Extension (General) approval rate in Lambeth
Lambeth approved 85.3% of extension (general) applications, based on 1,561 decisions analysed.
Last updated: September 2026
85.3%
extension (general) approval rate
1,561
Extension (General) decisions
1,332
Approved
229
Refused
82.9%
Lambeth overall
Extension (General) applications are approved more often than the Lambeth average (82.9%), suggesting the council is relatively receptive to these projects.
How extension (general) compares in Lambeth
Extension (General)
85.3%
Lambeth all applications
82.9%
Planning a extension (general) in Lambeth?
85.3% 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 extension (general) approval rate
✓ Nearest comparable extension (general) decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Free planning check for Lambeth →
✓ Nearest comparable extension (general) 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
82.2%
87.3%
78.0%
84.6%
81.2%
89.2%
85.2%
85.0%
84.2%
77.3%
83.2%
87.6%
63.6%
76.4%
78.1%