There’s a moment in every homeowner’s journey when the walls start to feel like they’re closing in. Maybe the kids are getting bigger, you’ve started working from home, or your once-perfect kitchen now feels like a daily battleground. But before you start browsing Daft or dreaming of relocating, here’s a thought: what if the home of your dreams is the one you already live in?
That’s the ethos behind Greenoak Construction, a local name synonymous with high-quality house extensions in Dublin. Whether it’s a 3-metre kitchen extension in Knocklyon or a two-storey home expansion in Rathfarnham, Greenoak helps families unlock the true potential of their homes — without uprooting their lives.
From consultation to completion, Greenoak offers a full suite of home extension services in Dublin, combining practical experience with creative design, sustainable practices, and neighbourly care.
Why Home Extensions in Dublin Make More Sense Than Moving
It’s no secret that the Dublin property market can be a bit, well, daunting. The idea of finding the perfect home in your price range, in your ideal neighbourhood, and without months of upheaval? Let’s just say it’s a big ask.
That’s why more homeowners across South Dublin, especially in areas like Knocklyon and Rathfarnham, are choosing to stay put and invest in home extensions that suit their current and future needs. It’s about reconfiguring your space to reflect how you actually live — and doing so with confidence, thanks to a trusted local team like Greenoak.
With the right extension, you can:
- Add light and flow to cramped kitchens and living spaces
- Create much-needed home offices, playrooms or guest suites
- Expand vertically with 2 storey extensions or transform bungalows
- Boost your property’s value while enhancing daily comfort
Thinking of building an extension? Explore your options with Greenoak
A Builder Dublin Families Trust: Greenoak’s Full-Service Extension Process
Greenoak isn’t just about laying bricks — they’re about building smarter, better spaces that feel like a natural evolution of your home. Their process covers every stage, from first sketch to final sign-off.
Here’s how they do it:
- Consultation & Design Brief – They’ll visit your home, chat through your needs and Wishlist, and offer honest, creative suggestions grounded in experience.
- Planning & Compliance – No need to stress about permits — Greenoak handles applications, liaises with local authorities, and ensures your build is fully compliant with regulations.
- Construction – Their in-house builders, electricians, and trades deliver quality work on time and with minimal disruption. That includes dust management, tidy sites, and respectful team members.
- Snag-Free Finish – From high-spec insulation to polished skirting boards, they don’t leave until the work is flawless and you’re delighted.
Learn more about Greenoak’s extension building process
Tailored House Extension Designs to Suit Every Dublin Home
Greenoak has delivered home extensions across Dublin of every shape and size. Their design team works closely with clients to create layouts that enhance both functionality and feel.
Some popular styles include:
- Rear kitchen extensions with open-plan dining and living zones
- Side return extensions in terraced homes, making narrow spaces usable
- Modular house extensions and timber frame builds for rapid installation
- Two-storey extensions adding bedrooms, bathrooms, and breathing room
- Glass room extensions to blur the line between indoors and out
Whether you live in a 1980s semi or a period bungalow, the team understands the importance of designing for your home’s existing character and your personal taste. View completed projects in Knocklyon and Rathfarnham
Cottage Extensions & Bungalow Conversions: Where Character Meets Comfort
Dublin is full of charming older homes that, while lovely, often need a bit of coaxing into modern-day comfort. Greenoak has vast experience working on bungalow renovations, traditional cottage extensions, and old cottage with modern extension styles.
They approach each project with sensitivity — preserving heritage details where possible, and adding bright, airy layouts that breathe new life into tired spaces.
Recent work includes:
- A Rathfarnham cottage extended with a vaulted timber-frame kitchen-diner.
- A Knocklyon bungalow reconfigured with a wraparound extension and garden-facing living room.
- A farmhouse renovation blending original stone with contemporary glass and steel.
The result? Spaces that feel grounded in history but perfectly suited to modern life.
Energy-Efficient House Extensions: Build Bigger and Smarter
Extending your home is the perfect opportunity to upgrade your insulation and energy systems — and Greenoak makes that easy.
As a specialist in retrofit insulation in Dublin, they’ll help you make smart choices around:
- Attic insulation (including spray foam and rafter solutions)
- External wall insulation for better thermal retention
- Underfloor and flat roof insulation
- Airtightness, ventilation, and heating system compatibility
With grants available for many energy upgrades, Greenoak also supports clients in accessing SEAI retrofit funding. Read more about insulation and retrofit services
What Does a Home Extension Cost in Dublin? Greenoak Keeps it Clear
One of the biggest worries for any renovation is cost — and rightly so. Greenoak understands the importance of financial clarity, offering clear, phased estimates that account for your goals and your budget.
Typical figures include:
- 3 metre rear kitchen extension: Starting around €50,000
- Two-storey extension with bathroom: From €100,000+
- Extension cost per sqm in Dublin: €2,000–€2,500
- Modular and timber frame options: More budget-flexible and faster to complete
Each quote is broken down by phase, and Greenoak will help you make value-led decisions — whether that means choosing clever storage over custom joinery, or phasing out certain features. Request your tailored quote or book a site visit
Builders in Dublin with Local Knowledge and a Loyal Client Base
When it comes to finding a builder in Dublin, there’s a reason Greenoak stands out. Their work speaks for itself — and so do the neighbours.
Their projects in Knocklyon, Rathfarnham, Terenure, and Churchtown have earned them a reputation for being:
- Punctual and professional
- Communicative and courteous
- Detail-focused with strong aftercare
Many of their clients are referrals or repeat customers — a testament to the relationships they build alongside their homes. Meet the Greenoak team and explore their local ethos
Let’s Bring Your Dream Home to Life — Together
A house extension isn’t just a project — it’s a new chapter. Whether you’re dreaming of a garden-facing kitchen, an extra bedroom, or a full home transformation, Greenoak Construction can help you shape it from concept to completion.
You don’t have to move. You just have to build smart, with a team who cares about your home as much as you do.
Ready to begin your Dream Extension?
Book your consultation or request your free quote now →
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