Annex approval rate in Derby

Derby approved 69.6% of annex applications, based on 23 decisions analysed.

Last updated: March 2026

69.6%

annex approval rate

Annex decisions

Approved

Refused

93.4%

Derby overall

Annex applications are refused more often than the Derby average (93.4%), suggesting the council scrutinises these projects more closely.

How annex compares in Derby

Annex (23 decided)

69.6%

Derby all applications (3,995 decided)

93.4%

Planning a annex in Derby?

69.6% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.

✓ Your ward's annex approval rate
✓ Nearest comparable annex decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Get Derby Pro Report — £79

Less than one set of revised drawings.

Other project types in Derby

Rear Extension (1,460 decided)

96.8%

Side Extension (819 decided)

95.6%

Garage / Parking (493 decided)

94.1%

Change of Use (Residential) (329 decided)

90.3%

Front Extension (294 decided)

93.2%

Wraparound Extension (236 decided)

95.8%

Dormer (192 decided)

83.3%

New Build (187 decided)

87.2%

Outbuilding (168 decided)

88.7%

Extension (General) (160 decided)

90.6%

HMO (128 decided)

89.8%

Conservatory (48 decided)

91.7%

Basement (16 decided)

93.8%

Hip-to-Gable Conversion (14 decided)

78.6%

Loft Conversion (12 decided)

91.7%

← All Derby planning statistics

Check planning approval patterns — Free