4 Lyncroft Avenue, Pinner, Harrow, HA5 1JX Data via plota.co.uk

PL/1674/26 - Prior Notification - Larger Home Extension Approved
Extensions & alterations

Proposal

Single storey rear extension: 4.00 metres deep, 3.20 metres maximum height and 3.00 metres high to the eaves Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
18 Jun 2026
✓
Approved
24 Jul 2026

Approved on 24 Jul 2026 · Delegated decision · Last checked 30 Sept 2026

Documents 7

Statements & assessments 1

PDF Fire Safety Statement Supporting Info (Redacted) · 19 Jun 2026 View ↗

Plans & drawings 3

PDF The Location Plan Supporting Info (Redacted) · 19 Jun 2026 View ↗ PDF Block Plan Plans · 19 Jun 2026 View ↗ PDF Existing and Proposed Plans Plans · 19 Jun 2026 View ↗

Application forms 1

PDF Application Form Application Form (Redacted) · 19 Jun 2026 View ↗

Other documents 2

PDF DN - PRICOM and PRIEXT PA NREQ DN - PRICOM and PRIEXT PA NREQ · 24 Jul 2026 View ↗ PDF Site Photos Supporting Info (Redacted) · 19 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 7

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Air quality management area: Harrow AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
1 listed building within 150 m of the postcode pin; Flood defence about 32 m from the postcode pin (natural high ground, designed for a 1 in 5 year flood); Inside the Harrow built-up area; Public transport access: PTAL 3 (moderate), TfL 2023, for the 100 m square; Designated open space about 32 m away.
Not affected
Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 2

Last sold for £660,000 in December 2016. Semi-detached house, freehold.

8 December 2016£660,000
10 November 2003£305,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area119 m² (1,281 sq ft)
Energy ratingC (70 out of 100), could reach B
PropertySemi-detached house, 5 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in December 2025, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

22 Apr 2026Approved

30 Lyncroft Avenue, Pinner, Harrow, HA5 1JX

Single storey rear extension: 4.00 metres deep, 3.70 metres maximum height and 3...

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22 Jul 2026Approved

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Important details

Council
Harrow
Application type
Prior Notification - Larger Home Extension
Postcode
HA5 1JX
Received
18 Jun 2026
Validated
18 Jun 2026
Ward
Pinner South
Case officer
Show
Target decision
30 Jul 2026
Decision
Prior Approval not required
Decision date
24 Jul 2026
Decision level
Delegated decision
Applicant
Show
Agent
Resi Design Ltd

How this decision compares

Decided in 36 days from validation, 20 days faster than Harrow's median of 56 for extensions. Approved, as 78% of extensions here are.

84%decided within 8 weeks
78%approved
1,726decided in the last year

Plota live figures for extensions decided by Harrow in the last twelve months, from validation. Harrow decision record →

