Recently, I bought a house sited on a rectangular land with a frontage of about 15m and has a depth of about 43m. Thinking of rebuilding it into a pair of semi detached. The house is under the name of 2 persons. Will this attract development charge from the government if the newly rebuilt house is split between the 2 persons and each own one semi detached house? If development charge is to be applied, how much is the charge and how is it calculated?