Case study · Southwark

Mansard roof extension in Nunhead

Approved in conservation area by Southwark Council in 16 weeks. Fixed fee £1,575.

Project summary

Service
Mansard roof extension
Location
Nunhead, Southwark
Property stock
Victorian terraces
Article 4 in borough
Yes
Process duration
16 weeks
Outcome
Approved in conservation area
The brief

What the client needed

A family in Nunhead approached us for mansard roof extension on a victorian terraces property. Constraints: respecting streetscape rhythm typical of Southwark, maintaining rear garden depth, and meeting Southwark Council's design expectations for the conservation context (43 conservation areas borough-wide).

Design response

How we designed it

Measured survey week 1. Three design iterations balancing internal layout against external massing visible from neighbours. Two scheme massings tested against Southwark Council's adopted design guidance. Chosen scheme matched existing roof pitch, used matching brick, set the new opening back from the eaves.

Planning route

Submission and decision

Submitted to Southwark Council via the Planning Portal. With Article 4 in force in Southwark, we confirmed our scheme retained the necessary permissions before submission. Officer comments minor, addressed in 5 days. Approved in conservation area.

Decision recorded Southwark Council, statutory determination period.

Similar project in Nunhead?

Same fixed fee. Same MCIAT team. Same approval discipline.

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