House Renovation Cost Ireland 2026 — Per m² Breakdown

Renovating an existing house in Ireland looks cheaper than building new — and usually it is. But the per-square-metre rate is only half the story. The real cost depends on when the house was built, what you're planning to touch, and how many surveys the property's age quietly forces you into before you can even start.

This guide breaks down what you should actually expect to pay to renovate a house in Ireland in 2026 — by quality level, by property age, and by the line items that catch most homeowners out. All figures are based on the SCSI House Rebuilding Guide (2024/2025) and the Buildcost Construction Cost Guide (H2 2025) — the same sources your architect and quantity surveyor will use.

Before you go any further, you can get a free estimate at BeforeYouBuild.ie — it takes 60 seconds and gives you a county-specific renovation cost range.

What Does It Cost to Renovate a House in Ireland in 2026?

Renovation rates are quoted per square metre of the area being renovated. Unlike new builds, the range is wider because "renovation" covers everything from a paint-and-kitchen refresh to a full structural rebuild inside existing walls.

For a typical 3-bed semi-detached home of around 110m², a mid-range full renovation puts your base construction cost at approximately €132,000 – €220,000 before professional fees, VAT, and anything the property's age adds on top.

That last part is the one most guides skip — so let's deal with it properly.

Why the Age of the House Changes Everything

In renovation planning, the year a house was built determines which surveys and checks will likely be required. This is the single biggest reason two renovations of the same size can cost wildly different amounts.

Asbestos R&D survey: will likely be required for any property built before 2000 if structural work is involved. ~€500.

Damp and timber report: recommended for any property built before 1970. ~€450.

Lead pipe survey: recommended for any property built before 1980. ~€200.

Electrical Condition Report (EICR): strongly recommended for any property more than 15 years old. ~€500. In practice, this almost always comes back recommending at least partial rewiring — budget €4,000 – €10,000 depending on size.

Pyrite and mica testing: this is the serious one. If your house was built between 1990 and 2013 and it's in Donegal, Mayo, Clare, or Limerick, testing is strongly recommended before you spend anything else. Testing runs €3,500 – €8,000. If it comes back positive, you are no longer renovating — you are potentially demolishing and rebuilding.

A 1960s 3-bed semi being fully renovated will typically add €1,650 in surveys on top of the construction cost. A 2015 semi being renovated will add €0 – €500. Same house, different era, genuinely different project.

The Full Cost Breakdown for a Typical Renovation

Here's where the money actually goes on a full mid-range renovation of a 110m² 1960s semi-detached house.

1. Construction Cost

The main spend. Covers demolition of internal finishes, new plasterboard and plastering, kitchen supply and fit, bathroom supply and fit, painting and decorating, flooring, internal doors, and replacement of any M&E that's been upgraded.

For a 110m² mid-range renovation: approximately €176,000 (using the €1,600/m² mid-point).

Roughly:

• Materials: ~45% of construction cost
• Labour: ~40% of construction cost
• Specialist subcontractors: ~15% of construction cost (electrical, plumbing, tiling)

2. Structural Work Allowance

If your renovation includes any structural changes — knocking a wall, opening up the back of the house, moving a staircase — add an uplift of approximately 10–15% to the base rate. Any pre-2000 property will likely need an asbestos survey due to the invasive nature of structural work.

For the same 110m² project with moderate structural work: add €17,600 – €26,400.

3. Professional Fees

Most full renovations need an architect or architectural technologist, and any structural change needs a structural engineer. Architect fees on renovation work typically run 6–10% of construction cost — lower than new build because there's no planning application for most internal work.

On a €176,000 renovation: €10,500 – €17,500.

A structural engineer for opening up walls or adding a steel: €1,500 – €3,500.

4. Conditional Surveys

For a 1960s property with structural work, expect the full stack:

Total surveys: €1,650.

If your intention is to rip out all the existing electrics and start over, don't bother with the survey — just get a quote and get to work.

5. Planning Permission (Sometimes)

Most internal renovations are classed as exempted development and need no planning permission. You still need one if:

• You're changing the external appearance of the property (new windows in different positions, new doors, rendering changes on a protected structure)
• You're altering a protected structure in any material way
• You're changing the use of the building
• The work affects a party wall with a neighbour

If planning is required, add a €65 application fee, plus architect fees for the application itself — typically €1,500 – €3,500 extra in related professional fees.

6. VAT

Construction services in Ireland attract VAT at 13.5% — the reduced rate that applies to residential renovation and repair work. This is applied to the full subtotal including fees and surveys.

On a €188,150 pre-VAT renovation (construction + structural + fees + surveys): VAT adds approximately €25,400.

7. Contingency

A 10% contingency on construction cost is the minimum on a renovation. In reality, 12–15% is more realistic because renovations surface hidden problems. You open up a wall and find the wiring is perished. You lift a floor and find joists have rot. You strip plaster and find the block is single-leaf with no cavity.

On a €176,000 build: €17,600 minimum, ideally €22,000.

