### Building (Planning) Regulations 《建築物(規劃)規例》

32. Restriction on distance any part of room may be from prescribed window
No part of any room used for habitation shall be more than 9 m, measured within the room, from a prescribed window which faces directly into the external air or, where, under and in accordance with regulation 33, a window opens on to an enclosed verandah or balcony or on to a conservatory or on to any similar enclosed place or is, under regulation 71, permitted to open on to an unenclosed verandah or balcony or any other unenclosed place, from the outer edge of the verandah, balcony, conservatory or enclosed or unenclosed place, as the case may be.
(G.N.A. 83 of 1959; L.N. 294 of 1976)

33. Windows opening on to enclosed verandah, etc.
Where any room used or intended to be used for habitation or for the purposes of an office has a window which opens on to an enclosed verandah or balcony or on to a conservatory or on to any similar enclosed place, within, in each case, the boundary of the site on which the building is erected, such window shall be deemed to comply with the requirements of regulations 30 and 31 if—
(a) such verandah, balcony, conservatory or similar enclosed place is provided with a window which would comply with the requirements of regulations 30 and 31 if it were the window of a room having a floor area equivalent to the aggregate of the areas of the floors of such room and such verandah, balcony, conservatory or similar enclosed place, as the case may be; and
(b) the area of glass and the opening in the window of such room is such that, to that extent, such window would comply with the requirements of regulation 30(2)(a) if it were likewise the window of a room having a floor area equivalent to the aggregate of the areas of the floors of such room and such verandah, balcony, conservatory or similar enclosed place.
(G.N.A. 83 of 1959; G.N.A. 97 of 1962)

34. Mechanical ventilation and artificial lighting of offices
Where, owing to the position, level or unsuitable surroundings of any room used or intended to be used for the purposes of an office, the provisions of regulation 31 cannot be complied with, in respect of such room, to the satisfaction of the Building Authority, there shall be provided—
(a) a mechanical means of ventilation which shall be capable of supplying fresh air to all parts of such room at a rate of not less than 5 changes of air per hour; and
(b) such artificial lighting as the Building Authority may approve.
(G.N.A. 83 of 1959)

### Building (Planning) Regulations 《建築物(規劃)規例》

35. Additional vent may be required
(1) Where in the opinion of the Building Authority compliance with the provisions of these regulations will not secure adequate ventilation for any room used for such purposes by reason of its intended use, unsuitable surroundings or other cause he may require that room to be provided with additional ventilation by means of—
(a) an aperture or airshaft communicating direct with the open air, having an unobstructed sectional area of not less than 0.015 m2; or (L.N. 294 of 1976)
(b) a fanlight which opens to a ventilated lobby or corridor; or
(c) such other means of ventilation as shall be approved by him.
(2) For the purpose of regulations 29 to 35, a laundry being part of or used in connexion with any building shall be deemed to be used for the purpose of habitation. 

35A. Provision for room-sealed gas water heater in bathrooms
(1) Subject to paragraphs (2) and (3), suitable provision shall be made for the installation of a room-sealed gas water heater in every bathroom in a building.
(2) Where a room-sealed gas water heater to serve a bathroom is, or is to be, installed in any place in a building other than in the bathroom, suitable provision shall be made for the installation of such room-sealed gas water heater.
(3) This regulation shall not apply—
(a) to a building in respect of which the Building Authority has, or is deemed to have, approved the plan of building works under this Ordinance on or before 20 May 1983; or
(b) to a building which is designed, to the satisfaction of the Building Authority, to have available therein a centralized hot water supply.
(4) For the purposes of this regulation—
room-sealed gas water heater (密封式氣體熱水爐) means a gas water heater which, when in operation, has the combustion air inlet and the combustion products outlet isolated from the room or place in which the gas water heater is installed;
suitable provision (適當設施) means an adequate aperture in an external wall, to the satisfaction of the Building Authority, to provide direct access to the external air in respect of a room-sealed gas water heater which is or may be installed, and which aperture is capable of being sealed with a readily removable cover when a room-sealed gas water heater is not installed.
(L.N. 143 of 1983)

### Building (Planning) Regulations 《建築物(規劃)規例》

36. Rooms containing soil fitments
(1) Every room containing a soil fitment or waste fitment shall be provided with a window or lantern light.
(2) Every such window or lantern light shall be such that—
(a) the aggregate superficial area of glass therein is not less than the equivalent of one-tenth of the area of the floor of the room; and
(b) a part thereof, not less in area than the equivalent of one-tenth of the area of the floor of the room, can be opened directly into the open air.
(3) The top of that part of any such window which, in accordance with paragraph (2), is designed to open shall be not less than 2 m above the level of the floor of the room. (L.N. 294 of 1976)
(4) No room containing a soil fitment shall open directly into a room used or intended to be used for the manufacture, preparation or storage of food for human consumption or into the auditorium or any space in a place of public entertainment in which persons await admission to public entertainment. (L.N. 194 of 1996)
(5) For the purposes of this regulation, the expression, soil fitment (便溺污水設備) means a water-closet fitment, a trough water-closet or a urinal.
(G.N.A. 83 of 1959; G.N.A. 97 of 1962)

37. Light and air not to be diminished
No building shall be erected in such a manner as to reduce the quantity of light and air available to any other building, which has been erected in accordance with these regulations, below that required under these regulations.