About the Olympia and Avonmore Conservation Area
The Olympia and Avonmore Conservation Area covers about 17 hectares within London Borough of Hammersmith & Fulham’s area. Inside the boundary are 13 listed buildings (2 Grade II*, 11 Grade II). The most significant is 22 and 22a, Avonmore Road W14, Grade II*. 1 Article 4 direction over the area removes further householder rights, on top of the conservation area limits below. Part of the area lies in flood zone 3, so an extension may need a flood risk assessment.
What changes inside the conservation area
Conservation areas are “Article 2(3) land”. You keep most permitted development rights, but these are removed or tightened.
- Rear extensionElsewhere: 3 m · 6 m with PANo 6 m / 8 m prior approval
- Two-storey extensionElsewhere: 3 mNeeds planning permission
- Side extensionElsewhere: Half the widthNeeds planning permission
- Loft conversionElsewhere: 50 m³Needs planning permission
- Garden roomElsewhere: 2.5 m high by boundariesNot beside the house
- PorchElsewhere: 3 m²Same limits
- Solar panelsElsewhere: 0.2 m projectionSame limits
- Air source heat pumpElsewhere: 1 unitNot facing the road
- Fences, walls and gatesElsewhere: 2 m · 1 m by a roadSame limits
- External claddingElsewhere: Matching materialsNeeds planning permission
- Tree workElsewhere: No notice6 weeks’ notice to the council
- Demolition (over 115 m³)Elsewhere: AllowedNeeds planning permission
Limits for a semi-detached house under the GPDO 2015. An Article 4 direction can remove more.
Article 4 directions here
These overlap the conservation area. Householder directions remove more of the rights above; change-of-use ones don’t affect extending a house.
- Article 4 - No 100Householder works
Listed buildings in the conservation area
Any work affecting these needs listed building consent, inside or out. Each links to its entry on the National Heritage List.
- 22 and 22a, Avonmore Road W14Grade II*
- Grand Hall and Pillar Hall, Olympia Exhibition CentreGrade II*
- 2 and 3 and Area RailingsGrade II
- 4 and Area RailingsGrade II
- 6-9, Addison Bridge Place W14Grade II
- Bollard Set Into Pavement Outside No 7Grade II
- Bollard Set Into Pavement Outside No 8Grade II
- Bollard Set Into Pavement Outside No 9 Addison Bridge PlaceGrade II
- Bollards Set Into Pavement Outside No 7Grade II
- Former West London County CourtGrade II
- No 5 and Area RailingsGrade II
- Olympia GarageGrade II
- Olympia National and Olympia Central, Olympia Exhibition CentreGrade II
Nearby conservation areas
Boundary and listed buildings from London Borough of Hammersmith & Fulham and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.