Porch to front and conversion of roof space to habitable use to include a rear dormer and 3 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)
Conversion of roof space to habitable use to include 2 x side dormers. (Application for a Certificate of Lawful Development for a Proposed Development)
Porch to front and conversion of roof space to habitable use to include a rear dormer and 3 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)
Conversion of roof space to habitable use to include 2 x side dormers. (Application for a Certificate of Lawful Development for a Proposed Development)
Building-control records are not yet collected for Hillingdon — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 8 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 8 of 8 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 8 of 8 premises. Some normally permitted changes may require planning permission.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
Planning precedent8 applications and 8 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy4 EPC records; ratings D: 4.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals
Planning Atlas Pro
Ownership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
No intent signal is currently recorded in this postcode.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.
HA4 9TP, Hillingdon: planning and property history | Planning Atlas