21b Windsor Street Uxbridge Data via plota.co.uk

44355/APP/2025/2414 Undecided

Proposal

Conversion of first floor office space (Class E) into 3no. self-contained flats (Class C3), to include a first floor rear extension and amendments to fenestration. Data via plota.co.uk

Track application Save this application and get an email when its status or decision changes. Alerts nearby Get email alerts for new planning applications near this address.
View original council record ↗Last checked

Application progress

✓
Received
17 Sept 2025
Decision
Target date was 12 Nov 2025

Under consideration

No decision has been issued yet. Plota predicted a decision around 28 Oct 2026; it is now day 406.

The consultation period closed on 16 Oct 2025.

Documents

View the documents on the council's website ↗

Site constraints 11

25 listed buildings within 150 m of the postcode pin
Nearest: 13 and 14, Windsor Street, Grade II, the postcode pin is inside its outline · 2 Grade II*, 23 Grade II
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.
Show all 25 with distances
Historic England ↗
Old Uxbridge / Windsor Street conservation area
Also Old Uxbridge / Windsor Street. 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.
4 Article 4 directions
Changes of use from commercial, business and service uses to dwellinghouses · Construction of new dwellinghouses in employment areas · Residential extensions · Houses of Multiple Occupation (HMOs). Named permitted development rights are withdrawn here.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: Old Uxbridge/ Windsor Street, Uxbridge
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 ↗
Town centre: Uxbridge
A designated centre in the London Plan.
Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.
Also on the record
Radon affected area, class 2; Inside the Hillingdon built-up area; Public transport access: PTAL 6a (excellent), TfL 2023, for the 100 m square; National infrastructure project about 1025 m away: Expansion of Heathrow Airport (Third Runway), at pre-application.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 17 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, the Planning Inspectorate, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI), 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.

Work with planning data?

Every application in Hillingdon - and every UK council - as a live feed, an API, or a bulk CSV export.

About Plota's data service

Nearby new applications

19 Oct 2026Pending

Multi Storey Car Park CRICKET FIELD ROAD UXBRIDGE

Formal Description: Demolition of the existing multi-storey car park (sui generi...

14805/APP/2026/2359
13 Oct 2026Pending

PROSPECT HOUSE 97 OXFORD ROAD UXBRIDGE UB8 1LU

Variation of conditions 5 (details of lighting), 6 (contamination) and 7 (deckin...

38074/APP/2026/2409
9 Oct 2026Pending

FLORA FOUNTAIN 283 HIGH STREET UXBRIDGE

Installation of 2 no. internally illuminated fascia signs, 1 no. internally illu...

14767/ADV/2026/49
9 Oct 2026Pending

FLORA FOUNTAIN 283 HIGH STREET UXBRIDGE

Alterations to shopfront including relocation of entrance doorway with ramp, ins...

14767/APP/2026/2261
9 Oct 2026Pending

8 BELMONT ROAD UXBRIDGE

Erection of a part two-storey side and rear extension, single-storey rear extens...

32401/APP/2026/2317
6 Oct 2026Approved

5 LANCASTER ROAD UXBRIDGE UB8 1AW

Loft extension including constructing a rear dormer, hip to gable and insertion ...

80208/APP/2026/2301

Important details

Council
Hillingdon
Received
17 Sept 2025
Validated
17 Sept 2025
Ward
UXBRIDGE 2022
Case officer
Show
Target decision
12 Nov 2025
Agent
Ravinder Matharu

Decision outlook

Day 406, past the statutory target. 73% of full applications in Hillingdon are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 26 Oct 2026.

Day 406350 days past the 56-day target
37%decided within 8 weeks
88%approved
1,425decided in the last year

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

Consultation & key dates

Consultation
25 Sept 2025
Comments by
16 Oct 2025
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