Basement approval rate in Hertsmere
Hertsmere approved 89.5% of basement applications, based on 19 decisions analysed.
Last updated: March 2026
89.5%
basement approval rate
19
Basement decisions
17
Approved
2
Refused
85.1%
Hertsmere overall
Basement applications are approved more often than the Hertsmere average (85.1%), suggesting the council is relatively receptive to these projects.
How basement compares in Hertsmere
Basement
89.5%
Hertsmere all applications
85.1%
Planning a basement in Hertsmere?
89.5% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's basement approval rate
✓ Nearest comparable basement decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Get Hertsmere Pro Report — £79
✓ Nearest comparable basement decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Hertsmere
83.0%
86.2%
84.6%
77.3%
82.6%
81.8%
90.8%
80.2%
88.1%
72.6%
85.5%
84.6%