How much does a house extension cost in Dublin?

In Dublin, house extensions typically charge €40,000 – €150,000. Prices can vary depending on the complexity of the work and the specific location within the county.

How do I find a reputable house extension in Dublin?

All house extensions in Ireland must be registered with the Local Authority Planning Department. You can verify any professional's credentials at https://www.gov.ie/en/service/planning-permission/. Using OneClickGo ensures you're connected with regulated, vetted professionals only.

How much does a house extension cost in Ireland?

A single-storey rear extension typically costs €1,500–€2,500 per m². A standard 25m² extension costs €40,000–€60,000 fully finished including VAT. Two-storey extensions cost more due to structural complexity.

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

Extensions under 40m² to the rear of a house may qualify as exempted development, provided they meet certain conditions. Side extensions and any extension that brings the total over 40m² require full planning permission.

Dublin, Ireland

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Ireland's capital and largest property market, with the highest transaction volumes in the country. Get free quotes from regulated house extensions in Dublin.

Typical cost: €40,000 – €150,000

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House Extensions in Dublin

Whether you're buying, selling, or renting in Dublin, you'll need a reliable house extension.Ireland's capital and largest property market, with the highest transaction volumes in the country. All house extensions on our platform are regulated by the Local Authority Planning Department.

Single-storey rear extensions

Two-storey and side-return extensions

Kitchen and living space expansions

Planning permission applications

Structural engineer certification

Full project management

FAQs: House Extensions in Dublin

House Extensions in Nearby Counties

Kildare Meath Wicklow

Regulation

All house extensions in Ireland are regulated by the Local Authority Planning Department.

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Other Services in Dublin