Conversion of roof space to habitable use to include a rear dormer with Juliet balcony, 1 front roof light and erection of single storey extension to rear (Application for a Certificate of Lawful Development for a Proposed Development)
Change of Use from single family dwelling (Use Class C3) to a 5 bedroom house in multiple occupation (Use Class C4) (Application for a Certificate of Lawful Development for a Proposed Development)
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6 metres, for which the maximum height would be 3.3 metres, and for which the height of the eaves would be 2.25 metres
Conversion of roof space to habitable use to include a rear dormer with Juliet balcony, 1 front roof light and erection of single storey extension to rear (Application for a Certificate of Lawful Development for a Proposed Development)
Change of Use from single family dwelling (Use Class C3) to a 5 bedroom house in multiple occupation (Use Class C4) (Application for a Certificate of Lawful Development for a Proposed Development)
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6 metres, for which the maximum height would be 3.3 metres, and for which the height of the eaves would be 2.25 metres
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 9 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 9 of 9 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 9 of 9 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 precedent17 applications and 17 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy6 EPC records; ratings D: 5, E: 1.
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 7LU, Hillingdon: planning and property history | Planning Atlas