Coverage Lambeth

Loft conversion planning permission in Lambeth: what actually gets approved

Decided by Lambeth between September 2026 and October 2026. Every figure here is a count of decisions on the council's own register — not a prediction about yours.

Loft conversions and dormers decided by Lambeth

66%

of 41 decisions approved

Counting decisions that went one way or the other.

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66% of the 41 loft conversions and dormers Lambeth decided between September 2026 and October 2026 were approved; half were decided within 64 days. Plan Forecast, 4 November 2026.

Time to decide: half were decided within 64 days, counted from the day the application was valid (or received, where the register gives no valid date) over the 41 decisions with both dates.

Recent decisions

Real decisions, newest first. Addresses are reduced to the street here; the council publishes them in full on its own register.

Dorchester Drive London

Refused

Erection of a part hip-to-gable roof extension and a rear dormer roof extension incorporating a stepped ridge, together with the installation of rooflights, an obscure-glazed window to the side elevation and solar panels above the rear dormer. dormer.

Decided 29 October 2026 26/02234/FUL

Knight's Hill London

Refused

Formation of a roof terrace above the existing rear outrigger roof with obscured glazed balustrade, replacement of part of the existing rear dormer window with a door, insertion of stepped access within the roof slope, and associated glazed link and balustrade.

Decided 27 October 2026 26/02504/FUL

Clapham Common South Side London

Approved

The installation of 2 no. AC condenser units to rear flat roof enclosed within acoustic enclosures and new extraction system, and replacement roof covering and a rooflight and the removal of a hatch.

Decided 21 October 2026 26/00969/FUL

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Other work in Lambeth

Questions people ask

What percentage of loft conversions and dormers does Lambeth approve?

66% were approved, over 41 decisions that went one way or the other. Lambeth's figure across all types of work is drawn from 246 decisions.

How many loft conversions and dormers has Lambeth decided?

41 that went one way or the other, from September 2026 to October 2026.

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