Postcode record · Hillingdon
HA4 6SY.
HA4 6SY has 26 known premises and 21 planning records — 14 approved of 20 decided (70%). 15 EPC records.
Postcode HA4 6SY · boundary not held, centred on the postcodeApprovedRefusedOther21 exact21 on the map — every match
At a glance · this postcodeHillingdon profile →
26
Premises
known addresses (UPRNs)
21
Applications
20 decided
70%
Approval rate
14 approved · 6 refused
15
EPC records
ratings C 2 · D 7 · E 6
21
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?
HA4 6SY has 26 known premises and 21 planning records — 14 approved of 20 decided (70%). 15 EPC records.
Premises (18 of 26 shown)
Name
Details
UPRN 10022805017
UPRN 100021463991
UPRN 100021463993
UPRN 100021463995
UPRN 100021463997
UPRN 100021463999
UPRN 100021464001
UPRN 100021464003
UPRN 100021464005
UPRN 100021464007
UPRN 10022805017
UPRN 100021463991
UPRN 100021463993
Show all 10 rows
UPRN 100021463995
UPRN 100021463997
UPRN 100021463999
UPRN 100021464001
UPRN 100021464003
UPRN 100021464005
UPRN 100021464007
Planning
What happened?
21 planning applications across the postcode; 14 approved of 20 decided (70%). Latest 21 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of wraparound single storey side and rear extension, and front porch
7 MAHLON AVENUE RUISLIP · premises record
Agent Mr Kaleem Janjua Rivendell · Officer Sharon Singh
Planning Application
Approved
2025-11-03
Partial demolition and conversion of bungalow into two 3-bed, two-storey semi-detached dwelling houses including erection of an additional storey with gable end roof, habitable accommodation within the roof space, rear dormer and roof lights. Erection of part single, part double storey rear, side an
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed First Floor · Officer Emilie Bateman
Planning Application
Other
2024-06-24
Erection of a 2 storey detached dwelling house, incorporating a rear dormer and rooflights at the front, together with associated landscaping, car parking, cycle and refuse storage, involving demolition of the existing bungalow (revision to planning permission ref. 5679/APP/2021/2537 dated 24-12-202
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed · Officer Christos Chrysanthou
Planning Application
Approved
2022-09-07
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 2 front roof lights and conversion of roof from hip to gable end with new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
23 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Analese Haynes
Planning Application
Approved
2022-01-12
Erection of a 2 storey detached dwelling house, incorporating a rear dormer, and rooflights at the front, together with associated landscaping, car parking, cycle and refuse storage, involving demolition of the existing bungalow.
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed · Officer Nesha Burnham
Planning Application
Approved
2021-06-24
Raising of roof ridge to create additional habitable floorspace to include an enlarged side dormer and partial gable end
11 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Liz Arnold
Planning Application
Approved
2020-11-24
Addition of a first floor and conversion of roof space to habitable use to include a rear dormer and 2 front rooflights
11 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Cris Lancaster
Planning Application
Refused
2020-08-10
Partial raising of the roof and conversion of roof space to provide two additional bedrooms
13 MAHLON AVENUE RUISLIP HA4 6SY · premises record
Agent Mr Brian Murray · Officer Christopher Brady
Planning Application
Approved
2019-06-14
Single storey rear extension and conversion of roof space to habitable use to include a rear dormer, 3 front rooflights and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
49 MAHLON AVENUE RUISLIP · premises record
Agent Elaine Kimber Suite · Officer Hoda Sadri
Planning Application
Approved
2019-03-26
Addition of first floor to include a side dormer
13 MAHLON AVENUE RUISLIP HA4 6SY · premises record
Agent Mr Brian Murray · Officer Hoda Sadri
Planning Application
Refused
2019-02-07
Erection of wraparound single storey side and rear extension, and front porch
7 MAHLON AVENUE RUISLIP · premises record
Agent Mr Kaleem Janjua Rivendell · Officer Sharon Singh
Approved
2025-11-03
More
Planning Application
Partial demolition and conversion of bungalow into two 3-bed, two-storey semi-detached dwelling houses including erection of an additional storey with gable end roof, habitable accommodation within the roof space, rear dormer and roof lights. Erection of part single, part double storey rear, side an
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed First Floor · Officer Emilie Bateman
Other
2024-06-24
More
Planning Application
Erection of a 2 storey detached dwelling house, incorporating a rear dormer and rooflights at the front, together with associated landscaping, car parking, cycle and refuse storage, involving demolition of the existing bungalow (revision to planning permission ref. 5679/APP/2021/2537 dated 24-12-202
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed · Officer Christos Chrysanthou
Approved
2022-09-07
More
Planning Application
Show all 10 rows
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 2 front roof lights and conversion of roof from hip to gable end with new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
23 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Analese Haynes
Approved
2022-01-12
More
Planning Application
Erection of a 2 storey detached dwelling house, incorporating a rear dormer, and rooflights at the front, together with associated landscaping, car parking, cycle and refuse storage, involving demolition of the existing bungalow.
27 MAHLON AVENUE RUISLIP · premises record
Agent Mr M Ahmed · Officer Nesha Burnham
Approved
2021-06-24
More
Planning Application
Raising of roof ridge to create additional habitable floorspace to include an enlarged side dormer and partial gable end
11 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Liz Arnold
Approved
2020-11-24
More
Planning Application
Addition of a first floor and conversion of roof space to habitable use to include a rear dormer and 2 front rooflights
11 MAHLON AVENUE RUISLIP · premises record
Agent Mr Syed Naqvi · Officer Cris Lancaster
Refused
2020-08-10
More
Planning Application
Partial raising of the roof and conversion of roof space to provide two additional bedrooms
13 MAHLON AVENUE RUISLIP HA4 6SY · premises record
Agent Mr Brian Murray · Officer Christopher Brady
Approved
2019-06-14
More
Planning Application
Single storey rear extension and conversion of roof space to habitable use to include a rear dormer, 3 front rooflights and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
49 MAHLON AVENUE RUISLIP · premises record
Agent Elaine Kimber Suite · Officer Hoda Sadri
Approved
2019-03-26
More
Planning Application
Addition of first floor to include a side dormer
13 MAHLON AVENUE RUISLIP HA4 6SY · premises record
Agent Mr Brian Murray · Officer Hoda Sadri
Refused
2019-02-07
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 26 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 26 of 26 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 26 of 26 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 21 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Agent on 3 applications
Agent on 3 applications
Agent on 2 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
Agent on 1 application
Agent on 3 applications
Agent on 3 applications
Agent on 2 applications
Show all 10 rows
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Development
What could it become?
Planning precedent21 applications and 21 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy15 EPC records; ratings C: 2, D: 7, E: 6.
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.