COLHAM & COWLEY planning approval rate
COLHAM & COWLEY ward in Hillingdon has a 80.1% approval rate based on 628 planning decisions. Hillingdon overall: 78.9%.
Last updated: April 2026
80.1%
ward approval rate
628
Decisions
503
Approved
125
Refused
78.9%
Hillingdon average
COLHAM & COWLEY is broadly in line with the Hillingdon average — neither notably strict nor notably permissive.
How COLHAM & COWLEY compares
COLHAM & COWLEY ward
80.1%
Hillingdon overall
78.9%
Planning in Hillingdon? Check your postcode to see approval rates specific to your ward and street.
Recent decisions in COLHAM & COWLEY
10894/APP/2026/150
Erection of single storey Front Extension · 06/03/2026
29757/APP/2026/33
Erection of outbuilding to rear garden for use as a summer house/garden store wi · 03/03/2026
36375/APP/2026/2
Erection of first floor rear and side extension, rear conservatory, following de · 02/03/2026
23577/APP/2026/14
Erection of part single part double storey rear extension, conversion of attache · 02/03/2026
24405/APP/2025/3228
Conversion of roof space to habitable use to include side dormer, 3 x roof light · 27/02/2026
What gets approved near your property?
In Hillingdon, 1 in 5 applications are refused. Your PlanningLens Pro Report 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
Get Hillingdon Pro Report — £79
✓ Common refusal reasons in Hillingdon
✓ Your 10 nearest comparable planning decisions
✓ Appeal success rates
✓ PDF report to share with your architect
Less than one set of revised drawings. Based on 30,009 decisions.