Victorian terraces in Brent frequently fall within Article 4 direction zones, which remove permitted development rights for extensions that would otherwise be automatic. This client's property in Willesden required a householder planning application for what would have been a straightforward side return extension elsewhere in London.
The key design constraint was Brent's 45-degree rule applied from the nearest neighbouring habitable room window. We modelled the extension in section to confirm compliance before finalising dimensions — the extension was set at 3.5m depth rather than 4m to maintain full compliance with no ambiguity.
Materials were matched to the existing stock: yellow London stock brick for the rear wall, with a flat roof covered in EPDM rubber and a full-width glazed roof lantern. The lantern brought natural light into the depth of the rear reception, addressing Brent's daylight policy requirements without additional calculation.
Application validated and approved in exactly 8 weeks. The officer's decision notice specifically noted the quality of the submitted drawings as a positive factor in the smooth determination.
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