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URA e-Services will undergo maintenance on Friday, 28 August 2026 from 10 pm to 5 am the next day and will be unavailable during this period. We apologise for any inconvenience caused.

Urban Redevelopment Authority (URA)

Refuse Chambers and Refuse Chutes

Find out the GFA treatment for refuse chambers and refuse chutes

Last updated 6 June 2026

Refuse chutes are excluded from GFA.

Refuse chambers and Discharge Valve (DV) chambers (part of a pneumatic system) located within fully sunken basement carparks are excluded from GFA.

Outside of basement carparks, refuse chambers and DV chambers with headroom of up to 1.8m are excluded from GFA.

Section diagram showing refuse chamber with headroom below 1.8m excluded from GFA

Refuse Chute and Refuse Chamber (Section)

Section diagram showing discharge valve chamber with headroom below 1.8m

Discharge Valve Chamber (Section)