London : Règlement no CP-24, art. 4.8.5 — Headroom – Heights The minimum floor to ceiling headroom for habitable space shall

Headroom – Heights The minimum floor to ceiling headroom for habitable space shall:

• a) not be less than 1.95 m (6 ft 5
• in) over the floor area and in any location that would normally be used as a means of egress; or
• b) not be less than 1.95 m (6 ft 5
• in) over at least 50% of the floor area, provided that any part of the floor having a clear height of less than 1.4 m (4 ft 7
• in) shall not be considered in computing the floor area. However, a minimum height of 1.95 m (6 ft 5
• in) shall be required for all floor area used as a means of egress. As of January 1, 2025 The minimum floor to ceiling headroom for habitable space shall:
• a) not be less than 1.85 m (6 ft 1
• in) over the floor area and in any location that would normally be used as a means of egress; or
• b) not be less than 1.85 m (6 ft 1
• in) over at least 50% of the floor area, provided that any part of the floor having a clear height of less than 1.4 m (4 ft 7
• in) shall not be considered in computing the floor area. However, a minimum height of 1.85 m (6 ft 1
• in) shall be required for all floor area used as a means of egress.