Development Intent
Planning AtlasLambethWest DulwichApplication
Planning Application

25/03944/FUL

170 Rosendale Road London Lambeth SE21 8LG

Full / Other PlanningWest Dulwich wardConservation Area: CA47 : Rosendale Road Conservation Area
Submission
18 Dec 2025
Target
18 Mar 2026
Decision
27 Apr 2026
Outcome
Refused
Delegated decisionRefused
27 Apr 2026
Decided by Nadia Harper under delegated powers
Loading map…
Scheme description

Erection of a ground floor rear extension to the existing garage, together with an extension on top of the existing garage to create a two bed unit.

Why it was refused
Reason 1

In the absence of sufficient evidence to demonstrate that the proposal would be ancillary to the main dwelling, the proposal has been assessed as a self-contained dwelling. The proposed unit would fail to provide an acceptable standard of accommodation by reason of insufficient internal floor area, inadequate floor to ceiling height, and a lack of adequate storage and amenity space. As such, the development would not meet the requirements of Policy D6 (Housing quality and standards) of the London Plan (2021), the Nationally Described Space Standards, nor Policy H5 (Housing standards) of the Lambeth Local Plan (2021) and would result in substandard living conditions for future occupiers. Lambeth Planning Telephone 020 7926 1180 PO Box 80771 www.lambeth.gov.uk London planning@lambeth.gov.uk SW2 9QQ REFULZ

Reason 2

The proposal, by reason of its scale and massing, and roof design, would result in a visually intrusive form of development, resulting in harm to the character and appearance of the host dwelling, contrary to Policies Q5 and Q11 of the Lambeth Local Plan (2021). Furthermore, the proposal would fail to appear subordinate to the host building, or to respect the scale and proportions of the host building, resulting in a low level of less than substantial harm to the wider conservation area, contrary to Policy Q22 of the Lambeth Local Plan (2021). Insufficient public benefit exists to outweigh this harm, contrary to paragraph 215 of the NPPF (2024)

Reason 3

In the absence of a Section 106 Agreement to secure the development as car-permit free, provision of a car club membership and cycle hire membership, the transport impacts of the development would not be fully addressed, and it would fail to promote less private car ownership and sustainable travel. The application is therefore contrary to Policies T1, T3 and T6 of the Lambeth Local Plan (2021).

Policies cited
Q5
Q11
Q22
NPPF
T1
T3
T6
Parties
Applicant
John Sun
Timeline
18 Dec 2025
Application submitted
21 Jan 2026
Application validated
27 Apr 2026
Delegated decision: Refused
Supporting documents · 8
Decision Notice27 Apr 2026View ↗
OFFICER REPORT24 Apr 2026View ↗
Site Notice22 Apr 2026View ↗
+ HERITAGE STATEMENT22 Jan 2026View ↗
PROPOSED DRAWINGS22 Jan 2026View ↗
FIRE SAFETY STATEMENT22 Dec 2025View ↗
EXISTING DRAWINGS22 Dec 2025View ↗
OS Map22 Dec 2025View ↗
View Application Page ↗
Data from the Lambeth planning register.
Summary
Reference
25/03944/FUL
Type
Full Planning Permission
Applicant
John Sun
Submitted
18 Dec 2025
Decision date
27 Apr 2026
Council
Decision
Refused
Decision route
Delegated (officer)
How long, really
19
wks · this application
Submission → decision · 11 wks over the 8-week target
Public response
Objections
0
In support
0
Total comments
0