About the Twickenham Riverside Conservation Area
The Twickenham Riverside Conservation Area covers about 85 hectares and was designated by London Borough of Richmond upon Thames in 1969. Inside the boundary are 64 listed buildings (2 Grade I, 15 Grade II*, 47 Grade II). The most significant is Marble Hill House, Grade I. Part of the area lies in flood zone 2, 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.
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.
- Marble Hill HouseGrade I
- Orleans House the Octagon Room and Service Wing AdjoiningGrade I
- 1, 2 (Warvick House) and 3 (Seymour House) Montpelier RowGrade II*
- 3-12, Sion RoadGrade II*
- Buckingham House Dudley House Farthingworth and Gate and Railing Norfolk HouseGrade II*
- Church of St MaryGrade II*
- Cross Deep and Coach HouseGrade II*
- Fotheringay House Tennyson HouseGrade II*
- Grotto or shell house in the grounds of Thames EyotGrade II*
- Leicester House Queen Anne House Wolsey House and GateGrade II*
- Number 29 (montpelier House) and Number 30 ( South End House), Walls, Piers, Railings and Gazebo in GroundsGrade II*
- Pope's Grotto in Grounds of St Catherine's High SchoolGrade II*
- Sion CottageGrade II*
- Sion House, Railings and PiersGrade II*
- Twickenham War MemorialGrade II*
- Underground Passage in Grounds of St Catherine's High SchoolGrade II*
- York House, Garden Walls Wrought Iron Gates and Boundary Walls Along Sion Road on the East Side and Riverside on the SouthGrade II*
- 13, Church StreetGrade II
- 14, Church StreetGrade II
- 163 and 165, Richmond RoadGrade II
- 2, The EmbankmentGrade II
- 22, Church StreetGrade II
- 22, The EmbankmentGrade II
- 23, The EmbankmentGrade II
Show all 64 listed buildings ↓All 64 listed buildings
- 24, 25 and 26, Church StreetGrade II
- 24, The EmbankmentGrade II
- 25, Montpelier RowGrade II
- 25, THE EMBANKMENT (See details for further address information)Grade II
- 40, Church StreetGrade II
- 44 and 45, Church StreetGrade II
- 46, Church StreetGrade II
- 47, Church StreetGrade II
- 5, The EmbankmentGrade II
- 7, The EmbankmentGrade II
- 8, 9 and 10, The EmbankmentGrade II
- Arragon HouseGrade II
- Aubrey HouseGrade II
- Barclays BankGrade II
- Boathouse and deep-water dock, riverside landing stage, steps, balustrade and gates, Thames EyotGrade II
- Brick Wall to South and East St Mary's Church, Running From South to South EastGrade II
- Eton CottageGrade II
- Ferry HouseGrade II
- FerrysideGrade II
- Fountain at West End of York House GardensGrade II
- Gazebo in Grounds of South End HouseGrade II
- Ice House to West of Marble Hill HouseGrade II
- K6 Telephone Kiosk Junction of King Street and Water LaneGrade II
- Langham CottageGrade II
- Lincoln House Melcombe House Wessex HouseGrade II
- Loggia in the grounds of Thames EyotGrade II
- Riverside HouseGrade II
- Ryan HouseGrade II
- South End Cottage White CottageGrade II
- Stable Block to Marble HillGrade II
- Strand HouseGrade II
- Summer House in Radnor GardensGrade II
- The Anchorage, Boundary Wall and Gate PiersGrade II
- The Crown Public HouseGrade II
- The Fox Public HouseGrade II
- Twickenham LibraryGrade II
- White Lodge to Marble Hill ParkGrade II
- White Swan InnGrade II
- Willow BankGrade II
- WoodsideGrade II
Streets in the conservation area
Streets with listed buildings inside the boundary. Boundaries often split a street — check your exact address.
The council’s appraisal
WEBTwickenham Riverside Conservation Area AppraisalLondon Borough of Richmond upon Thames’s description of the area’s character — what planners look at when you apply.Open on council site ↗Nearby conservation areas
Boundary and listed buildings from London Borough of Richmond upon Thames and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.