About the Grendon Conservation Area
The Grendon Conservation Area covers about 8.3 hectares within North Northamptonshire Council’s area. Inside the boundary are 21 listed buildings (2 Grade II*, 19 Grade II). The most significant is Church of St Mary, 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.
- Church of St MaryGrade II*
- Grendon HallGrade II*
- 1-3, CHURCH WAY (See details for further address information)Grade II
- 15, Church WayGrade II
- 16-18, Church WayGrade II
- 20, Church WayGrade II
- 38, Main RoadGrade II
- 40, Main RoadGrade II
- 5-7, Church WayGrade II
- 50, Main RoadGrade II
- 54-58, Main RoadGrade II
- 6, Church WayGrade II
- Blacksmiths Cottage and Attached ForgeGrade II
- Chest Tomb Approximately 3 Metres North of North Aisle of Church of St MaryGrade II
- Dovecote Approximately 60 Metres South East of Grendon HallGrade II
- Gates and Gatepiers Approximately 10 Metres East of Grendon HallGrade II
- Grendon War MemorialGrade II
- Manor FarmhouseGrade II
- Marlow Hall at Grendon HallGrade II
- Nos 8 and 10 and Wall Attached to WestGrade II
- The Half Moon Public HouseGrade 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 North Northamptonshire Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.