COLHAM & COWLEY planning approval rate
COLHAM & COWLEY ward in Hillingdon has a 80.4% approval rate based on 688 planning decisions. Hillingdon overall: 77.9%.
Last updated: September 2026
80.4%
ward approval rate
688
Decisions
553
Approved
135
Refused
77.9%
Hillingdon average
COLHAM & COWLEY sits slightly above the Hillingdon average, with a 2.5 point advantage. Planning outcomes here are generally favourable.
How COLHAM & COWLEY compares
COLHAM & COWLEY ward
80.4%
Hillingdon overall
77.9%
Planning in Hillingdon? Check your postcode to see approval rates specific to your ward and street.
Planning professional? PlanningLens runs refusal alerts and evidence packs for Hillingdon and any other published UK council — see the data services →
Recent decisions in COLHAM & COWLEY
10952/APP/2026/2078
Conversion of roof space to habitable use to include hip to gable extension, rea · 10/09/2026
53990/APP/2026/1935
Erection of a single storey rear extension, which would extend beyond the rear w · 09/09/2026
80012/APP/2026/879
Erection of a single storey outbuilding to the rear garden for use as an office. · 08/09/2026
14428/APP/2026/1583
Erection of a part single storey rear extension, conversion of roof space to hab · 04/09/2026
38297/APP/2026/1752
Erection of a single storey rear extension · 28/08/2026
What gets approved near your property?
In Hillingdon, 1 in 5 applications are refused. Your PlanningLens Full Planning Analysis gives you 17 pages of intelligence specific to your property:
✓ Ward-level approval rates for your exact area
✓ Common refusal reasons in Hillingdon
✓ Your 10 nearest comparable planning decisions
✓ Appeal success rates
✓ PDF report to share with your architect
Free planning check for Hillingdon →
✓ Common refusal reasons in Hillingdon
✓ Your 10 nearest comparable planning decisions
✓ Appeal success rates
✓ PDF report to share with your architect
Free. Based on 21,800 decisions.