Data through November 2025 · updated 19 Oct 2026
19 ZIP codes have 250 or more building permits in Howard County, December 2023 through November 2025. 21042 is the busiest with 7,110 (21% of 33,773). Together they hold 98% of the permits.
Busiest first, December 2023 through November 2025. Top kind of work is the one with the most permits in that ZIP code.
| ZIP code | Permits | Share | Top kind of work |
|---|---|---|---|
| 21042 | 7,110 | 21% | Electrical (2,460) |
| 20723 | 4,541 | 13% | Electrical (1,444) |
| 21043 | 3,807 | 11% | Electrical (1,339) |
| 21044 | 3,581 | 11% | Electrical (1,299) |
| 21045 | 2,963 | 9% | Plumbing (1,110) |
| 21075 | 2,235 | 7% | Electrical (763) |
| 21029 | 1,627 | 5% | Electrical (650) |
| 20759 | 1,240 | 4% | Electrical (466) |
| 21046 | 1,142 | 3% | Electrical (476) |
| 21104 | 993 | 3% | Electrical (266) |
| 21797 | 738 | 2% | Electrical (287) |
| 20794 | 562 | 2% | Electrical (204) |
| 20777 | 515 | 2% | Electrical (194) |
| 21163 | 449 | 1% | Electrical (174) |
| 21738 | 388 | 1% | Electrical (155) |
| 21036 | 380 | 1% | Electrical (151) |
| 21794 | 280 | under 1% | Electrical (99) |
| 21771 | 271 | under 1% | Electrical (119) |
| 21737 | 268 | under 1% | Electrical (98) |
6 more ZIP codes have fewer than 250 permits each (681 in all), so no page.
Source: Howard County Open Data, Building, Electrical, Fire, Grading, Mechanical, Plumbing & Sign Permits (Socrata dataset kvz2-j5cj), read 19 Oct 2026. We count permits issued December 2023 through November 2025; denied and withdrawn permits are left out. The county's file has no permit status or final inspection date, so it can't say which permits were finished, so no finished share is shown.
Residential permits Howard County's Department of Inspections, Licenses and Permits issues countywide: new houses and townhouses, alterations, additions, decks and porches, solar, pools, demolition, and electrical, plumbing, HVAC and fire-sprinkler permits for homes. Howard County has no incorporated towns, so Columbia, Ellicott City, Elkridge, Clarksville, the Howard County parts of Laurel and Mount Airy and the rest of the county are all in this file. Commercial and sign permits in the same file are not counted, and grading permits are left out.
Counts are permits, not jobs: one job can need several permits. Nobody paid to be on this page and nobody can. Sources and definitions →
Free to reuse with attribution (CC BY 4.0). Please credit Contractor Records and link to this page. Suggested citation:
Contractor Records, "Building permits by ZIP code in Howard County", https://contractorrecords.com/howard-county/zip/, data through November 2025, from Howard County Department of Inspections, Licenses and Permits building-permit records.Link to a table: ZIP codes by permits.
Download the tables (CSV): ZIP codes by permits.