Can I now build a modular home or granny flat in my back garden without planning permission?

 As of February 2025, in Ireland, constructing a modular home in your back garden generally requires planning permission. Current regulations allow for certain exemptions: you can build a free-standing structure up to 25 square meters without planning permission, provided it's not intended for habitation. Structures meant for living purposes, such as modular homes, do not fall under this exemption and thus require planning approval.
However, new legislation is being proposed to address this issue. The government is considering changes that would allow "granny flats" or detached modular units to be built in back gardens without the need for planning permission, extending the current exemption for 40 square meter extensions to include these detached units. This proposal aims to provide additional housing options, especially for young adults living with their parents. As of now, this legislation is still under consideration and has not been enacted.
Given these developments, it's advisable to consult BPS or your local planning authority before proceeding with construction, as regulations may change. Staying informed about the latest planning laws will help ensure your project complies with current requirements.

Article written by BPS Planning Consultants LTD