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How long does a home addition permit take in New York?

In New York, the typical home addition permit took about 6 months (193 days) from application to issue, across 347 permits issued from September 2024 to September 2026. After the permit, the typical finished home addition took about 15 months (444 days) from permit to final inspection (134 finished of 352 permits issued from September 2022 to September 2024; 62% had no final inspection on record by September 2026).

6 monthsfrom application to permitMiddle half: 3 months to 13 months
15 monthsfrom permit to final inspectionMiddle half: 8 months to 22 months

The two steps

How long home additions take in New York, in daysApplication to permit issued: median 193 days, middle half 96 to 406 days, 347 permits; Permit issued to final inspection: median 444 days, middle half 233 to 678 days, 134 permits.Application to permit issued: about 6 monthsPermit issued to final inspection: about 15 months06 mo12 mo18 mo24 mo
Bars show the median; the line through each bar spans the middle half of jobs. The second step starts where the typical permit wait ends. The two steps come from different groups of permits, so they are not added up.
The numbers behind the chart
StepMedianMiddle halfPermitsPermits issued
Application to permit issuedabout 6 monthsabout 3 months to about 13 months347September 2024 to September 2026
Permit to final inspectionabout 15 monthsabout 8 months to about 22 months134September 2022 to September 2024

Home addition contractors with the most jobs in New York

RankContractorJobsContact
1Mdg Design & Constr LLC
Woodbury, license 31838
17
Visit website
2Moken Home Improvement
Baldwin, license 616733
12
Call (718) 371-8882
3Custombuilt Homes Inc
Bellerose, license 36215
10
Call (718) 470-1171

See all 37 ranked home addition contractors

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Permit wait by year issued

Year issuedJobsMedianMiddle half
202245about 6 months85 days to about 9 months
2023181about 6 months89 days to about 9 months
2024173about 6 monthsabout 4 months to about 14 months
2025169about 5 monthsabout 3 months to about 10 months
2026131about 9 monthsabout 4 months to about 15 months

Why it takes this long

  • 0% of permits were issued the day they were applied for, and 5% within 30 days (347 permits).
  • The longer step is building and inspection: about 6 months for the permit against about 15 months from permit to final, at the median.
  • 9% of finished jobs passed final inspection within 90 days of the permit.
  • Of the 352 permits issued from September 2022 to September 2024, 218 (62%) had no final inspection on record by September 2026. They may still be under way, dropped or never inspected; the records do not say which. They are left out of the build time; any of them that finishes will have taken more than two years, so counting them would make the typical time longer.

Days are counted between the dates on each city permit: filing_date, issued_date, signoff_date. Median and middle half: half of the jobs took longer than the median; the middle half runs from the 25th to the 75th percentile. A figure is shown only when it rests on 30 or more permits. Kinds of work are sorted by the same rules as our contractor lists. Source: NYC DOB NOW: Build, Approved Permits (rbx6-tga4) joined to Job Application Filings (w9ak-ipjd), read 2026-09-24. The same figures as data: addition.json.