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26/1573/CPApproveLast updated 02/08/2026, 07:49

An application has been made for a certificate of lawful development regarding the construction of a rear roof dormer and a loft conversion.

These works will create additional habitable space without raising the existing ridge height.

Lawful use (operation)
Holburne Road, London SE3

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Full Proposal

Certificate of Lawfulness (Proposed) is sought for construction of a rear roof dormer extension and associated loft conversion works on the existing dwelling house. The proposed development consists of the construction of a rear roof dormer extension and associated loft conversion works on the existing dwelling house. Works include: Construction of a full-width flat roof rear dormer extension within the rear roof slope. Formation of new habitable accommodation within the roof space. Installation of rooflights within the dormer roof. Alterations to the existing roof structure as required. Installation of new windows and doors associated with the dormer. Thermal insulation, internal partitions, and associated internal works. Construction of a new staircase connecting the existing first floor to the loft level. The proposed rear dormer measures approximately: Width: 6.84 m Depth: 2.80 m Height: 2.40 m No increase to the existing ridge height is proposed. No new access arrangements, parking areas, hard standings, boundary treatments, or external drainage alterations are proposed as part of this application. The precise siting, dimensions and appearance of the proposed works are indicated on the accompanying drawings and plans

Application Timeline

Application Registered25/05/2026
Application Validated04/06/2026
Decision Made29/07/2026
Decision Issued29/07/2026
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For neighbours

Physical construction works
Build-phase noise, dust and vehicles while works are carried out.
Access or parking changes
The description mentions access, parking or similar.
Upper-floor or window works
First-floor, dormer, balcony or window works in the description.

What the application involves, identified from its description — an indicator, not an assessment. Set your address to see distance and direction.

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