Don't skip this. Renovation contingency is not optional the way it can sometimes be on a new build.

Full Example: 110m² Mid-Range Renovation, 1960s Semi, Dublin

Total realistic budget including contingency: €265,542.

For the same renovation on a 2015 property with no structural changes and minimal surveys, the total drops to approximately €200,000 — a €65,000 swing driven almost entirely by the age of the house.

How Much Does Location Affect the Cost?

Significantly — the same regional multipliers that apply to new builds apply to renovations. Dublin is the reference point; other counties run 5–18% below Dublin rates for labour and material delivery.

The same 1960s semi renovation that runs €244,000 in Dublin would come in at roughly €214,000 in Cork or €202,000 in Galway — a real saving of €30,000 – €40,000.

For a county-specific number, use the build cost calculator — county-by-county guides are rolling out shortly.

What Grants Are Available for Renovations in 2026?

This is where renovation beats new build on available support. 2026 is the most generous SEAI grant package Ireland has ever offered, with €558 million targeting 70,000 homes.

SEAI Individual Energy Upgrade Grants (eligible for any home built and occupied before 2011):

Second wall measure: new from 2026, homeowners who previously got a wall insulation grant can now apply for a second one.

One Stop Shop / National Home Energy Upgrade Scheme: if you're doing a deep retrofit aiming for a B2 BER rating, a One Stop Shop can manage the whole project and grants typically top €25,000 across measures.

Domestic Lead Remediation Grant: if your pre-1980 property needs lead pipes replaced, up to €5,000 covered at 100%.

Vacant Property Refurbishment Grant: if the house you're renovating has been vacant for 2+ years, you may qualify for up to €50,000 (€70,000 if derelict) — separate from SEAI and stackable with it.

Grants are shown on your Before You Build report but not deducted from the headline figure — eligibility depends on your individual circumstances, the age of the property, and in some cases your BER post-works.

Renovation vs Extension vs New Build: Which Is Cheaper per m²?

This is the comparison that actually matters to most people. Here's how the per-m² rates stack up at mid-range spec in 2026:

Renovation looks like the obvious winner on rate alone — but the key word is per m² of area renovated. A renovation doesn't give you more floor space. If your problem is "I need more room," a house extension at €3,000/m² adds space that a renovation at €1,600/m² does not.

If your problem is "the house is tired, cold, and the layout is wrong," renovation is almost always the better call. And if the house is old enough that the surveys start stacking up, it's worth getting a structural opinion before you spend anything on design — some houses look renovatable from the outside but are closer to a new build economically.

Three Things That Catch Renovators Out

1. The "just pop a wall out" problem. Opening up a kitchen-diner by removing an internal wall sounds minor. In practice it usually means a steel beam, structural engineer, building control notice, and asbestos check on any pre-2000 house. Budget €8,000 – €15,000 all-in for a single internal wall removal, not the €3,000 people assume.

2. Rewiring is almost always needed and almost always missed from first quotes. Any house more than 25 years old will almost certainly fail a full EICR. Budget €4,000 – €10,000 for a full rewire, or €2,500 – €5,000 for a partial.

3. Rising damp and timber rot. Nobody budgets for it because nobody expects it. On pre-1970 houses, expect to find at least one of the two. Damp proofing a ground floor runs €3,000 – €8,000. Timber treatment for rot or woodworm runs €1,500 – €5,000.

Add all three together and you can easily add €20,000 – €30,000 to a renovation budget that was never in the original quote.

Get Your Own Estimate in 60 Seconds

Every renovation is different. A 110m² semi built in 1965 with structural work will cost roughly €60,000 more than the same house built in 2015. Your budget needs to reflect your specific property, your specific county, and your specific scope.

Use the Before You Build calculator to get a free, personalised renovation estimate:

👉 Get My Free Estimate → beforeyoubuild.ie

It takes 60 seconds, flags the specific surveys your property's age may require, and gives you a realistic cost range you can take to your contractor, architect, or mortgage broker.

Key Takeaways

• Renovating a house in Ireland in 2026 costs €800 – €3,300 per m² depending on quality and scope
• A typical 110m² mid-range renovation of a 1960s semi costs €240,000 – €270,000 all-in including VAT, fees, surveys, and contingency
• The age of the property drives conditional surveys that can add €500 – €8,000+ before work even starts
• Structural work adds roughly 10–15% on top of the base renovation rate
• Location matters — the same renovation in Galway costs €30,000 – €40,000 less than Dublin
• 2026 SEAI grants are the most generous on record: up to €12,500 for heat pumps, up to €8,000 for walls, and new support for windows and doors
• Plan for 12% contingency, not 10% — renovation reveals problems that new build doesn't

*Data sources: SCSI House Rebuilding Guide (2024/2025), Buildcost Construction Cost Guide (H2 2025), SEAI grant rates (March 2026), Citizens Information (planning exemptions and Better Energy Homes Scheme), Revenue Commissioners (VAT). Figures reflect Q1 2026 rates.*