01Which buildings
Buildings with gas piping must have it inspected periodically, except one- and two-family homes (R-3 occupancies). That includes most apartment buildings, co-ops, condos and mixed-use buildings.
02How often and when
At least once every four years, on a schedule set by community district.
| Community districts | Inspection year |
|---|---|
| 1, 3, 10 | 2024 (next cycle 2028) |
| 2, 5, 7, 13, 18 | 2025 |
| 4, 6, 8, 9, 16 | 2026 |
| 11, 12, 14, 15, 17 | 2027 |
03What the inspection covers
- Exposed gas piping from the point of entry, including public spaces, hallways, corridors and mechanical rooms
- Signs of leaks, corrosion, illegal connections and other hazards
- Performed by a Licensed Master Plumber, or a qualified person under one
04After the inspection
- The inspector reports findings to the owner; a certification is filed with DOB
- Conditions found must be corrected within set time frames
- Hazardous conditions are reported to the utility and DOB immediately
05Frequently asked questions
Does my one-family house need an LL152 inspection?
No. One- and two-family homes are excluded.
Who can I contact at DOB?
DOB's gas piping compliance unit: (212) 323-8001 or [email protected].
06Related
Guides & rules
Sources & review
Last reviewed . General information, not legal or engineering advice. Rules change and individual buildings differ.