Garden room tools

Free tools to help you plan a garden room in Ireland. No sign-up.

• Planning permission checkerCheck your garden room against the 2026 exemption rules: size, open space, position, height and use.
• Garden size plannerEnter your garden's width and depth to see the largest garden room you can build without planning, drawn to scale.
• Garden home checkerCheck a 32 to 45 m² garden home against every Class 3A condition, from size and boundaries to services and access.
• Running cost calculatorWork out what your garden room costs to heat and power per day, month and year at your electricity price.
• Cost estimatorEstimate the cost of a garden room or a 32 to 45 m² garden home by size and build type, with foundations, electrics, heating and fees.