Consultation & key dates

Statutory expiry
30 Jul 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2024 Approved
13 Vale Croft, Pinner, Harrow, HA5 1HJ
Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 3.00 metre…
PL/3216/24
2024 Approved
8 Lyncroft Avenue, Pinner, Harrow, HA5 1JX
Single storey rear extension: 4.00 metres deep, 4.00 metres maximum height and 3.00 metre…
PL/0390/24
2023 Approved
14 Lyncroft Avenue, Pinner, Harrow, HA5 1JX
Single storey rear extension: 4.50 metres deep, 3.00 metres maximum height and 3.00 metre…
PL/0642/23
2023 Approved
14 Lyncroft Avenue, Pinner, Harrow, HA5 1JX
Single storey rear extension
PL/0702/23
2023 Approved
31 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Alterations and extension to roof to form end gable; rear dormer with Juliette balcony; w…
P/2077/23
2022 Approved
22 Lyncroft Avenue, Pinner, Harrow, HA5 1JX
Single storey rear extension: 4.93 metres deep, 3.50 metres maximum height and 3.00 metre…
P/4114/22/PRIOR
2022 Approved
67 Eastcote Road, Pinner, Harrow, HA5 1EJ
Electronic communications notification: Replacement of 2 X equipment cabinets with 1 new…
P/1442/22
2021 Approved
51 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Single and two storey side extension; single storey rear extension; external alterations…
P/2519/21
2020 Approved
4 Vale Croft, Pinner, Harrow, HA5 1HJ
Single storey side to rear extension
P/4561/20
2020 Approved
3 Lyncroft Avenue, Pinner, HA5 1JU
Conversion of dwelling (use class c3) to house of multiple occupancy (hmo) for upto 8 peo…
P/2173/20/5825
2021 Approved
35 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Single storey rear extension; conversion of garage into habitable room and raise roof hei…
P/0696/21
2020 Refused
4 Vale Croft, Pinner, Harrow, HA5 1HJ
Single Storey Rear Extension: extending 5.99 metres beyond the original rear wall, 3.95 m…
P/3674/20/PRIOR
2020 Approved
3 Lyncroft Avenue, Pinner, HA5 1JU
Conversion of dwelling (use class c3) to house of multiple occupancy (hmo) for upto 10 pe…
P/1031/20/5776
2020 Refused
3 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Conversion of dwelling (use class C3) to House of Multiple Occupancy (HMO) for upto 8 peo…
P/2173/20
2020 Refused
3 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Conversion of dwelling (use class C3) to House of Multiple Occupancy (HMO) for upto 10 pe…
P/1031/20
2020 Approved
23 Lyncroft Avenue, Pinner, HA5 1JU
Single storey rear extension: 4 metres deep 3.8 Metres maximum height 2.7 Metres high to…
P/0260/20/PRIOR
2019 Approved
45 Lyncroft Avenue, Pinner, Harrow, HA5 1JU
Single storey rear extension
P/5245/19
2017 Approved
1 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 3.50 Metres beyond the original rear wall 3.55 Me…
P/0653/17
2019 Approved
67 Eastcote Road, Pinner, Harrow, HA5 1EJ
Electronic communications notification; Replacement of 15m monopole; replacement of 1 cab…
P/1629/19
2017 Approved
4 Lyncroft Avenue, Pinner, HA5 1JX
Single storey rear extension: extending 3.6 Metres beyond the original rear wall 3 metres…
P/0285/17/PRIOR
2017 Approved
1 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 3.5 Metres beyond the original rear wall 3.6 Metr…
P/3732/17/PRIOR
2017 Approved
4 Lyncroft Avenue, Pinner, HA5 1JX
Single storey rear extension: extending 3.6 Metres beyond the original rear wall 3 metres…
P/0525/17
2016 Approved
5 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 3.1 Metres beyond the original rear wall 3.975 Me…
P/1186/16
2016 Approved
2 Vale Croft, Pinner, HA5 1HJ
Single storey rear extension: extending 6 metres beyond the original rear wall 3.1 Metres…
P/0203/16
2025 Approved
2 Lyncroft Avenue, Pinner, Harrow, HA5 1JX
Certificate of Lawful Development Proposed: Hip to gable end roof alterations with rear d…
PL/2259/25
Harrow
Planning Authority Score
4.9/10
Below average
#153 of 296 councils
Relevant to this application:
Householder decisions

Harrow ranks #115 out of 296 councils for householder decision speed. Harrow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

One of the strictest councils
only 83% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Harrow decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #273 of 296
83%
Householder approved
Below avg (90%) #261 of 296
71%
Decided in 8 weeks
Above avg (63%) #115 of 296
33%
Extended time limit
Below avg (41%) #77 of 296
44%
Minor dwellings approved
133 decided (1-9 homes)
80%
Major dwellings approved
5 decided (10+ homes)
38%
Change of use approved
26 decided
1,330
Total decisions
298 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.