About the Long Marston Conservation Area
The Long Marston Conservation Area covers about 11 hectares and was designated by Dacorum Borough Council in 1968. Inside the boundary are 17 listed buildings (1 Grade II*, 16 Grade II). The most significant is Tower of the Old Church of All Saints, Grade II*. 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.
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.
- Tower of the Old Church of All SaintsGrade II*
- 26 and 28/30, Station RoadGrade II
- 36, Tring RoadGrade II
- Church FarmhouseGrade II
- Church of All Saints (church of England)Grade II
- Gatehouse at Loxley FarmGrade II
- Honey Wood Cottage to Rear of Number 34 Wheelers TerraceGrade II
- Little Farm and 2 Adjoining BarnsGrade II
- Long Marston War MemorialGrade II
- Loxley FarmGrade II
- Nash CottageGrade II
- Old Church CottageGrade II
- Old ThatchGrade II
- Rose and Crown CottageGrade II
- South Barn at Church FarmGrade II
- The Post OfficeGrade II
- The Queens Head Public House With Attached East Barn,Linked South Block and Automobile Association Village Sign on BarnGrade II
Streets in the conservation area
Streets with listed buildings inside the boundary. Boundaries often split a street — check your exact address.
Nearby conservation areas
Boundary and listed buildings from Dacorum Borough Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.