Grade II* Listed Barn Conversion | Planning & Listed Building Consent | Consented, Unbuilt
| Client | Private |
| Location | Shillington Road, Pirton, Hertfordshire |
| Planning Authority | North Hertfordshire District Council |
| Status | Consent granted — sold with benefit of permission |
| Listing | Grade II* (timber-framed tithe barn) |
| Scope | Planning application and listed building consent |
| Target Audience | Private clients; landowners with listed or historic structures |
A Barn in Its Own Class
Grade II* listing is reserved for buildings of more than special interest — just under six per cent of all listed structures in England carry it. The tithe barn at Pirton sits in that category: a substantial ten-bay timber-framed structure whose history reaches back several centuries and whose importance to the local built record is significant.
When a private client approached Pentangle Design to explore the barn’s conversion to residential use, the heritage constraints were immediate and non-negotiable. Any approach that did not start from a thorough understanding of the building’s significance was going to fail — with Historic England, with North Hertfordshire’s Conservation Officer, and quite likely on appeal.
The Design Approach
Four of the barn’s ten bays — the four leftmost — were identified as the conversion zone, with the remaining six bays left unconverted. This was a deliberate planning strategy as much as a design one: the unconverted bays, suitable for use as a workshop, vehicle collection space, or similar, could be managed without the interventions required for habitation, and the barn’s structural and visual coherence was preserved.
New window openings into the converted section were minimised to the absolute necessary, agreed with Historic England and the Conservation Officer through early pre-application engagement. The principal source of natural light into the new dwelling is a large rooflight set within the existing roof structure — a solution that reads as a minimal intervention from the exterior whilst transforming the interior quality.
A resident colony of Natterer’s bats — a European Protected Species — used the unconverted bays as a roost and flight circuit. Their presence was a material consideration in the consenting process, and the approved scheme was designed to accommodate them.
The Outcome
Planning permission and listed building consent were secured. The original client subsequently sold the barn with the benefit of the permissions — a not-uncommon outcome for heritage conversion projects, where the value created by consent can be a compelling reason to trade rather than build.
The images accompanying this case study are CGI visualisations, not photographs of a completed building.
If you own a listed building — whether you are considering conversion, repair, extension, or simply want advice on what the heritage constraints mean in practice — we can help you navigate the process.



