House Rewiring Cost in Northern Ireland: 2026 Price Guide

A large share of the housing across Northern Ireland, including in Belfast, Derry/Londonderry, Lisburn and Newry, predates modern wiring regulations by decades, so a full or partial rewire is a common job for homeowners buying an unmodernised older property.

Typical costs

• 1-2 bedroom flat, full rewire: roughly £2,000-£3,500
• 3-bedroom terraced house, full rewire: roughly £3,500-£6,000
• 4+ bedroom house, full rewire: £6,000-£9,000+

A partial rewire (just the kitchen, or upgrading the consumer unit and fixing specific circuits) costs a fraction of this, but an electrician will usually want to inspect the whole property first, since old wiring is rarely contained to just one room.

What affects the price

Original lath-and-plaster walls and ceilings, common in older terraces throughout Northern Ireland, take longer to chase and make good than modern plasterboard, which is reflected in labour costs. Houses that have already had a loft conversion or extension sometimes have a patchwork of old and new wiring, which can mean more diagnostic time before a firm quote can be given.

What's actually included

A proper full rewire should include a new consumer unit, all new cabling, socket and switch replacement, and an Electrical Installation Condition Report (EICR) at completion - make sure any quote states this explicitly and that the electrician is NICEIC or NAPIT registered.