Annex approval rate in Sefton

Sefton approved 95.0% of annex applications, based on 40 decisions analysed.

Last updated: March 2026

95.0%

annex approval rate

Annex decisions

Approved

Refused

87.5%

Sefton overall

Annex applications are approved more often than the Sefton average (87.5%), suggesting the council is relatively receptive to these projects.

How annex compares in Sefton

Annex (40 decided)

95.0%

Sefton all applications (6,453 decided)

87.5%

Planning a annex in Sefton?

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Less than one set of revised drawings.

Other project types in Sefton

Extension (General) (1,770 decided)

93.3%

Garage / Parking (842 decided)

91.2%

Change of Use (Residential) (473 decided)

71.5%

Dormer (438 decided)

92.2%

Rear Extension (426 decided)

88.7%

Conservatory (356 decided)

97.5%

New Build (316 decided)

84.5%

Outbuilding (273 decided)

90.1%

Side Extension (162 decided)

95.1%

Flat Conversion (78 decided)

74.4%

Loft Conversion (60 decided)

93.3%

HMO (54 decided)

29.6%

Hip-to-Gable Conversion (39 decided)

100.0%

Basement (36 decided)

86.1%

Wraparound Extension (32 decided)

100.0%

Front Extension (26 decided)

96.2%

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