How Much Does an Attic Conversion Cost in Ireland?

Converting your attic into a functional living space is an increasingly popular way to add value and space to your home. It offers an opportunity to utilise an often neglected area, creating extra rooms for living, working, or storage. But many homeowners are often left wondering about the financial implications of such a project.

Here is an overview of the costs involved in undertaking an attic conversion. We will discuss the  factors that influence the overall expenses to provide you with a clearer picture of what to expect when converting an attic in Ireland. 

Average Attic Conversion Costs

A typical attic conversion ends up costing homeowners somewhere between €15,000 to €50,000 on average. However, this is just a broad range as the exact cost depends on multiple factors specific to your home and conversion plans.

Factors that Impact the Cost of an Attic Conversion in Ireland

There are a number of factors that influence the cost of an attic conversion in Ireland – these include:

  • Size
  • Structural factors
  • Stair/Access requirements
  • Plumbing
  • Celing Height
  • Windows
  • HVAC
  • Electric
  • Plumbing

Take a look at the factors below and the impact they have on attic conversion costs.

Size of Attic Space has the Largest impact on the Cost to Convert the Attic

The overall square metres of your attic is one of the primary cost factors. More space means increased material and labour requirements. Prices typically range from €1,000 to €1,600 per square metre for an attic conversion.

For a small attic conversion between 15-25 square metres, homeowners can expect to pay €15,000 to €25,000 on average. A medium-sized attic conversion spanning 25-40 square metres typically falls within the €25,000 to €35,000 price range. 

However, if you have a larger attic area exceeding 40 square metres, be prepared to invest €35,000 or more, with costs potentially surpassing €50,000 for an extensive high-end attic conversion project.

A dormer attic costs a different price to an apex roof or a hipped roof – these prices are just a rough guide.

Structural Requirements

Many attics need substantial structural reinforcement for load-bearing, ventilation, and fire safety. This could involve installing beams, adjusting roof trusses, and floor strengthening which adds €5,000 to €15,000+ to the total.


You’ll need to take into consideration the cost of building a staircase if you lack permanent stairs to access the new space which typically ranges €3,000 to €8,000 for professional stair installation. A code-compliant set of stairs is required if you plan to market your new attic conversion as a bedroom.


If you plan to add an en-suite bathroom in the attic, then plumbing rough-in and bathroom fixture costs can range from €5,000 to €15,000.

Ceiling Height

Building regulations require minimum ceiling heights. If your attic has limited height, costly floor lowering or roof raising could be necessary at €10,000+.

Windows and Natural Light

Adding dormers or skylights to increase natural light in the attic can cost €3,000 to €15,000+ depending on number and complexity.


Extending heating and cooling into the new space averages €2,000 to €5,000 but varies based on your existing HVAC system.

Electrical Work

Wiring, lighting fixtures and fire alarms run approximately €2,000 to €5,000 for electrical labour and materials.

Hire Professional vs DIY

Skilled DIYers can potentially save on labour costs for basic work like framing or insulation but most major structural, electrical, and plumbing tasks absolutely require professional contractors for safety and code compliance. Doing the entire project yourself is extremely risky unless you’re very experienced.

To give you a clearer picture, here’s an example cost breakdown for a basic 32 square metre attic attic conversion:

  • Structural reinforcements: €8,000
  • New staircase: €5,000
  • Dormer window: €6,500
  • Insulation: €2,500
  • Electrical: €3,500
  • Bathroom plumbing/fixtures: €8,000
  • Flooring/plastering: €10,000
  • Architectural/construction fees: €4,000

Total Estimated Cost: €47,500

Conclusion – Cost of Attic Conversion in Ireland in 2024

The costs for an attic conversion in Ireland can seem steep but try to view it as a worthwhile investment in your home. Not only does it create much-needed extra living space for your family but it also significantly boosts your property’s resale value down the line. 

So don’t let the price tag dissuade you from this incredible home investment opportunity. If you need help, don’t hesitate to contact Attic Conversion Ireland.

Let’s create an attic that enables you to maximise your existing property while enhancing your family’s comfort and lifestyle for years to come.

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