Multigenerational living: A Growing Housing Conversation in Guernsey
Interest in multigenerational living in Guernsey has increased following encouragement from the Development & Planning Authority (DPA) and its President Deputy Neil Inder for islanders to learn how existing planning policies could support their plans to build extensions, wings or dower units.
Under Policy GP13 in the current Island Development Plan, proposals to alter or extend a residential property in Guernsey will be supported by the Development & Planning Authority, provided certain limited criteria are met, including that it doesn’t negatively affect neighbours or the special interest of a Conservation Area, Area of Biodiversity Importance or protected buildings/monuments.
What is a wing or dower unit?
A dower unit (also known as a wing) is a form of ancillary living accommodation linked to a main home. It can be part of the house, attached, or located within the garden, and may appear self-contained. However, it must remain legally and functionally tied to the principal dwelling and cannot operate as an independent property.
When assessing a dower unit application, planners typically look at:
- Size relative to the main house
- Physical connection or proximity
- Shared access or services
- Whether the property could be subdivided
Conditions are usually attached to ensure the unit remains ancillary.
Benefits of dower units
Rising housing costs, limited land availability, changing needs and an ageing population are all driving more Guernsey households to consider more flexible living arrangements. Policy discussions have also suggested moving toward more flexible approaches to these types of units, reflecting demand for adaptable housing solutions.
For homeowners, a well-designed dower unit can:
- Provide independent space for older relatives or adult children
- Support care arrangements
- Adapt over time for guests, workspaces, or additional living space
This flexibility is one of the main reasons we regularly discuss dower units with our clients as part of long-term housing strategies.
