BeforeAfterSingle-Storey Rear Extension — Terenure, Dublin 6W
An old lean-to conservatory replaced with a crisp white-render rear extension, oak bifold doors and integrated rooflights.
About This Service
Home Extension
RSM Construction designs and builds beautiful home extensions across Dublin. Whether it's a single-storey rear extension, a side extension or a full two-storey extension, our team manages architecture, planning, structural work and finishes from start to finish.
Every house extension in Dublin we build is designed to maximise natural light, integrate with your existing home and create flowing open-plan space. We work closely with architects, structural engineers and Dublin City Council planners to keep your project on track.
Looking to also reconfigure your interior? Our complete house renovation Dublin and builders Dublin teams work seamlessly with your extension build.
Looking for related services? See our attic conversion Dublin, house build Dublin and complete renovation Dublin.
Benefits
Why Choose RSM for Home Extension
Rear, side and two-storey options
Architectural design included
Planning permission managed
Structural engineering
Open-plan living specialists
Energy-efficient construction
Premium finishes and materials
Project managed end-to-end
Cost Guide
Home Extension — Pricing & Timeline
Home extensions in Dublin range from compact rear additions to full two-storey builds, so we don't publish standard rates or fixed durations. Following a site visit, planning review and design discussion, we issue a fully tailored quotation and project programme.
Planning
Do You Need Planning Permission for a Home Extension in Dublin?
Many home extensions in Dublin qualify as exempted development under the Planning and Development Regulations. A rear extension can be built without planning permission if it does not exceed 40 square metres (for a house) and does not reduce rear garden space below 25 square metres. Side extensions and two-storey additions typically require planning permission. RSM Construction handles all planning applications as part of our full-service offering.
Before & After
Home Extension Transformations
BeforeAfter
BeforeAfterTwo-Storey Side Extension — Phibsborough, Dublin 7
A blank end-of-terrace gable transformed with a contemporary brick-and-zinc two-storey side extension and slim picture window.
BeforeAfterWraparound Kitchen Extension — Glasnevin, Dublin 9
A small dim kitchen opened into a vaulted open-plan kitchen-living-dining space with a flush rooflight and sliding garden doors.
Gallery
Home Extension Projects in Dublin
FAQs
Frequently Asked Questions
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