Ans: You can amend internally, but for external amendments, approval must be sought from the estate management firm and relevant government quarters. However, Gate house, Generator house and Perimeter fence are allowed in the following dimensions: The Gate House must be ensuite and not more than 12m2 inclusive of any space for cooking if necessary. –  The generator house should not be more than 4.5ft and 7-10sqm in space. –  Low fence (American fence type) block work height of not more than 1m to the ground. –  BQ structure may be approved for the 3 Bedroom fully detached structure according to RPL’s proto type design and specifications.