138 High Street Harlington Data via plota.co.uk

18883/APP/2026/1852 Approved
Extensions & alterations

Proposal

Erection of a single storey rear extension, including alterations to the existing rear chimney Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
27 Jul 2026
✓
Validated
6 Aug 2026
✓
Approved
2 Oct 2026

Approved on 2 Oct 2026 · Last checked 2 Oct 2026

Documents

View the documents on the council's website ↗

Site constraints 11

Harlington Village conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Article 4 direction
Residential extensions. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Heritage at risk: Harlington Village, Heathrow Villages
On the register of historic places assessed as at risk.
A designated building, monument, park or conservation area assessed as at risk from neglect, decay or development. Proposals that secure its future are looked on favourably.
Historic England ↗
Archaeological priority area
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Hillingdon 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 ↗
National infrastructure project 359 m away: M4 Junctions 3 to 12 Smart Motorway
The site is 359 m from the project boundary. Highway, decided. The project page says whether consent was granted. Also within 2 km: Expansion of Heathrow Airport (Third Runway) (at pre-application, 142 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
1 listed building within 150 m
Nearest: The White Hart Public House, Grade II, 56 m away
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Historic England ↗
Also on the record
Inside the Hillingdon built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square; Green belt 31 m away: London; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 1, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, 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.

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Nearby new applications

18 Sept 2026Pending

61 & 63 HUDSON ROAD HARLINGTON UB3 5EN

Erection of Single Storey Rear, Part Two Storey Rear Extensions following demoli...

80240/APP/2026/1971

Important details

Council
Hillingdon
Received
27 Jul 2026
Validated
6 Aug 2026
Ward
H/ROW VILLAGES 2022
Case officer
Show
Target decision
2 Oct 2026
Decision
Approval
Decision date
2 Oct 2026
Agent
Show

How this decision compares

Decided in 57 days from validation, about the council's usual 54 days. Approved, as 91% of extensions here are.

66%decided within 8 weeks
91%approved
1,276decided in the last year

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

Consultation & key dates

Consultation
12 Aug 2026
Comments by
3 Sept 2026
Hillingdon
Planning Authority Score
3.5/10
Below average
#219 of 296 councils
Relevant to this application:
Householder decisions

Hillingdon ranks #194 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (90%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Hillingdon decision statistics
Based on MHCLG data, the year to March 2026
85%
Overall approval rate
Below avg (87%) #208 of 296
90%
Householder approved
Above avg (90%) #191 of 296
58%
Decided in 8 weeks
Below avg (63%) #194 of 296
45%
Extended time limit
Above avg (41%) #190 of 296
61%
Minor dwellings approved
67 decided (1-9 homes)
65%
Change of use approved
17 decided
1,680
Total decisions
255 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings