Sleeping lofts: < 70 sqft, ceiling height 7 ft below + 3 ft above, ladder OK as egress
2025 RCNYS §R315 Sleeping loftsDescription
A "sleeping loft" is a modified mezzanine intended for sleeping. Lofts must be < 70 sqft (above 70 sqft they become habitable rooms with full requirements). Clear height below the loft floor: ≥ 7 ft. Clear height above the loft floor: ≥ 3 ft, with the higher ceiling required only over the egress path. Egress may use a stairway (≥ 17 in wide above handrail, 20 in below; riser 7-12 in) OR a ladder (rung width ≥ 12 in, rung spacing 10-14 in, 70-80° incline, 300-lb load capacity).
Why this exists
NY's loft rules unlock the legal tiny-house / accessory-dwelling sleeping loft. The < 70 sqft cap is what keeps it from triggering full bedroom requirements (egress window, smoke alarm in-room, ceiling height). The ladder allowance is the practical egress for a small loft where a stair won't fit.
Measurements
| Property | Operator | Value | Unit | Note |
|---|---|---|---|---|
maxArea | max | 70 | sqft | Maximum sleeping loft area |
headBelow | min | 7 | ft | Clear ceiling height below loft |
headAbove | min | 3 | ft | Clear ceiling height above loft floor |
ladderRungWidth | min | 12 | in | Egress ladder rung width |
ladderIncline | range | 70–80 | degrees | Egress ladder angle from horizontal |
Categories
Applies to
- Jurisdiction: New York State
Source
Solver enforcement
Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.
Related directives
- Garage / dwelling fire separation · IRC R302.6
- Habitable space minimum ceiling height · IRC R305.1
- Egress window net opening dimensions · IRC R310.2
- Stair riser, tread, and headroom · IRC R311.7
- Smoke alarms required throughout dwelling · IRC R314
Last reviewed 2026-05-15.