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Chic first-floor extension in a strict conservation area

Location

Catherine Grove SE10

Local Authority

Greenwich Council

Plot Type

Conservation Area

Project Type

Extension

Accomplishment

First-floor extension

Services by Urbanist Architecture

Project Architect, Planning Consultant

Challenge

As the saying goes, small is beautiful. We’re not sure how often that idea is truly embraced in architecture, though. It can be easy to impress people with big projects, and even to hear architects dismissively referring to something they are working on as ‘just an extension.” Which is, of course, entirely the wrong attitude. Not only should every project be treated with the same care and seriousness, as a test of an architect’s skill, it’s hard to beat a small and sensitive extension in a constrained site.

Our client had a lovely Victorian house in a beautiful part of London. Like a lot of similar properties, the positives bring with them a limitation: it’s in a strict conservation area and that restricts the chances of making a home any bigger. As this house had only one bathroom and that was two floors down from the main bedroom, that wasn’t ideal. Still, our client felt a small addition might be possible, so went looking for architectural practice with experience of getting planning permission in Greenwich conservation areas, and found us.

Before & After

Solution

As a rule, in conservation areas, the most you can expect is a single-storey extension. However, there can be an exception to this when – as is quite common in some parts of London – the house has a lower-ground floor and so an extension on top of the existing extension would be on the same floor as the main entrance.

Even so, the new extension needed to feel subtle and in keeping with the area. To help it blend in better, we decided to reclad the lower-ground-floor extension to match what we were proposing above it. Pre-application advice from the council steered us to a final choice of a zinc shell with timber slats providing privacy for the bathroom window. A new green roof on top of the original extension reinforces the idea that it is part of the garden, and connects the lower ground and ground floor extensions

In terms of square metres added, this is unquestionably very modest. In terms of improving the livability of the house, on the other hand, the impact is significant - the addition of a new, light-filled bathroom. And that was done without any sense that a historic building was being made any less beautiful.

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