Data-backed planning intelligence · 3,700,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Side Extension approval rate in Basildon

Basildon approved 89.1% of side extension applications, based on 138 decisions analysed.

Last updated: August 2026

89.1%
side extension approval rate
138
Side Extension decisions
123
Approved
15
Refused
90.0%
Basildon overall

Side Extension applications are approved at roughly the same rate as the Basildon average (90.0%).

How side extension compares in Basildon

Side Extension (138 decided)
89.1%
Basildon all applications (1,648 decided)
90.0%

Planning a side extension in Basildon?

89.1% 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
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Other project types in Basildon

Rear Extension (282 decided)
89.7%
Garage / Parking (274 decided)
86.5%
Dormer (136 decided)
82.4%
Extension (General) (97 decided)
89.7%
Outbuilding (96 decided)
78.1%
76.1%
Loft Conversion (69 decided)
84.1%
Front Extension (69 decided)
91.3%
New Build (64 decided)
82.8%
Conservatory (36 decided)
97.2%
80.8%
95.7%
Annex (20 decided)
75.0%
HMO (18 decided)
83.3%
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