Postcode record · Hillingdon
UB4 9SZ.
UB4 9SZ has 34 known premises and 31 planning records — 16 approved of 30 decided (53.3%). 26 EPC records.
Postcode UB4 9SZ · boundary not held, centred on the postcodeApprovedRefusedOther31 exact31 on the map — every match
At a glance · this postcodeHillingdon profile →
34
Premises
known addresses (UPRNs)
31
Applications
30 decided
53.3%
Approval rate
16 approved · 14 refused
26
EPC records
ratings C 8 · D 15 · E 2 · F 1
31
Mapped applications
inside the postcode shape
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
UB4 9SZ has 34 known premises and 31 planning records — 16 approved of 30 decided (53.3%). 26 EPC records.
Premises (18 of 34 shown)
Name
Details
UPRN 10022796912
UPRN 100021505342
UPRN 100021505343
UPRN 100021505344
UPRN 100021505345
UPRN 100021505346
UPRN 100021505347
UPRN 100021505348
UPRN 100021505349
UPRN 100021505350
UPRN 10022796912
UPRN 100021505342
UPRN 100021505343
Show all 10 rows
UPRN 100021505344
UPRN 100021505345
UPRN 100021505346
UPRN 100021505347
UPRN 100021505348
UPRN 100021505349
UPRN 100021505350
Planning
What happened?
31 planning applications across the postcode; 16 approved of 30 decided (53.3%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of outbuilding to rear garden.
12 MARSWORTH CLOSE HAYES · premises record
Agent Planning · Officer Rhian Thomas
Planning Application
Approved
2025-09-10
Part retrospective application for the erection of a single storey extension to side and rear
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Planning Application
Approved
2023-10-13
Non-material amendment to planning permission ref. 77767/APP/2023/1355, dated 05-09-2023 (Erection of single storey side/rear extension.) Changes to fenestration of the rear extension element, reduction of roof form from pitched glass to flat roof, and changes to internal layout.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Planning Application
Approved
2023-10-13
Non-material amendment to planning permission ref. 77767/APP/2023/1355 dated 06/09/2023 for the ' Erection of single storey side/rear extension. ' To make changes to fenestrations within rear extension, change roof pitch from pitched glass to flat roof and rooflights and change internal layout.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Planning Application
Refused
2023-09-25
Erection of single storey side/rear extension.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Planning Application
Approved
2023-05-10
Demolition of existing conservatory to erect a single storey rear extension
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Zara Raza
Planning Application
Approved
2021-11-05
Demolition of conservatory and erection of single storey side and rear extension.
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Hardev Gill
Planning Application
Refused
2021-08-14
Conversion of roofspace to habitable use to include a rear dormer and 2 front rooflights
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Haydon Richardson
Planning Application
Approved
2021-07-15
Conversion of roofspace to habitable use to include a rear dormer and 2 front rooflights
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Nurgul Kinli
Planning Application
Refused
2021-04-20
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights (Application for a Certificate of Lawful Development for a Proposed Development)
11 MARSWORTH CLOSE HAYES · premises record
Agent mr safa alattar · Officer Nurgul Kinli
Planning Application
Refused
2021-02-28
Erection of outbuilding to rear garden.
12 MARSWORTH CLOSE HAYES · premises record
Agent Planning · Officer Rhian Thomas
Approved
2025-09-10
More
Planning Application
Part retrospective application for the erection of a single storey extension to side and rear
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Approved
2023-10-13
More
Planning Application
Non-material amendment to planning permission ref. 77767/APP/2023/1355, dated 05-09-2023 (Erection of single storey side/rear extension.) Changes to fenestration of the rear extension element, reduction of roof form from pitched glass to flat roof, and changes to internal layout.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Approved
2023-10-13
More
Planning Application
Show all 10 rows
Non-material amendment to planning permission ref. 77767/APP/2023/1355 dated 06/09/2023 for the ' Erection of single storey side/rear extension. ' To make changes to fenestrations within rear extension, change roof pitch from pitched glass to flat roof and rooflights and change internal layout.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Refused
2023-09-25
More
Planning Application
Erection of single storey side/rear extension.
12 MARSWORTH CLOSE HAYES · premises record
Agent EnGage Reliance Ltd · Officer Nicola Taplin
Approved
2023-05-10
More
Planning Application
Demolition of existing conservatory to erect a single storey rear extension
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Zara Raza
Approved
2021-11-05
More
Planning Application
Demolition of conservatory and erection of single storey side and rear extension.
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Hardev Gill
Refused
2021-08-14
More
Planning Application
Conversion of roofspace to habitable use to include a rear dormer and 2 front rooflights
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Haydon Richardson
Approved
2021-07-15
More
Planning Application
Conversion of roofspace to habitable use to include a rear dormer and 2 front rooflights
11 MARSWORTH CLOSE HAYES · premises record
Agent Mr safa alattar · Officer Nurgul Kinli
Refused
2021-04-20
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights (Application for a Certificate of Lawful Development for a Proposed Development)
11 MARSWORTH CLOSE HAYES · premises record
Agent mr safa alattar · Officer Nurgul Kinli
Refused
2021-02-28
More
Planning Application
Building control
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 34 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 34 of 34 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 34 of 34 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).
People
Who is involved?
Named on the latest 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Agent on 5 applications
Agent on 4 applications
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 11 applications
Case officer on 2 applications
Agent on 5 applications
Agent on 4 applications
Agent on 1 application
Show all 10 rows
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 11 applications
Case officer on 2 applications
Development
What could it become?
Planning precedent31 applications and 31 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy26 EPC records; ratings C: 8, D: 15, E: 2, F: 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 ProOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Thinking about a project here?
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.