Data-backed planning intelligence · 3,200,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

New Build approval rate in Hertsmere

Hertsmere approved 81.3% of new build applications, based on 91 decisions analysed.

Last updated: June 2026

81.3%
new build approval rate
91
New Build decisions
74
Approved
17
Refused
87.4%
Hertsmere overall

New Build applications are refused more often than the Hertsmere average (87.4%), suggesting the council scrutinises these projects more closely.

How new build compares in Hertsmere

New Build (91 decided)
81.3%
Hertsmere all applications (3,948 decided)
87.4%

Planning a new build in Hertsmere?

81.3% 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 new build approval rate
✓ Nearest comparable new build decisions
✓ Refusal triggers specific to your area
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Other project types in Hertsmere

Rear Extension (1,206 decided)
86.0%
Garage / Parking (494 decided)
90.7%
Dormer (475 decided)
90.7%
Side Extension (330 decided)
86.1%
Conservatory (153 decided)
86.9%
Front Extension (151 decided)
94.7%
Outbuilding (143 decided)
88.1%
92.7%
Wraparound Extension (103 decided)
94.2%
Loft Conversion (94 decided)
83.0%
Extension (General) (73 decided)
89.0%
88.9%
Basement (31 decided)
93.5%
Flat Conversion (22 decided)
100.0%
HMO (21 decided)
100.0%
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