About the Hemel Hempstead Old Town Conservation Area
The Hemel Hempstead Old Town Conservation Area covers about 7.3 hectares and was designated by Dacorum Borough Council in 1968. Inside the boundary are 61 listed buildings (1 Grade I, 7 Grade II*, 53 Grade II). The most significant is Church of St Mary, Grade I. 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 I
- 109 High StreetGrade II*
- 80, High StreetGrade II*
- Charter TowerGrade II*
- Numbers 6 and 8 Wrought Iron Front RailingsGrade II*
- The BuryGrade II*
- The King's Arms Public HouseGrade II*
- The Old Bell Public HouseGrade II*
- 10, 12 and 14, QueenswayGrade II
- 103, High StreetGrade II
- 105 and 107, High StreetGrade II
- 107a, High StreetGrade II
- 111, High StreetGrade II
- 16 and 18, High StreetGrade II
- 23 and 25, QueenswayGrade II
- 25, High StreetGrade II
- 27 and 29, QueenswayGrade II
- 27, High StreetGrade II
- 29, High StreetGrade II
- 33-39, High StreetGrade II
- 36, High StreetGrade II
- 38, High StreetGrade II
- 4, QueenswayGrade II
- 40, High StreetGrade II
Show all 61 listed buildings ↓All 61 listed buildings
- 44 and 44a, High StreetGrade II
- 45, 47 and 47a, High StreetGrade II
- 48-52, High StreetGrade II
- 54-58, High StreetGrade II
- 57, High StreetGrade II
- 59, High StreetGrade II
- 60, High StreetGrade II
- 61, High StreetGrade II
- 62 and 64, High StreetGrade II
- 63, High StreetGrade II
- 63a, High StreetGrade II
- 65-69, High StreetGrade II
- 66, High StreetGrade II
- 68, High StreetGrade II
- 70 and 72, High StreetGrade II
- 71, High StreetGrade II
- 73, High StreetGrade II
- 74, High StreetGrade II
- 76 and 78, High StreetGrade II
- 79 AND 79A, HIGH STREET (See details for further address information)Grade II
- 81, HIGH STREET (See details for further address information)Grade II
- 82-88, High StreetGrade II
- 87, High StreetGrade II
- 89, High StreetGrade II
- 91-95, High StreetGrade II
- 94 and 96, High StreetGrade II
- 97, High StreetGrade II
- 98 and 100, High StreetGrade II
- 99, High StreetGrade II
- Barn in Garden of Numbers 62 and 64Grade II
- Garden Walls of Manor HouseGrade II
- Lloyd's BankGrade II
- Pump and lamp post numbered 5036Grade II
- Rose and Crown Public HouseGrade II
- The King's Arms Public HouseGrade II
- The White Hart Public HouseGrade II
- Town HallGrade II
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.