Side Extension approval rate in Hammersmith & Fulham

Hammersmith & Fulham approved 91.5% of side extension applications, based on 433 decisions analysed.

Last updated: June 2026

91.5%

side extension approval rate

433

Side Extension decisions

396

Approved

Refused

92.2%

Hammersmith & Fulham overall

Side Extension applications are approved at roughly the same rate as the Hammersmith & Fulham average (92.2%).

How side extension compares in Hammersmith & Fulham

Side Extension (433 decided)

91.5%

Hammersmith & Fulham all applications (19,400 decided)

92.2%

Planning a side extension in Hammersmith & Fulham?

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Other project types in Hammersmith & Fulham

Rear Extension (5,258 decided)

92.6%

Loft Conversion (2,800 decided)

92.2%

Basement (2,787 decided)

92.2%

Flat Conversion (2,267 decided)

89.9%

Change of Use (Residential) (1,555 decided)

87.1%

Garage / Parking (1,307 decided)

89.2%

New Build (772 decided)

93.0%

Dormer (660 decided)

91.7%

Extension (General) (572 decided)

93.2%

Outbuilding (563 decided)

92.5%

Conservatory (262 decided)

95.0%

Hip-to-Gable Conversion (113 decided)

83.2%

HMO (100 decided)

86.0%

Wraparound Extension (61 decided)

93.4%

Front Extension (30 decided)

90.0%

Annex (29 decided)

96.6%

← All Hammersmith & Fulham planning statistics

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