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How long does a home addition take in Philadelphia?

In Philadelphia, the typical finished home addition took about 12 months (376 days) from permit to final inspection (504 finished of 583 permits issued from September 2022 to September 2024; 14% had no final inspection on record by September 2026).

12 monthsfrom permit to final inspectionMiddle half: 8 months to 20 months

The two steps

How long home additions take in Philadelphia, in daysPermit issued to final inspection: median 376 days, middle half 234 to 601 days, 504 permits.Permit issued to final inspection: about 12 months06 mo12 mo18 mo
Bars show the median; the line through each bar spans the middle half of jobs.
The numbers behind the chart
StepMedianMiddle halfPermitsPermits issued
Permit to final inspectionabout 12 monthsabout 8 months to about 20 months504September 2022 to September 2024

Home addition contractors with the most jobs in Philadelphia

RankContractorJobsContact
1Citylife Collective LLC
28
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2John Hines
12
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3Lapstone LLC
11
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See all 104 ranked home addition contractors

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Why it takes this long

  • 5% of finished jobs passed final inspection within 90 days of the permit.
  • Of the 583 permits issued from September 2022 to September 2024, 79 (14%) 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.
  • The permit wait is not shown: the city's permit data has no application date.

Days are counted between the dates on each city permit: permitissuedate, permitcompleteddate. 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: Philadelphia Licenses and Inspections, Building and Zoning Permits (phl.carto.com permits), read 2026-09-24. The same figures as data: addition.json.