Open Space Requirements

Question 1

Purpose of open space

Answer 1

To maintain adequate lighting and ventilation for domestic buildings with in class A, B or C

Question 2

Regulation 25: Open space criteria. Where should an open space be located in a domestic building of class A,B or C?

Answer 2

At the rear, or partly at the site and partly at the rear. At a level not less than 150 mm below the floor of the lowermost storey ( for domestic use).
No part of the building which bounds with the open space at any level, should be within 1.5 m horizontally from the boundary of the open space

Question 3

Amount of open space required in domestic buildings

Answer 3

Class A: not less than 1/2 of the roofed-over area of the building
Class B: not less than 1/3 of the roofed-over area of the building
Class C: not less than 1/4 of the roofed-over area of the building