Mount Merrion House Extension

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Project Overview

This semi-detached Dublin home had a series of older additions, built pre 1963, that no longer suited the family’s lifestyle or layout needs. The client wanted a more functional, light-filled living space with a better connection to the garden. We redesigned and reconfigured the ground floor with a seamless renovation and a modest but highly effective single-storey extension – delivering a modern, practical, and beautiful home transformation.

The Brief

The homeowners approached us with a clear goal: to improve the flow, natural light, and usability of the ground floor. With an east north east-facing garden and a sloped site, the existing spaces felt dark and disconnected from the outdoors. Our client also wanted to convert their underused garage into a more purposeful space and refresh the kitchen, utility, and bathroom areas – all while keeping within planning-exempt guidelines.

Our Solution

Working with the constraints of the site and the existing structure, our in-house architectural team developed a smart design strategy:

A 23m² single-storey extension was added using flat-roof elements to maximise light and head height without disrupting the existing roofline.
We carefully managed internal demolition to open up the dining and living areas, enhancing flow.
The existing garage was fully converted into a home office, with a raised floor, full insulation, and a new front wall with a bespoke arched-head window.
Stylish features including Crittall-style windows, a pocket door, and custom external joinery gave the space a refined, contemporary feel.
Garden access was improved by removing the raised patio and adding new steps down to the garden, creating a more fluid indoor-outdoor experience.
Services were updated, including relocating the boiler to optimise internal space and streamline utility areas.

The Result

The finished home feels fresh, bright, and highly liveable – with a natural connection to the garden and a more thoughtful use of space throughout. The kitchen, bathroom, and utility areas now serve the family’s needs more effectively, and the new office space adds real everyday value.

Project Highlights

Ground floor reconfiguration & renovation
Single-storey extension with flat roofs (23m² total)
Garage conversion into a modern office
Crittall-style windows & custom joinery
Pocket door for flexible space use
Updated kitchen, bathroom & utility areas
Steps down to newly accessible garden space
ISO-accredited build quality delivered on time & on budget