Extensions · Dún Laoghaire, Dublin
House Extensions, Attic & Garage Conversions in Dún Laoghaire.
Extensions, attic and garage conversions — design, build and certify in one. Run in-house by Marcin's team across Dún Laoghaire and the wider Dublin area.
Dún Laoghaire · The area
Why house extensions and attic conversions in Dún Laoghaire are a familiar brief.
Dún Laoghaire's Victorian and Edwardian period stock has constrained extension scope shaped by the heavy planning context (significant ACAs, protected structures common, particularly around the seafront and Sandycove). The classic D-L extension brief is a careful single-storey rear extension under the 40 sqm threshold, detailed so it reads against the original period rear elevation and respects the streetscape from above. Side returns feature where plot geometry allows. Original 9-inch solid brick rear walls need engineer-signed structural opening for any wide steel; the work is more involved than a cavity-construction equivalent. Attic conversions feature on the larger period stock where the roof pitch supports it, often involving a rear dormer rather than a side-rooflight scheme. Modern apartments and townhouses by the East Pier carry simpler extension scope but rarely come up for extension work.
House Extensions, Attic & Garage Conversions · How we run it
House Extensions, Attic & Garage Conversions in Dún Laoghaire, the way it should be done.
Extensions are where most clients first speak to us. The reasons vary — a growing family, an attic that has become storage by default rather than design, a 1970s side return that is too cold to use — but the question is always the same: how do we add space to a house that is otherwise lovely, and have it feel like it was always there?
We run extensions end to end. Where you have an architect, we build to their drawings and become the single point of accountability through planning, structural design and construction. Where you do not, we coordinate the architect and engineer ourselves and quote the build to a clear specification before work starts.
Attic conversions are one of our most common projects — adding a bedroom with ensuite to an Irish three-bed semi is one of the highest-value moves a client can make, and it is squarely within our scope. Garage conversions follow the same pattern: insulation, blockwork, plastering, electrics, plumbing and joinery, all run by one team.
The work in Dún Laoghaire runs to the same specification we apply everywhere across Dublin and Leinster. Materials, sub-trade coordination, planning context and final certification are all managed from one studio. If your project is on the dublin side of the city, expect site visits within the working week and same-day responses on WhatsApp.
Extensions in Dún Laoghaire
Common questions about house extensions and attic conversions in Dún Laoghaire.
Yes. Dún Laoghaire is a regular service area for us. Renovations and extensions in Dún Laoghaire, Glasthule and Sandycove. From the Victorian and Edwardian terraces inland of the seafront through to the newer apartments and town houses by the East Pier, we take on full renovation across this south-county coastal corridor. If your project sits in this area we will arrange a site visit, give you an honest indication of scope and timeline at the first meeting, and follow up with a written fixed-price quotation.
Most rear extensions under 40 sqm fall under planning exemption, subject to conditions on height, height to eaves, and proximity to boundaries. We will tell you at first site visit whether your project is exempt or needs planning, and we coordinate the application if it does.
Most Dublin three-bed semi attic conversions run 8 to 12 weeks from the day the scaffold goes up. Adding an ensuite extends it slightly. We give a written schedule and update it weekly.
Yes. We routinely build to architects’ and engineers’ drawings as the main contractor. You get one point of accountability on site.
Yes — we coordinate the engineer and assigned certifier as part of the project so the certification is in place at completion.
Also in Dún Laoghaire
Other capabilities we run in Dún Laoghaire.
Bathrooms in Dún Laoghaire
Plumbing, tiling, showers, wet rooms and ensuites — finished by one team.
Electrical in Dún Laoghaire
Lighting design, sockets and LED strip — wired and signed off correctly.
Carpentry in Dún Laoghaire
Feature walls, wardrobes, kitchens and panelling — drawn, made and fitted in-house.
Extensions elsewhere
House Extensions, Attic & Garage Conversions in nearby areas.
Extensions · Dún Laoghaire
Planning house extensions and attic conversions in Dún Laoghaire?
Same-day replies on WhatsApp. Calls and emails answered within one working day.

