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Building permits by ZIP code in Howard County

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.

ZIP codes by permits

Busiest first, December 2023 through November 2025. Top kind of work is the one with the most permits in that ZIP code.

ZIP codePermitsShareTop kind of work
210427,11021%Electrical (2,460)
207234,54113%Electrical (1,444)
210433,80711%Electrical (1,339)
210443,58111%Electrical (1,299)
210452,9639%Plumbing (1,110)
210752,2357%Electrical (763)
210291,6275%Electrical (650)
207591,2404%Electrical (466)
210461,1423%Electrical (476)
211049933%Electrical (266)
217977382%Electrical (287)
207945622%Electrical (204)
207775152%Electrical (194)
211634491%Electrical (174)
217383881%Electrical (155)
210363801%Electrical (151)
21794280under 1%Electrical (99)
21771271under 1%Electrical (119)
21737268under 1%Electrical (98)

6 more ZIP codes have fewer than 250 permits each (681 in all), so no page.

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 We count permits issued December 2023 through November 2025; denied and withdrawn permits are left out.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

Common questions

  • Which ZIP code in Howard County has the most building permits?21042, with 7,110 permits, December 2023 through November 2025; then 20723 (4,541).
  • Can I see the permits for one address in Howard County?Not here: we publish permits by ZIP code without street addresses. The county keeps each property's permit history; search its records by address or permit number.