Front extensions are always treated cautiously by councils. When the property also lies within a conservation area, refusals can become almost automatic.
That is what happened in this case.
The proposal involved bringing the existing side garage forward so that it aligned with the front wall of the house, converting it into habitable space and replacing the false pitched roof with a modest raised flat roof. The council refused permission on the basis that the extension would be “an intrusive addition” and would harm the character of the street and the Gunnersbury Park Conservation Area.
What the conservation area actually protects
The key to this appeal was understanding why this stretch of Popes Lane sits within the conservation area at all.
The inspector recorded that the Gunnersbury Park Conservation Area Character Appraisal focuses on the significance of the parkland itself and the residential estate to the east, which is described as a relatively unspoilt garden suburb .
By contrast, the houses on Popes Lane are described simply as “typical interwar speculative development” .
These houses fall within the conservation area primarily because they back onto the park. The designation is concerned with protecting the setting of the park and the skyline as seen from it. It is not primarily concerned with freezing the front elevations of ordinary interwar semi-detached houses.
The streetscene in reality
The council relied on its Residential Extension Guidelines, which advise that single-storey side extensions should normally be set back at least one metre from the main front wall. However, the same guidance allows exceptions where symmetry with the adjoining semi-detached property would be restored.
In this case, the neighbouring house already had a forward side projection that aligned with its front elevation. Other nearby houses had flat-roofed side extensions that were flush with the front. The inspector noted the “diverse form, siting and appearance of side extensions in this streetscene” .
He accepted that, although there was a limited conflict with part 4.4 of the SPD, the extension would be faced in matching materials, would remain subordinate in width and height and would provide “a degree of symmetry” with the adjoining house .
Importantly, he concluded that the scheme “would not harm the character and appearance of the host or the area” and that it would preserve the character and appearance of the conservation area .
The lesson
Conservation area status does not mean that development is prohibited. It means that the decision-maker must properly identify what gives the area its significance and assess whether the proposal harms it.
In this case, once the character appraisal was examined carefully and the actual pattern of development along Popes Lane was considered, the council’s refusal could not be sustained.
If you have been refused planning permission for an extension in a conservation area, it is often worth asking whether the council has correctly identified the source of the area’s special character and applied the statutory test properly.
For more information about planning appeals in the borough, see our planning appeals in Ealing page.
