Why Choose a House Extension in South Dublin?
Extending your home is often a more cost-effective alternative to moving. Rather than paying solicitor fees, stamp duty, and the stress of relocating, a well-designed house extension can add significant space and value to your property. In South Dublin's competitive property market, a quality extension increases both your living space and your home's market value.
Benefits of Extending Your Home
- Added Space: Create the extra bedroom, bathroom, or open-plan living area you need without moving.
- Property Value: Professionally built extensions consistently add 15-25% to property value.
- Cost-Effective: Extension costs less than selling and buying elsewhere when considering all associated fees.
- Customization: Design your extension exactly as you envision—tailored to your lifestyle and needs.
- Avoid Moving Stress: Stay in your neighborhood, keep your community connections, and avoid the disruption of relocation.
- Energy Efficiency: Modern extensions can improve home insulation and reduce heating costs.
35+ Years Experience
Founded by Brian Roche with decades of expertise in Dublin building services
Fully Insured & Licensed
CRO: 232079 | VAT: IE5148999H | Professional insurance coverage
Local Expertise
Based in Ballinteer, Dublin 16. Deep knowledge of South Dublin planning requirements
Types of House Extensions We Build
We specialize in all types of residential extensions to meet your specific needs. Whether you need a modest additional space or a major renovation, BR Building Services has the expertise to deliver quality results.
Single Storey Rear Extensions
The most popular option, ideal for adding kitchen renovations or extending existing living areas. Most qualify as exempt development, requiring no planning permission.
Side Extensions
Perfect for properties with sufficient side access. Add extra living space, utility areas, or additional bedrooms with minimal disruption to rear gardens.
Wraparound Extensions
Combine front and rear extensions to maximize available space. Creates impressive open-plan living areas and transforms property layout. Often combined with garden rooms for additional outdoor living.
Two-Storey Extensions
Add substantial space across two levels for additional bedrooms, bathrooms, and living areas. Requires careful planning and structural design.
Planning Permission for House Extensions in Dublin
Understanding planning permission requirements is crucial before starting your house extension project. Ireland's exempt development rules can save you time and money, but larger projects require formal planning approval.
Exempt Development Rules (Single Storey Rear Extensions)
Most single storey rear extensions qualify as exempt development under Irish planning legislation, meaning you do not need planning permission. Typical exemptions include:
- Extensions up to 40 square meters in area
- Single storey only (no second floor)
- Maximum height of 4 meters to the roof ridge
- Must not reduce garden open space below 25% of original site area
- Cannot be closer than 2 meters to site boundary at rear (in some cases)
- Must comply with building regulations
When You Do Need Planning Permission
The following extensions typically require formal planning permission:
- Extensions larger than 40 square meters
- Two-storey or multi-storey extensions
- Front extensions (subject to specific rules)
- Wraparound extensions (side + rear combination)
- Extensions in protected structures or conservation areas
- Projects affecting external appearance or road access
Always verify your specific project with your local authority. BR Building Services can assess your property and advise whether planning permission is required. Contact us for a free consultation to understand your options.
Our House Extension Process
BR Building Services follows a structured approach to deliver quality extensions on time and within budget. From initial consultation to final handover, we manage every aspect professionally.
Free Consultation & Site Visit
We visit your property in Ballinteer, Dundrum, or across South Dublin to understand your vision, assess the site, and discuss feasibility. No obligation—simply an opportunity to explore possibilities.
Design & Planning
Our team prepares detailed designs and identifies planning requirements. If planning permission is needed, we guide you through the application process. We ensure designs comply with building regulations and maximize your space.
Detailed Quote & Proposal
Receive a comprehensive quote detailing costs, timeline, and scope of work. Our transparent approach means no hidden costs or surprises during construction.
Building Regulations Approval
We manage the building regulations approval process, ensuring all structural and safety requirements are met. Regular inspections verify compliance throughout construction.
Construction & Project Management
Our experienced team executes the work with minimal disruption to your daily life. Regular communication keeps you informed of progress. We maintain site cleanliness and professionalism throughout.
Final Inspection & Handover
Building regulations final inspection certifies completion. We handle all paperwork, provide warranty documentation, and ensure your new extension is ready to enjoy.
House Extension Costs in Dublin
The cost of a house extension in Dublin varies significantly based on size, complexity, design specifications, and site conditions. While we cannot quote without seeing your property, typical costs for South Dublin extensions include:
Single Storey Rear Extensions
A standard single storey rear extension of 20-30 square meters typically costs €30,000 to €60,000 depending on finish quality and specifications. Larger exempt development extensions (up to 40 sqm) may range €50,000 to €80,000+.
