City of London Corporation

Adopted Documents We Assess Against

Development plan: City of London Local Plan 2015

Documents are re-checked against the council's own website weekly. A detected change flags "Policy Update Available" for human review — live assessment standards are never replaced automatically.

Authored Policy Library

3 local policy checks, each citation-locked to the adopted document. National policy (NPPF, national space and daylight standards) applies alongside these.

City of London Local Plan 2015

• City of London Local Plan 2015 (design policies) — Design character (provisional citation) The City applies a very high design bar, and almost every site sits in a conservation area or a listed building's setting. Expect townscape and heritage to drive the assessment rather than extension size limits.
• City of London Local Plan 2015 (amenity policies) — Amenity neighbouring (provisional citation) The City looks closely at daylight and sunlight because buildings sit so close together. If any residential window is affected, expect a daylight assessment to be asked for.
• City of London Local Plan 2015, read 2026-08-05 — Rear extension depth The City publishes no dimensions for householder work at all. What decides your case is daylight to neighbours, heritage and design. And because nearly all City homes are flats, jobs that would need no permission on a house usually do need it here.