- Decision
- dismissed, 10 September 2026
- Decided by
- Planning Inspector: David Troy
- Authority
- Islington (London)
- Appeal reference
- 6010980
- Application reference
- P2026/0457/FUL
- Procedure
- written representations
- Development
- Flat-roof dormer on rear outrigger roof and enlarged rear window
- Site context
- inside settlement
- Green Belt
- No
- Framework applied
- August 2026 NPPF
- Determinative policies
- DP3
- Development plan policies
- London Plan 2021 D3, D4, Islington Local Plan 2023 PLAN1, Islington Urban Design Guide 2017
- Main issues
- character and appearance
Summary
A flat-roofed dormer on a rear outrigger in an Islington terrace was dismissed for harm to the host building and the terrace (DL ¶9).
What made the difference
Poor fit with the terrace's roofscape. The appellant's energy-efficiency and space benefits were modest (DL ¶13).
Policy findings
Policy codes are those of the National Planning Policy Framework (August 2026) unless a development plan is named.
| Policy | Finding | Weight | Note |
|---|---|---|---|
| DP3 | fail | dormer harms host building and terrace; modest benefits (space, energy efficiency) insufficient (DL 9, 13) |
Key facts
- Parties consulted on the 17 Aug 2026 Framework (DL 2)
Sources
This note is one of the decisions behind the NPPF 2026 Navigator, which shows how each Framework test has been applied across all the decisions in the database. Also available as Markdown.