Side Extensions
Side extensions involve additional structural requirements and typically cost €40,000 to €100,000 depending on size and complexity.
Two-Storey Extensions
Two-storey extensions are more complex and usually cost €80,000 to €200,000+ depending on specification and size.
Contact BR Building Services for a detailed quote specific to your project. Our quotes include all labor, materials, design, building regulations approval, and project management—nothing hidden.
Factors Affecting Extension Costs
- Existing foundation and ground conditions
- Structural requirements and party wall matters
- Finish specifications (materials, finishes, fittings)
- Planning permission (if required—adds time and fees)
- Access and site conditions
- Building regulations compliance
- Design complexity
Why Choose BR Building Services for Your Extension?
Proven Track Record
With over 35 years of building experience in Dublin, Brian Roche and the BR Building Services team have successfully completed extensions and renovations across South Dublin. Our reputation is built on quality craftsmanship, reliable delivery, and satisfied customers.
Local Expert Knowledge
Based in Ballinteer, Dublin 16, we understand the unique characteristics of South Dublin properties. We're familiar with local planning authority requirements, building regulations interpretations, and the challenges specific to this area's architecture.
Professional & Fully Insured
BR Building Services is CRO registered (232079) and VAT registered (IE5148999H). We carry full professional insurance covering all aspects of construction work, protecting you and your investment.
Transparent Communication
We believe in clear communication throughout every project. You'll receive detailed quotes with no hidden costs, regular progress updates, and direct contact with Brian and the team during your extension.
Comprehensive Service
From initial consultation through final handover, we manage every aspect: design guidance, planning support, building regulations compliance, skilled construction, and project management. You have one point of contact for your entire project.
Quality Craftsmanship
Our extended team of skilled tradespeople—structural engineers, bricklayers, carpenters, plumbers, and electricians—deliver quality workmanship that lasts. We use quality materials and proven building techniques.
House Extensions Across South Dublin
BR Building Services provides expert house extensions throughout South Dublin and North Wicklow. Whatever your location in the greater Dublin area, we're here to help extend your home.
Areas we serve:
If you're in any of these South Dublin areas and considering a house extension, contact us for a free consultation. Brian Roche and the team will visit your property, understand your vision, and advise on the best extension solution for your needs.
Frequently Asked Questions About House Extensions
Do I need planning permission for a rear extension Dublin?
Most single storey rear extensions up to 40 square meters are exempt from planning permission in Ireland under exempt development rules. Extensions larger than this or two-storey extensions typically require planning permission. We recommend verifying with your local authority or consulting with BR Building Services for your specific property.
How much does a house extension cost in Dublin?
House extension costs in Dublin vary based on size, type, and specifications. Single storey extensions typically range from €30,000 to €80,000+, while larger or two-storey extensions cost more. Contact BR Building Services for a detailed quote tailored to your project and location in South Dublin.
How long does a house extension take to build?
A typical single storey rear extension takes 8-12 weeks from start to completion, depending on size and complexity. Planning permission (if required) adds an additional 8-12 weeks before construction begins. BR Building Services provides detailed timelines during the consultation phase.
What is exempt development for house extensions?
Exempt development refers to building work that does not require planning permission. Typically, single storey rear extensions up to 40 square meters are exempt, providing they meet specific criteria (single storey only, maximum height of 4m to roof ridge, and other requirements). Always verify your project qualifies.
How much value does a house extension add to my property?
A quality extension typically adds 15-25% to your property's value, depending on the extension type, finish quality, and local property market. In competitive South Dublin markets like Ballinteer and Dundrum, extensions provide excellent return on investment.
Do I need structural engineer for my extension?
Most extensions require structural engineering. Building regulations require structural design for extensions affecting existing structures. BR Building Services coordinates with qualified structural engineers ensuring all designs meet Irish Building Regulations and are safe.
What is party wall act for extensions Dublin?
While Ireland doesn't have a direct Party Wall Act like England, extensions built near boundary walls require careful planning and may require neighbor notification. BR Building Services advises on these requirements and manages the process professionally.
Can I get a free quote for my house extension?
Yes! BR Building Services offers free site visits and consultations. Contact us on 086 856 7077 or email brbuildingservices1@hotmail.com. We'll assess your property, discuss your vision, and provide guidance on options and costs.
