About the Lilley Conservation Area
The Lilley Conservation Area covers about 9.1 hectares and was designated by North Hertfordshire District Council in 1979. Inside the boundary are 13 listed buildings (1 Grade II*, 12 Grade II). The most significant is Church of St Peter, Grade II*.
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.
- Church of St PeterGrade II*
- 24, East StreetGrade II
- 41 42 44 45, West StreetGrade II
- 55, West StreetGrade II
- Church CottageGrade II
- Church FarmhouseGrade II
- CopperhillGrade II
- Horseshoe CottageGrade II
- Laburnam CottageGrade II
- Lilley Arms Public HouseGrade II
- Monument in St Peter's Churchyard (8 Metres to South of Church Tower)Grade II
- Monument in St Peter's Churchyard (9 Metres to South of Church Tower)Grade II
- Old Post Office CottagesGrade 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
WEBLilley Conservation Area AppraisalNorth Hertfordshire District Council’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 North Hertfordshire District Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.