Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
Application overview
Proposed loft dormer conversion, internal alterations, floor plan redesign and all associated works at 12 Rosslyn Avenue, SW13 0JX
Proposal details
- Reference
- PA26/2172
- Alternative references
- PP-15003779
- Ward
- Mortlake & Barnes Common Ward [MRB]
- Agent
- Macann
- UPRN
- 100022298187
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Sign in to view collected detailsDocuments 7 of 7
| Document | Published | Action |
|---|---|---|
| Application Form - Without Personal DataApplication Form - Redacted | 19 Jun 2026 | View |
| Location planSubmitted Drawing | 19 Jun 2026 | View |
| Block Plans=B371279-02-3000Submitted Drawing | 19 Jun 2026 | View |
| CIL FORMApplication Form | 19 Jun 2026 | View |
| Existing Drawings=B371279-02-1100Submitted Drawing | 22 Jun 2026 | View |
| Proposed Drawings=B371279-02-3100Submitted Drawing | 22 Jun 2026 | View |
| DecisionDecision Notice | 26 Jun 2026 | View |
Documents open on the council website. Browse council documents if a link has changed.
Application timeline
Council milestones and published deadlines. A deadline passing does not confirm a decision.
Decision due date
Past published deadlineA published target or deadline. It does not confirm an outcome.
Council sourceDecision expiry date
Published deadlineA published target or deadline. It does not confirm an outcome.
Council source
Decision & conditions
DecisionPlanning conditions
- This proposal CONSTITUTES DEVELOPMENT within the meaning of Section 55 of the Town and Country Planning Act 1990, but by virtue of Article 3 and Schedule 2 of the Town and Country (General Permitted Development) (England) Order 2015 and any subsequent legislative amendments is of a class which is described as PERMITTED DEVELOPMENT and therefore planning permission IS NOT REQUIRED subject to the following conditions: (a) the materials used in any exterior work shall be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse; (b) the enlargement must be constructed so that: (i) other than in the case of a hip-to-gable enlargement or an enlargement which joins the original roof to the roof of a rear or side extension: (aa) the eaves of the original roof are maintained or reinstated; and (bb) the edge of the enlargement closest to the eaves of the original roof is, so far as practicable, not less than 0.2 metres from the eaves, measured along the roof slope from the outside edge of the eaves; and (ii) other than in the case of an enlargement which joins the original roof to the roof of a rear or side extension, no part of the enlargement extends beyond the outside face of any external wall of the original dwellinghouse; and (c) any window inserted on a wall or roof slope forming a side elevation of the dwellinghouse shall be: (i) obscure-glazed, and (ii) non-opening unless the parts of the window which can be opened are more than 1.7 metres above the floor of the room in which the window is installed.
- This proposal CONSTITUTES DEVELOPMENT within the meaning of Section 55 of the Town and Country Planning Act 1990, but by virtue of Article 3 and Schedule 2 of the Town and Country (General Permitted Development) (England) Order 2015 and any subsequent legislative amendments is of a class which is described as PERMITTED DEVELOPMENT and therefore planning permission IS NOT REQUIRED subject to the following condition: (a) that any window located on a roof slope forming a side elevation of the dwellinghouse shall be: (i) obscure-glazed; and (ii) non-opening unless the parts of the window which can be opened are more than 1.7 metres above the floor of the room in which the window is installed.
- If you alter your proposals in any way, including in order to comply with the requirements of the Building Regulations, planning permission may be required. The proposal approved by this decision may not be implementable without express planning permission if other external work has taken place under another Certificate of Lawful Development or planning permission granted before or after this decision. If you wish to deviate in any way from the proposals shown on the above drawings you should contact the Development Management Section, Civic Centre, 44 York Street, Twickenham, TW1 3BZ. For the avoidance of doubt the drawing numbers to which this decision refers are as follows: Existing Drawings=B371279-02-1100 Submitted Drawing received by the Local Planning Authority on 22 Jun 2026 Proposed Drawings=B371279-02-3100 Submitted Drawing received by the Local Planning Authority on 22 Jun 2026 Location plan Submitted Drawing received by the Local Planning Authority on 19 Jun 2026 Block Plans=B371279-02-3000 Submitted Drawing received by the Local Planning Authority on 19 Jun 2026
