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Building permits in 21045, Howard County

Data through November 2025 · updated 19 Oct 2026

2,963 building permits were issued in ZIP code 21045 by Howard County Department of Inspections, Licenses and Permits, December 2023 through November 2025: 9% of the 33,773 in Howard County, the 5th busiest ZIP code. Plumbing permits lead with 1,110. 1,550 permits in the last 12 months on file (Dec 2024–Nov 2025), 10% more than the 1,413 in the 12 months before. Permits from a city that runs its own permit office are not counted.

2,963permits in 21045
1,550last 12 months on file
100%for homes
Nov 2025records through

Permits in 21045 by kind of work

Share here is the part of the 2,963 permits in 21045; countywide is the same for all of Howard County.

Kind of workPermitsShare hereCountywide
Plumbing1,11037%29%
Electrical1,04935%35%
HVAC2107%9%
Garages, sheds & shade structures1686%5%
Remodels & repairs1595%4%
Solar1525%6%
Additions642%3%
New homes12under 1%3%
Pools & spas4under 1%under 1%
Other351%5%

Download this table (CSV)

Permits in 21045 by year

Permits issued in each calendar year of the window.

YearMonthsPermitsPer year
2023 (from December)1891,068
2024121,4331,433
2025 (through November)111,4411,572

Download this table (CSV)

How these numbers are made

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 We count permits issued December 2023 through November 2025; denied and withdrawn permits are left out.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.

  • The county's file names no contractor, so there are no contractor lists, rankings or firm pages for Howard County.
  • The file has no declared job value, no status and no final inspection date, so we show no costs, no finished share and no time to finish.
  • The county updates the file once a year, in December; the copy on file runs through November 2025, so the counts stop there.
  • The file holds no permits issued between December 2022 and November 2023, so the window starts in December 2023, the first month after the gap.
  • Only the residential permits are counted; a permit that was issued twice under one number is counted once, at its first issue date.

Counts are permits, not jobs: one job can need several permits. Nobody paid to be on this page and nobody can. Sources and definitions →

Cite this page

Free to reuse with attribution (CC BY 4.0). Please credit Contractor Records and link to this page. Suggested citation:

Contractor Records, "Building permits in 21045, Howard County", https://contractorrecords.com/howard-county/zip/21045, data through November 2025, from Howard County Department of Inspections, Licenses and Permits building-permit records.

Link to a table: By kind of work · By year.

Download the tables (CSV): Permits in 21045 by kind of work · Permits in 21045 by year.

Common questions

  • How many building permits were issued in 21045?2,963 permits issued by the county in ZIP code 21045, December 2023 through November 2025: 1,110 plumbing, 1,049 electrical, 210 HVAC. 1,550 were in the last 12 months on file (to November 2025).
  • What is built most in 21045?Plumbing: 1,110 of the 2,963 permits (37%), against 29% countywide.
  • Who did the work in 21045?The county's file doesn't name contractors, so we can't say. Ask a contractor for the permit numbers of past jobs and check them with the county.