Postcode record · Harrow
HA5 4QJ.
HA5 4QJ has 23 known premises and 45 planning records — 24 approved of 35 decided (68.6%). 14 EPC records.
Postcode HA5 4QJ · boundary not held, centred on the postcodeApprovedRefusedOther45 on the map — every match
At a glance · this postcodeHarrow profile →
23
Premises
known addresses (UPRNs)
45
Applications
35 decided
68.6%
Approval rate
24 approved · 11 refused
56 days
Median decision time
average 73 days · 38 dated decisions
14
EPC records
ratings C 2 · D 6 · E 5 · F 1
45
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?
HA5 4QJ has 23 known premises and 45 planning records — 24 approved of 35 decided (68.6%). 14 EPC records.
Premises (18 of 23 shown)
Name
Details
UPRN 100021300288
UPRN 100021300290
UPRN 100021300292
UPRN 100021300294
UPRN 100021300295
UPRN 100021300297
UPRN 100021300299
UPRN 100021300301
UPRN 100021300303
UPRN 100021300305
UPRN 100021300288
UPRN 100021300290
UPRN 100021300292
Show all 10 rows
UPRN 100021300294
UPRN 100021300295
UPRN 100021300297
UPRN 100021300299
UPRN 100021300301
UPRN 100021300303
UPRN 100021300305
Planning
What happened?
45 planning applications across the postcode; 24 approved of 35 decided (68.6%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Non-Material amendment to planning permission PL/3120/25 dated 27.1.2026 to change condition 4 (windows in flank wall elevations) for the addition of two obscure-glazed white uPVC casement windows - one to each first-floor flank elevation
30 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Agnes Wanja
Non-Material Amendment
Refused
2026-03-02
Single storey rear extension; alterations to roof to form gable ends; two dormers to each front and rear roofslopes
30 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Agnes Wanja
Householder
Approved
2025-12-02
Single storey side to rear extension; first floor side extension; relocation of main entrance to front elevation; alteration and extension to roof; two front dormers; rear dormer; external alterations (Demolition of conservatory and detached garage)
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ryan Gallagher
Householder
Approved
2024-06-21
Single storey side to rear extension; first floor side extension; alterations and extension to roof; rear dormer; two rooflights and two velux cabrio balcony windows to front roof slope (Demolition of detached garage)
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ryan Gallagher
Householder
Approved
2024-03-14
Single storey side to rear extension; single storey rear extension; first floor side extension; alterations and extension to roof; two rooflights and two velux cabrio balcony windows to front roof slope
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ben Greene
Householder
Approved
2023-11-03
Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 2.54 metres high to the eaves
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ben Greene
Prior Notification - Larger Home Extension
Not required
2023-10-11
Single storey rear extension
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Catriona Cooke
Householder
Approved
2020-11-16
Householder
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Historical Officer
Householder
Withdrawn
2020-11-13
Single Storey Rear Extension: 5.16 metres deep, 2.63 metres maximum height, 2.43 metres high to the eaves
18 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer AE Aadil Essa
Prior Notification - Larger Home Extension
Approved
2020-03-17
Single storey side extension
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Catriona Cooke
Householder
Approved
2020-03-13
Non-Material amendment to planning permission PL/3120/25 dated 27.1.2026 to change condition 4 (windows in flank wall elevations) for the addition of two obscure-glazed white uPVC casement windows - one to each first-floor flank elevation
30 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Agnes Wanja
Refused
2026-03-02
More
Non-Material Amendment
Single storey rear extension; alterations to roof to form gable ends; two dormers to each front and rear roofslopes
30 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Agnes Wanja
Approved
2025-12-02
More
Householder
Single storey side to rear extension; first floor side extension; relocation of main entrance to front elevation; alteration and extension to roof; two front dormers; rear dormer; external alterations (Demolition of conservatory and detached garage)
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ryan Gallagher
Approved
2024-06-21
More
Householder
Show all 10 rows
Single storey side to rear extension; first floor side extension; alterations and extension to roof; rear dormer; two rooflights and two velux cabrio balcony windows to front roof slope (Demolition of detached garage)
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ryan Gallagher
Approved
2024-03-14
More
Householder
Single storey side to rear extension; single storey rear extension; first floor side extension; alterations and extension to roof; two rooflights and two velux cabrio balcony windows to front roof slope
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ben Greene
Approved
2023-11-03
More
Householder
Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 2.54 metres high to the eaves
42 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Ben Greene
Not required
2023-10-11
More
Prior Notification - Larger Home Extension
Single storey rear extension
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Catriona Cooke
Approved
2020-11-16
More
Householder
Householder
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Historical Officer
Withdrawn
2020-11-13
More
Householder
Single Storey Rear Extension: 5.16 metres deep, 2.63 metres maximum height, 2.43 metres high to the eaves
18 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer AE Aadil Essa
Approved
2020-03-17
More
Prior Notification - Larger Home Extension
Single storey side extension
22 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ · premises record
Officer Catriona Cooke
Approved
2020-03-13
More
Householder
Building control
Building-control records are not yet collected for Harrow — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
No mapped designation intersects a premises point in this postcode in the current build. Open any premises above for its own designation record.
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
Case officer on 5 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 5 applications
Case officer on 2 applications
Case officer on 2 applications
Show all 10 rows
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Development
What could it become?
Planning precedent45 applications and 45 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy14 EPC records; ratings C: 2, D: 6, E: 5, 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.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.