House Extension Costs in Ireland: What to Budget For

A well-planned house extension can add significant space and value to your home. Understanding what drives costs in Ireland helps you budget more accurately.

Planning a house extension in Ireland Adding an extension to your home is one of the most significant investments a homeowner can make. Whether you need an extra bedroom, a larger kitchen-diner or a home office, the right extension can transform how you live in your property. Understanding what affects extension costs in Ireland helps you set a realistic budget and compare builder quotes with confidence. What affects the cost of an extension? House extension costs vary considerably depending on: the size of the extension whether it is single or double storey the type of foundation required the specification of finishes glazing and roof design whether planning permission is required the complexity of connecting to existing services site access As a general rule, the cost per square metre of a well-specified extension in Ireland includes all construction but not furniture or fitted items unless specified. Single-storey extensions Single-storey extensions are the most common type of home addition. They are often used to extend kitchens, create open-plan living areas or add utility and boot rooms. Costs are influenced by: roof type (flat or pitched) amount of glazing underfloor heating or wet plaster finish quality of windows and doors Bi-fold or sliding doors and roof lights add to both cost and the feeling of space. Double-storey extensions A double-storey extension costs more upfront but typically offers better value per square metre as the foundation and roof costs are shared across both floors. These are a popular choice for adding bedrooms and bathrooms above a ground-floor extension. Planning permission Many smaller extensions in Ireland fall within exempted development rules and do not require planning permission. However, larger or more complex additions may need a

Published: 6/8/2024

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