House Extensions Dublin

Planning permission requirements depend on your extension size and design. Single-storey rear extensions under 40m² and not exceeding certain height limits may qualify as exempt development. However, most house extensions in Dublin require full planning permission from Dublin City Council. Two-storey extensions, side extensions, front extensions, and any extension exceeding exempt development thresholds need planning permission. Properties in conservation areas, protected structures, or apartments have stricter requirements. We assess your Dublin property, advise whether your extension design requires planning permission, prepare architectural drawings meeting planning standards, and manage applications through your local authority. All extensions must comply with building regulations regardless of planning status. Building control approval is mandatory for structural work, foundations, and construction.

House extension timelines in Dublin vary by project size and complexity. Single-storey extensions take 12-16 weeks from breaking ground to completion. Two-storey extensions require 16-20 weeks including foundations, construction, roofing, and interior finishing. Small kitchen extensions complete in 10-12 weeks. Large extensions with complex designs need 20-24 weeks. If planning permission is required, add 8-12 weeks before construction starts. The extension process includes foundation excavation, blockwork construction, roof installation, windows and doors, first-fix electrics and plumbing, plastering, flooring, kitchen installation, and decorating. We provide realistic timelines during consultation, manage construction schedules efficiently, and complete most extensions on time. You can typically remain in your Dublin home during work though expect some disruption.

A well-designed house extension typically adds €40,000-€80,000 to your property value in Dublin, often exceeding the extension cost. Kitchen extensions and open-plan living spaces appeal strongly to buyers and significantly increase property marketability. Extensions adding extra bedrooms, bathrooms, or living space command premium prices in Dublin's property market. Single-storey rear extensions on Victorian terraces typically add 15-20% to property value. Two-storey extensions can add 20-30% depending on design quality and additional space created. However, extensions must suit your property type, neighbourhood character, and local market expectations. Poor design or over-development can negatively impact value. We design extensions that enhance your home's functionality, complement existing architecture, and maximise property value through thoughtful planning and quality construction throughout.

Victorian terraces in Dublin suit several extension types depending on your property layout and requirements. Rear extensions are most common, creating open-plan kitchen and dining spaces with bi-fold doors to gardens. Side return extensions utilise narrow side passages, adding 10-15m² of valuable kitchen space without extending far into gardens. Two-storey rear extensions add significant space both downstairs and upstairs but require careful design to respect neighbouring properties and meet planning requirements. Kitchen extensions with roof lights or glazed roofs maximise natural light in typically dark Victorian layouts. We assess your Victorian terrace during consultation, discuss how you want to use additional space, prepare design options suited to your property's character and planning constraints, and recommend extensions that enhance your home whilst respecting its period features and architectural integrity.