Home Extensions and Conversions in Ireland

A home extension or conversion in Ireland is a construction project that adds new floor area to a house or changes the use of an existing space, such as turning an attic, garage, or outbuilding into a habitable room. Most homeowners start by describing the space they want, the rooms involved, and whether the work is a new build extension, a conversion, or both. A quote after a visit is normal because the price depends on what is actually there: foundations, drainage, wall types, roof structure, and how easily a builder can get materials and machinery to the back or side of the house. You can post your task on ShamFix and describe what you need, then browse provider profiles by county and contact them directly. Your task stays open for 30 days. Providers registered in this category can see it. Posting a task on ShamFix costs nothing today.

Home extensions and conversions: this category is busy and nearly empty

Demand for home extensions and conversions on ShamFix is high, and at most one provider is listed.

What shapes the price of home extensions and conversions

Volume is the first driver: a single-storey rear extension of a set floor area costs less than a two-storey side extension with the same footprint because of extra structural work, scaffolding, and roof.

Home extensions and conversions questions people ask

Do I need planning permission for a home extension in Ireland?

Many rear and side extensions fall under exempted development rules, but limits apply to height, floor area, and how close the extension comes to boundaries or the public road. A conversion to a separate living unit usually needs permission. Ask your builder or a planning consultant to confirm the position for your exact house before work starts.

How long does a home extension take to build?

A straightforward single-storey extension often takes several weeks on site after foundations, while two-storey extensions and full conversions run longer. The whole project from design to completion can take months because permission, building control, and material deliveries come first. Get a written programme from your builder and expect weather to affect it.

What is usually included in a written quote for an extension?

A good quote lists labour, materials, plant hire, waste removal, and VAT separately, and states whether the price is fixed or subject to remeasure. It should also say who handles structural calculations, building control, and certification. If design or planning fees are extra, ask for those in writing too.

Can I convert my attic or garage without moving out?

Often yes, because the work is contained and the house stays habitable for much of the job. Dust, noise, and temporary loss of a bathroom or storage can still be disruptive. Ask the builder how they will protect floors, stairs, and living areas, and how they will manage access to the rest of the house.

Who is responsible for clearing rubble and cleaning up after the work?

Responsibility should be agreed before work starts and written into the quote. Most builders remove construction waste, but confirm whether the price includes a skip and final clean. Ask who tidies up each day and who disposes of surplus materials, so there is no surprise cost at the end.

What insurance should a builder have for extension work?

Ask for current public liability insurance and, if they employ others, employer's liability insurance. Request the policy numbers and check the cover is valid for the type and scale of your project. Also ask whether the work is covered for structural defects, and keep copies of the documents for your records.

Home Extensions and Conversions in Ireland