BeforeIBuyHonest. Maybe too honest.
№ 07 / 09 · Planning

Can I extend a house in Mabe Burnthouse?

For anyone buying or renting in Mabe Burnthouse.

Yes, and with less argument than almost anywhere else in this part of Cornwall. Three listed buildings in the whole area. No conservation area drawn over the village. No scheduled monument inside the boundary. Plenty of neighbours already at it. Whatever is stopping you here, it is not the heritage rulebook.

The listing picture is as light as it gets. Historic England records three listed buildings across the area, all of them Grade II, with none at Grade I and none at Grade II star. Listing binds the building itself rather than the street around it, so unless you buy one of those three, nobody is going to ask you to justify a window. For the owners of those three, the position is different and worth understanding before exchange: listed building consent covers anything affecting the character of the place, inside as well as out, and it applies to replacements a normal house would treat as maintenance. Everyone else can skip that chapter entirely.

The live evidence sits in Cornwall Council's planning register. Across the area, 345 applications were lodged between April 2024 and June 2026, with 121 of them in the most recent twelve months. That is a village where somebody is drawing up plans most weeks. The register does not carry consistent outcomes, so treat the volume as proof of appetite rather than of approval, but a street where nobody could get anything done does not generate that much paperwork.

In practice, that means the usual permitted development route is open to most homes here rather than being closed off by a designation. A rear extension, a loft conversion or a garage rebuild on a standard plot is the kind of work the national rules already cover, subject to the size limits and the condition of your own deeds. The stock helps: around 35% of dwellings on the council-tax valuation list are bungalows, which tend to come with the sort of plot that lets you build sideways or upwards without borrowing your neighbour's daylight. What will decide your project is the survey, the slope and the drains, not a heritage officer. Check the title for covenants, because private restrictions outlive planning rules and nobody mentions them at the viewing.

Freedom to alter a home is the single strongest thing this village has going for it. Bring the plans, the constraint that usually kills them is not present here.

Sources: Valuation Office Agency · Local council planning registers · Historic England

Data to April 2026 · Figures checked 20 September 2026 (what this means)