Annex approval rate in Wiltshire

Wiltshire approved 88.1% of annex applications, based on 2,944 decisions analysed.

Last updated: August 2026

88.1%

annex approval rate

2,944

Annex decisions

2,593

Approved

351

Refused

91.5%

Wiltshire overall

Annex applications are refused more often than the Wiltshire average (91.5%), suggesting the council scrutinises these projects more closely.

How annex compares in Wiltshire

Annex (2,944 decided)

88.1%

Wiltshire all applications (210,657 decided)

91.5%

Planning a annex in Wiltshire?

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Other project types in Wiltshire

Extension (General) (30,518 decided)

92.1%

Garage / Parking (28,673 decided)

88.3%

Rear Extension (16,085 decided)

94.5%

Conservatory (12,728 decided)

95.7%

Outbuilding (10,911 decided)

92.2%

Change of Use (Residential) (10,486 decided)

84.6%

Side Extension (9,708 decided)

94.4%

New Build (9,464 decided)

76.8%

Dormer (5,014 decided)

91.5%

Loft Conversion (2,630 decided)

91.1%

Front Extension (1,962 decided)

95.6%

Wraparound Extension (946 decided)

94.8%

Basement (422 decided)

92.7%

Flat Conversion (336 decided)

83.6%

Hip-to-Gable Conversion (109 decided)

92.7%

HMO (97 decided)

84.5%

← All Wiltshire planning statistics

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