69-73 & 79-89 Sefton Way Cowley UB8 2LH Data via plota.co.uk

80199/APP/2026/1873 Undecided
Extensions & alterations

Proposal

Replacement of existing rotten timber rear balconies with steel balconies. 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
28 Jul 2026
✓
Validated
14 Sept 2026
Decision
Expected by 9 Nov 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision around 7 Nov 2026, from Hillingdon's recent extensions. Comments are open until 8 Oct 2026.

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 6

2 Article 4 directions
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 Named permitted development rights are withdrawn here.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.
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 ↗
Also on the record
Conservation area about 40 m away: Cowley Lock; Inside the Hillingdon built-up area; Green belt about 62 m away: London.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 24 September 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 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

21 Sept 2026Pending

29 CLAMMAS WAY COWLEY UB8 3AN

Details pursuant to the discharge of Condition 5 (Sustainable Urban Drainage) of...

77795/APP/2026/2256
27 Jul 2026Pending

42 NEW PEACHEY LANE COWLEY

Conversion of single dwellinghouse into 2no. self contained flats including park...

21286/APP/2026/1864
12 Aug 2026Pending

2 ROBINS CLOSE COWLEY MIDDX UB8 2LF

Details pursuant to the discharge of Conditions 3 (dimensions of car parking) of...

64645/APP/2026/1997
12 Aug 2026Pending

4 ROBINS CLOSE COWLEY MIDDX UB8 2LF

Details pursuant to the discharge of Conditions 3 (dimensions of car parking) of...

67071/APP/2026/1998
5 Aug 2026Approved

29 CLAMMAS WAY COWLEY UB8 3AN

Details pursuant to the discharge of Conditions 3 (Landscape Scheme) of planning...

77795/APP/2026/1937
5 Aug 2026Approved

29 CLAMMAS WAY COWLEY UB8 3AN

Details pursuant to the discharge of Conditions 4 (Demolition and Construction M...

77795/APP/2026/1938

Important details

Council
Hillingdon
Postcode
UB8 2LH
Received
28 Jul 2026
Validated
14 Sept 2026
Ward
COLHAM & COWLEY
Case officer
Show
Target decision
9 Nov 2026
Agent
Show

Decision outlook

Day 20 of the 56-day target. Hillingdon usually decides extensions by day 54.

Day 2036 days to the 56-day target
66%decided within 8 weeks
92%approved
1,175decided 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
17 Sept 2026
Comments by
8 Oct 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