 28, 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 |
|---|---|---|---|---|
| 20850 | Other | — | $0 | Sep 22, 2026 |
| 20850 | Residential | — | $0 | Sep 23, 2026 |
| 20850 | Residential | — | $0 | Sep 23, 2026 |
| 20851 | Residential | — | $0 | Sep 25, 2026 |
| 20850 | Residential | — | $0 | Sep 14, 2026 |
| 20854 | Residential | — | $0 | Sep 15, 2026 |
| 20850 | Residential | — | $0 | Sep 15, 2026 |
| 20852 | Commercial | — | $0 | Sep 15, 2026 |
| 20850 | Residential | — | $0 | Sep 17, 2026 |
| 20854 | Residential | — | $0 | Sep 18, 2026 |
| 20852 | Commercial | — | $0 | Aug 28, 2026 |
| 20851 | Residential | — | $0 | Aug 28, 2026 |
| 20850 | Residential | — | $0 | Aug 31, 2026 |
| 20850 | Residential | — | $0 | Aug 31, 2026 |
| 20852 | Residential | — | $0 | Aug 31, 2026 |
| 20854 | Other | — | $0 | Aug 31, 2026 |
| 20850 | Commercial | — | $0 | Aug 31, 2026 |
| 20850 | Residential | — | $0 | Aug 31, 2026 |
| 20852 | Residential | — | $0 | Aug 31, 2026 |
| 20850 | Residential | — | $0 | Sep 1, 2026 |
Top ZIP codes by recent activity
Housing law — Maryland
Accessory dwelling units in Maryland are regulated locally; there is no statewide ADU mandate, so rules vary by city and county.
Maryland has no statewide upzoning law; residential density is set by local zoning, with several counties pursuing their own reforms.
Data source
Sourced from City of Rockville (ArcGIS). Public records (MD PIA).
Nearby cities — Maryland
Learn more about ADUs & building permits
Background reading on accessory dwelling units, building permits, and how Igni turns Rockville permit records into leads.
Rockville permit data — FAQ
Where does Igni get Rockville permit data?
How fresh is Rockville permit data?
Does Rockville allow accessory dwelling units (ADUs)?
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Fresh, filterable residential and ADU permit leads from Rockville — 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.