Side Extension approval rate in North Hertfordshire
North Hertfordshire approved 94.0% of side extension applications, based on 266 decisions analysed.
Last updated: September 2026
94.0%
side extension approval rate
266
Side Extension decisions
250
Approved
16
Refused
93.5%
North Hertfordshire overall
Side Extension applications are approved at roughly the same rate as the North Hertfordshire average (93.5%).
How side extension compares in North Hertfordshire
Side Extension
94.0%
North Hertfordshire all applications
93.5%
Planning a side extension in North Hertfordshire?
94.0% 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 North Hertfordshire →
✓ 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 North Hertfordshire and any other published UK council — see the data services →
Other project types in North Hertfordshire
94.0%
90.5%
94.7%
83.3%
88.2%
90.0%
93.8%
88.9%
83.0%
92.1%
80.0%
88.0%
92.9%