Data-backed planning intelligence · 3,790,000+ decisions analysed across England, Scotland, Wales and Northern Ireland

Outbuilding approval rate in Slough

Slough approved 82.4% of outbuilding applications, based on 1,264 decisions analysed.

Last updated: August 2026

82.4%
outbuilding approval rate
1,264
Outbuilding decisions
1,041
Approved
223
Refused
82.9%
Slough overall

Outbuilding applications are approved at roughly the same rate as the Slough average (82.9%).

How outbuilding compares in Slough

Outbuilding (1,264 decided)
82.4%
Slough all applications (17,899 decided)
82.9%

Planning a outbuilding in Slough?

82.4% 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 outbuilding approval rate
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Other project types in Slough

Rear Extension (7,216 decided)
83.6%
Side Extension (2,823 decided)
82.4%
Garage / Parking (1,275 decided)
84.0%
Loft Conversion (1,168 decided)
87.5%
Wraparound Extension (929 decided)
85.4%
Dormer (871 decided)
85.6%
78.1%
Front Extension (668 decided)
74.4%
83.4%
Extension (General) (329 decided)
81.2%
New Build (246 decided)
71.5%
Conservatory (178 decided)
86.0%
HMO (60 decided)
45.0%
Annex (28 decided)
78.6%
Flat Conversion (24 decided)
79.2%
Basement (16 decided)
68.8%
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