Case study · Bexley

Basement extension under garden in Sidcup

Approved with conditions by Bexley Council in 22 weeks. Fixed fee £4,500.

Project summary

Service
Basement extension under garden
Location
Sidcup, Bexley
Property stock
1930s semi-detached, Edwardian villas
Article 4 in borough
No
Process duration
22 weeks
Outcome
Approved with conditions
The brief

What the client needed

A family in Sidcup approached us for basement extension under garden on a 1930s semi-detached property. Constraints: respecting streetscape rhythm typical of Bexley, maintaining rear garden depth, and meeting Bexley Council's design expectations for the conservation context (16 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 Bexley 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 Bexley Council via the Planning Portal. Permitted Development eligibility confirmed via parallel LDC. Officer comments minor, addressed in 5 days. Approved with conditions.

Decision recorded Bexley Council, statutory determination period.

Similar project in Sidcup?

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

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