The Shed RegistryThe 10 Longest-Standing Sidewalk Sheds in NYC
The longest-standing sidewalk shed on the list is at 409 EDGECOMBE AVENUE in Manhattan. Its current DOB permit has been renewed 18 times, which at 90 days per renewal represents roughly 1,620 days on site. The top 10 average 15 renewals (about 1,350 days) across 3 boroughs.
| # | Address | Borough | Renewals | Est. Days Standing |
|---|---|---|---|---|
| 1 | 409 EDGECOMBE AVENUE | Manhattan | 18 | 1,620 |
| 2 | 360 CENTRAL PARK WEST | Manhattan | 16 | 1,440 |
| 3 | 1772 2ND AVENUE | Manhattan | 16 | 1,440 |
| 4 | 66 READE STREET | Manhattan | 15 | 1,350 |
| 5 | 440 WEST 21 STREET | Manhattan | 15 | 1,350 |
| 6 | 1533 48 STREET | Brooklyn | 14 | 1,260 |
| 7 | 59 MAIDEN LANE | Manhattan | 14 | 1,260 |
| 8 | 350 EAST 10 STREET | Manhattan | 14 | 1,260 |
| 9 | 139 ORCHARD STREET | Manhattan | 14 | 1,260 |
| 10 | 425 GRAND CONCOURSE | Bronx | 13 | 1,170 |
Methodology
- Dataset
- NYC Open Data, DOB Sidewalk Sheds dataset (resource id 2jy7-cddj). Filtered to permit_subtype = SH with permit_status = ISSUED.
- Date range
- Point-in-time snapshot of currently-ISSUED permits. Permit sequence numbers reflect cumulative 90-day renewals since the shed was first permitted at that building.
- Query logic
- The dataset does not expose an explicit issuance date, so permit_sequence (the DOB renewal counter) is used as an age proxy. Each renewal covers a 90-day window under Local Law 48 rules, so a currently-ISSUED permit at sequence N represents approximately N times 90 days on site. Results are deduplicated by address so a single building appears at most once, keyed on the highest sequence.
- Exclusions
- Permits outside the sidewalk shed subtype, permits not currently ISSUED, permits with a non-numeric sequence value, and duplicate address rows with lower sequence.
- Last updated
- 2026-04-23
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Frequently Asked Questions
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