Cost of Knocking Down a Supporting Wall Ireland Guide

Load-Bearing Walls
July 27, 2026

Thinking about opening your ground floor? The cost of knocking down a supporting wall Ireland homeowners face in 2026 typically sits between €3,000 and €10,000. The final price depends on the length of the wall, the size of the steel beam needed to replace it, and how much finishing work follows the demolition. In this guide, our team at Cork Demolitions breaks down every cost involved, so you can budget for your wall removal project with confidence.

Average Wall Removal Prices in Ireland

Most supporting wall removals in Irish homes fall within these ranges:

Single doorway opening (around 1 metre): €1,500–€2,500
Kitchen-to-dining knock-through (2–3 metres): €4,000–€7,000
Large open-plan conversion (3.5 metres or more): €7,000–€12,000+

These figures cover the full job: temporary propping, demolition, a correctly sized steel beam, fire-rated boarding, plastering and waste removal. Some contractors offer fixed-price packages for standard load-bearing walls, and these usually start at €6,000 to €8,000. By contrast, removing a non-structural stud wall often costs under €1,000 because the project does not require steel support.

What Affects the Cost of Knocking Down a Supporting Wall?

The span of the wall. The longer the opening, the larger and more expensive the steel beam. A short opening between two rooms costs far less than removing the full width of a house.
The steel beam itself. A structural engineer must size a rolled steel joist (RSJ) for your specific home, and you must replace the load-bearing wall with it. Expect to pay several hundred euro per metre for supply and installation, plus padstones to carry the load.
Structural engineer fees. Before any demolition starts, an engineer must confirm the wall is load-bearing, calculate the beam size, and certify the finished work. Budget €400–€800 for the inspection, calculations and certificate. This paperwork matters for your home insurance and any future sale.
Temporary propping. Safe propping supports the floors and roof above while the wall comes down. It is a non-negotiable part of any professional wall removal.
Making good. Once you remove the wall, you need to patch, plaster, and decorate the floor, ceiling, and adjoining walls. Flooring often needs to run seamlessly across the new space, which can add to the bill.
Services in the wall. A plumber or electrician must relocate radiators, sockets, switches, and pipework hidden in the wall. Moving a radiator typically adds €250–€400.
Waste removal. A masonry wall produces a surprising amount of rubble. If your quote does not already include it, skip hire or waste collection usually adds €200–€350.

The Wall Removal Process, Step by Step

Engineer inspection – confirms the wall is structural and checks for hidden pipes and cables.
Protection and preparation – furniture is cleared, dust screens are installed, and services are disconnected.
Temporary propping – props fully support the structure above before demolition begins.
Install the steel beam – the RSJ and padstones are installed, then the wall below is carefully removed.
Fire-rated boarding and plastering – the beam is clad, and all surfaces are finished flush.
Certification and clean-up – the engineer signs off the work, and all waste is removed from the site.

Most projects take two to four days from starting to finishing.

Do You Need Planning Permission?

In most cases, no. Removing an internal wall does not normally require planning permission in Ireland, unless your home is a protected structure. The work must still comply with Irish Building Regulations, which is why engineer-designed steelwork and a certificate of compliance are essential. A reputable contractor will handle this as standard.

How to Keep Costs Down

You should never cut corners on structural work, but you can trim the budget in other ways. Keep the opening slightly smaller to reduce the beam size.

Do the painting and decorating yourself. Combine the wall removal with a wider renovation, such as a new kitchen, to share labour and set-up costs. Finally, get at least three written quotes so you can compare prices with confidence.

Ready to Open Your Living Space?

Open-plan living transforms how a home feels, letting light travel further and connecting your kitchen, dining and living space into one sociable area. It can also add real value when you sell. At Cork Demolitions, we carry out fully certified supporting wall removals across Cork City and County, with clear fixed pricing and a tidy, professional finish.