The original height of the building or part thereof to be conserved is to be retained.
The allowable height for new extensions is dependent on the Development Control Guidelines of the respective Planning Areas, and the development type.
Extensions to Landed housing will be subject to the three-dimensional limits under the Envelope Control Guidelines for Landed Housing, and shall not exceed the overall two or three-storey height control of their respective landed estates.
Up to 5 storeys
Up to 6 storeys (west of Kallang Paya Lebar Expressway)
Along the Lorongs: up to 8 storeys
Also subject to the Geylang Urban Design Guidelines (GUDG)
For units no. 241-259 (odd nos. only): up to 5 storeys
Blocks 55-59, 64-66, 71-82: Not applicable (conservation of entire building)
Minimally, the front 7.5m of the conservation building must be conserved. The rear portion of the site can be built up to a maximum of 6 storeys.
The above is not applicable for units 27, 29, 31 & 33 New Bridge Road where the entire main pitched roof is to be conserved. For the other units, conservation of the entire main building or main pitched roof is encouraged.