Side Extension approval rate in Watford
Watford approved 97.0% of side extension applications, based on 633 decisions analysed.
Last updated: September 2026
97.0%
side extension approval rate
633
Side Extension decisions
614
Approved
19
Refused
74.1%
Watford overall
Side Extension applications are approved more often than the Watford average (74.1%), suggesting the council is relatively receptive to these projects.
How side extension compares in Watford
Side Extension
97.0%
Watford all applications
74.1%
Planning a side extension in Watford?
97.0% get approved, but the odds vary by street. Your Full Planning Analysis shows exactly what gets approved and refused near your property.
✓ Your ward's side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Watford →
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Watford and any other published UK council — see the data services →
Other project types in Watford
90.0%
91.1%
90.2%
95.8%
93.6%
90.4%
99.5%
99.4%
89.5%
100.0%
96.3%
92.2%
100.0%
88.0%
95.8%