Terrace house definition debated in loft conversion legality

In determining that a loft conversion at a dwelling in east London would be permitted under Class B of Part 1 of Schedule 2 of the GPDO 2015, an inspector had to determine whether the appeal property was terraced or semi-detached.

The cubic content of the development would be between 48m3 and 49m3. The council argued that this exceeded the 40m3 permitted under paragraph B.1(d)(i) of the order which applied to terraced houses whereas the appellant stated that under paragraph B.1(d)(ii) the 50m3 limit applied because the house was semi-detached.

The inspector noted that the house looked like a typical two-storey, bay windowed, semi-detached house with a party wall with the house next door. In respect of the house on the other side, both properties had single-storey buildings attached to their two-storey side walls. But there was a small gap between the two single-storey buildings and in his opinion, this meant that the appeal property did not form part of a terrace. The loft conversion was therefore permitted development.

Inspector: David Hainsworth; Written representations

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