Planning application
15 Thornton Road London Lambeth SW12 0JX
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Application for a Certificate of Lawful Development (Proposed) with respect to the erection of a rear roof extension, incorporating a juliet balcony with the addition of three roof lights to the front roof slope and a side obscured window.
As published by the council, reference 26/01067/LDCP
Application record
- Reference
- 26/01067/LDCP
- Type
- Certificate of Lawful Use proposed
- Status
- Decided
- Decision
- Granted As published: Grant Permission
- Received
- 2 Apr 2026
- Validated
- 2 Apr 2026
- Decided
- 21 May 2026
- Ward
- Streatham Hill West & Thornton
- Decision by
- Delegated Decision
- Postcode
- SW12 0JX
Timeline
Dates from the published record
-
2 Apr 2026
Received by Lambeth
-
21 May 2026
Decision issued: Grant Permission
-
25 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
16 documents on file for this application
- OFFICER'S REPORT
- REDACTED
- PROPOSED GROUND FLOOR PLAN
- PROPOSED ROOF TOP PLAN
- EXISTING GROUND FLOOR PLAN
- EXISTING LOFT FLOOR PLAN
- EXISTING SECTION AND ELEVATIONS
- PROPOSED FIRST FLOOR PLAN
- PROPOSED SECTION AND ELEVATIONS
- COMMUNITY INFRASTRUCTURE LEVY - COMPLETED FORM
- EXISTING/PROPOSED SITE BLOCK PLANS
- HOUSEHOLDER AND OTHER MINOR EXTENSIONS IN FLOOR ZONES
- EXISTING ROOF PLAN
- EXISTING FIRST FLOOR PLAN
- PROPOSED LOFT FLOOR PLAN
- THE LOCATION PLAN
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Lambeth granted permission on 21 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
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Land adjacent To 2 Queensville Road London SW12 0JJ
Approval of details pursuant to conditions 6 (Noise Impact Assessment and air source heat pump), 9 (photovoltaic array), 10 (water efficiency), 11 (as built SAP calculations) and 12 (hard and soft landscaping strategy) of planning permission ref: 24/00047/VOC (Variation of condition 2 (The position of the approved dwelling) of planning permission ref: 22/01228/FUL (Demolition of the existing garages and erection of a single storey dwellinghouse, along with associated cycle storage, refuse storage, landscaping and boundary treatment.) Granted on 16.06.2023) granted on 22.05.2024.
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To remove 1 x Oak tree (T1) to rear of the property. Reason: the tree has been implicated in causing structural movement to an adjacent property (15 Queensville Road, SW12 0JL).
Granted Trees 8 docs -
47 Thornton Road London Lambeth SW12 0JX
84% historically approved · decision due ~15 Jun
Application for a Certificate of Lawful Certificate (Proposed) for the erection of a rear dormer roof extension and installation of two Rooflights on the Front Roof.
Decided Lawful development Extension Loft or dormer 14 docs -
49 Thornton Road London SW12 0JX
84% historically approved · decision due ~5 Mar
Application for Certificate of Lawfulness (Proposed) with respect to the erection of a rear dormer roof extension and installation of two front rooflights.
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Erection of a single storey ground floor rear extension and the blocking up of existing windows on the side elevation (Retrospective).
Granted Full applications Extension Windows or glazing 12 docsSmall domestic -
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DeDemolition of existing garage and erection of new 2 storey side and rear extension.
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Other lawful development applications
In Lambeth
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26/02558/LDCE Awaiting decision
18 Narbonne Avenue London SW4 9JS
Certificate of Lawful Development (existing) for the change of use of property from 2 dwellings to a single dwelling (Use Class C3).
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26/02557/LDCP Awaiting decision
47 Clive Road London SE21 8DA
Certificate of Lawful Development (Proposed) with respect to erection of rear dormer roof extension; dormer roof extension over existing rear outrigger and installation of 3 x rooflights to the front roof slope.
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26/02383/LDCP Awaiting decision
19 Ivymount Road London SE27 0NB
Certificate of Lawful Development (Proposed) with respect to provision of a vehicular crossover and dropped kerb to the front of the property together with associated alterations to the boundary treatment.
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26/01071/LDCP Withdrawn
36 Elms Road London Lambeth SW4 9EX
Certificate of Lawful Development (Proposed) with respect to the erection of side and rear 'box' roof extensions including a side roof light and removal of a chimney.
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26/02337/LDCP Awaiting decision
34 Acland Crescent London SE5 8EQ
Certificate of Lawful Development (Proposed) with respect to erection of a hip to gable roof extension together with the erection of a rear dormer with juliet balcony and installation of 2x rooflights to the front roofslope.