Concerns about safety of basement construction unfounded

Planning and listed building consent for a garden basement and replacement side extension at a semi-detached residential property in west London was allowed on appeal with no harm to the listed building itself or those adjoining.

The inspector noted the brick and stucco symmetrical façade to the semi-detached house, along with its adjoining pair, was what made a positive contribution to the significance of the listed buildings and to the character and appearance of the surrounding conservation areas. The inspector held the proposed basement, supported by a construction method statement, had a slight risk of damage to the listed building but generally met the council’s adopted supplementary planning document's requirements for basements. This was despite the proposed basement’s positioning closer to the historic foundations of the building than generally recommended.

Regarding the replacement side extension, third party concerns had been raised regarding the impact of the access to the proposed basement on the foundations of the adjoining property. The inspector concluded no adverse effect, however, on the basis that the council’s policy and SPD on basements made clear that, provided a submitted CMS demonstrated that construction could take place safely, the details of such works were matters to be determined under the Building Regulations and the Party Wall Act. In listed building terms the inspector concluded the extension would preserve its significance and setting and not harm the wider conservation area.

Inspector: Nicholas Taylor; Written representations

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