architectureHouse Extension Dublin
Attic Conversions in Dublin
Home/Services/Attic Conversions

Attic Conversions in Dublin

Unlock the hidden potential of your home with a premium attic conversion. We add bedrooms, ensuites and home offices that feel like they were always there.

Get Free QuotecallCall +353 1 265 8524

Bedroom, Ensuite & Home-Office Attic Conversions

Attic conversions are the highest-return room you can add to a Dublin home. From a simple Velux conversion that turns dead loft space into a teen bedroom, to a full hip-to-gable conversion that adds a master suite and ensuite, our team handles every project end-to-end — structural calculations, planning, insulation, plumbing, dormer construction and decoration.

We work daily on attic conversions across Dublin semi-detached homes, terraces and bungalows, and on the second-storey extensions that follow when an attic alone isn't enough space.

See related work: kitchen extensions, home renovations, or browse all services.

At a Glance

  • schedule
    Typical Build Time8 - 12 Weeks
  • straighten
    Typical Floor Area20sqm - 35sqm
  • location_on
    CoverageAll Dublin City & County

Attic Conversion Types

Velux conversion — the simplest attic conversion: keep the existing roof, add roof windows and insulation. Best for homes with generous head height.

Dormer attic conversion — the most popular attic conversion Dublin homeowners ask for. Adds a flat-roof or pitched-roof dormer for full standing height across the entire room.

Hip-to-gable attic conversion — converts a hipped roof into a gable end and adds a rear dormer. Significantly increases floor area on semi-detached and end-of-terrace Dublin homes.

Bungalow attic conversion / hip roof extension on bungalow — raise the roof on a bungalow extension or single storey bungalow extension to add a full first-floor level (bungalow double storey extension).

Attic Conversion Cost in Dublin

Cost scales with how much the roof structure changes. A Velux conversion - roof windows only, no change to the roofline - typically runs EUR 30,000 to EUR 45,000. A dormer conversion with a bedroom and ensuite is usually EUR 45,000 to EUR 65,000. A hip-to-gable conversion on a semi-detached or end-of-terrace home, which adds the most usable floor area, generally lands at EUR 60,000 to EUR 80,000 or more.

Every quote is fixed-price and confirmed after a free site survey, once we've assessed your roof pitch, joist strength and existing head height. See how this compares to other project types in our cost guide.

When an Attic Isn't Enough: Second-Storey Extensions

A full second-storey extension is the natural next step when an attic conversion can't deliver enough space - typically because the existing roof pitch is too shallow, or the brief calls for more than one extra room. We build these across Dublin, including adding a full first floor on top of an existing single-storey extension where the foundations and roof allow.

Most second-storey builds add 30–50 sqm of new floor area split across the ground and first floors, and typically cost EUR 130,000 to EUR 220,000 turnkey. We handle full planning, structural engineering and any party-wall agreements.

Timber Frame & Roof Structure

For larger attic conversions and second-storey extensions, we offer full timber-frame construction — dry, fast to erect (weeks instead of months) and very thermally efficient compared to traditional block-built roof structures.

Every attic conversion includes a structural roof inspection, fire-rated escape windows, a building-regs-compliant staircase, and a full insulation upgrade.

More cost & planning answers on our FAQ page.

Common Questions

Quick answers homeowners ask before they book a site visit.

How much does an attic conversion cost in Dublin?expand_more
Budget EUR 30,000 to EUR 45,000 for a simple Velux conversion, EUR 45,000 to EUR 65,000 for a dormer conversion with a bedroom and ensuite, and EUR 60,000 to EUR 80,000+ for a hip-to-gable conversion on a semi-detached home. We confirm a fixed price after the free site survey.
Do you need planning permission for an attic conversion in Ireland?expand_more
A straightforward Velux conversion that only adds roof windows is usually exempted development. A dormer or hip-to-gable conversion that changes the roof profile - or any dormer facing a public road - typically needs full planning permission. We check exemption in writing before quoting any attic project.
What's the difference between a Velux and a dormer attic conversion?expand_more
A Velux conversion keeps the existing roofline and adds roof windows for light and ventilation - the cheapest and fastest option, though headroom depends on your existing roof pitch. A dormer conversion adds a flat or pitched-roof box dormer that gives full standing height across the room, at extra cost and usually requiring planning permission.
How long does an attic conversion take?expand_more
Most Velux conversions take 6 to 8 weeks. Dormer and hip-to-gable conversions typically take 8 to 12 weeks, covering structural work, insulation, plumbing for an ensuite and full decoration.
Can every attic be converted?expand_more
Not quite - building regulations require at least 2.2m to 2.4m of headroom at the highest point and a compliant fixed staircase, so very low roof pitches may need a dormer or hip-to-gable extension rather than a simple Velux conversion. We assess roof pitch, joist strength and staircase access at the free site survey.

Ready to Get Started?

Free site survey, fixed-price quote, fully insured. Call our Dublin 2 team today.

Get Your Free Quotecall+353 1 265 8524