Rear Extension approval rate in Lambeth
Lambeth approved 82.2% of rear extension applications, based on 6,230 decisions analysed.
Last updated: September 2026
82.2%
rear extension approval rate
6,230
Rear Extension decisions
5,119
Approved
1,111
Refused
82.9%
Lambeth overall
Rear Extension applications are approved at roughly the same rate as the Lambeth average (82.9%).
How rear extension compares in Lambeth
Rear Extension
82.2%
Lambeth all applications
82.9%
Planning a rear extension in Lambeth?
82.2% 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 rear extension approval rate
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Lambeth →
✓ Nearest comparable rear extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Planning professional? PlanningLens runs refusal alerts and evidence packs for Lambeth and any other published UK council — see the data services →
Other project types in Lambeth
87.3%
78.0%
84.6%
81.2%
89.2%
85.2%
85.0%
85.3%
84.2%
77.3%
83.2%
87.6%
63.6%
76.4%
78.1%