Outbuilding approval rate in Greenwich

Greenwich approved 79.0% of outbuilding applications, based on 847 decisions analysed.

Last updated: August 2026

79.0%

outbuilding approval rate

847

Outbuilding decisions

669

Approved

178

Refused

78.2%

Greenwich overall

Outbuilding applications are approved at roughly the same rate as the Greenwich average (78.2%).

How outbuilding compares in Greenwich

Outbuilding (847 decided)

79.0%

Greenwich all applications (23,270 decided)

78.2%

Planning a outbuilding in Greenwich?

79.0% 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
✓ Nearest comparable outbuilding decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect

Free planning check for Greenwich →

Other project types in Greenwich

Rear Extension (5,637 decided)

66.6%

Garage / Parking (2,916 decided)

77.4%

Dormer (2,845 decided)

67.9%

Loft Conversion (2,671 decided)

67.8%

Side Extension (2,066 decided)

59.8%

Change of Use (Residential) (1,588 decided)

70.7%

Basement (854 decided)

76.6%

Hip-to-Gable Conversion (838 decided)

70.5%

Wraparound Extension (688 decided)

57.8%

HMO (663 decided)

62.7%

Extension (General) (617 decided)

77.5%

Flat Conversion (570 decided)

78.1%

Conservatory (480 decided)

76.7%

New Build (434 decided)

85.5%

Front Extension (230 decided)

49.1%

Annex (71 decided)

74.6%

← All Greenwich planning statistics

Check planning approval patterns, Free