Semi-detached dwelling side extensions - setback and setdown requirements

A further concern may arise where a side extension to a semi-detached dwelling is proposed at the same height and follows the same building line as the block comprising an original pair of dwellings. This will often compromise the appearance and architectural integrity of the block, and if repeated throughout a neighbourhood is likely to have an adverse impact upon the character of the wider area. To address this particular problem, proposals of this nature should be 'set back' from the building line or front of the house and also 'set down' from the ridge line.