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).
The two steps
The numbers behind the chart
| Step | Median | Middle half | Permits | Permits issued |
|---|---|---|---|---|
| Permit to final inspection | about 12 months | about 8 months to about 20 months | 504 | September 2022 to September 2024 |
Home addition contractors with the most jobs in Philadelphia
| Rank | Contractor | Jobs | Contact |
|---|---|---|---|
| 1 | Citylife Collective LLC | Get a quote | |
| 2 | John Hines | Get a quote | |
| 3 | Lapstone LLC | Get a quote |
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.