CG Garden Rooms

Single Story Extensions Northern Ireland & Ireland

Single Story Extensions Built for Your Home

Our single story extension builds in Northern Ireland & Ireland are made to match your home and your needs. Whether you want a bigger kitchen, dining space, or living room, we can help.

We focus on:

Strong and lasting builds
Clean and modern design
Practical layouts that maximize practical space, ensuring your extension offers the most usable living area possible
Energy-efficient spaces

Every extension is planned with care to make sure it works for your daily life

Benefits of Single Storey Extensions in NI & Ireland

A single storey extension brings a host of advantages to homeowners looking to enhance their property. By expanding your living space, you can enjoy a more open and flexible home environment – ideal for growing families or those who love to entertain. Many homeowners find that a single storey extension not only improves day-to-day comfort but also boosts property value, making it a smart investment for the future.

With the average cost of a single-storey extension ranging from £1,500 to £3,000 per square metre, you can tailor your project to suit your needs and budget. Most single storey extensions are designed to blend seamlessly with your existing property, ensuring a cohesive look and feel. Whether you’re adding a new kitchen, dining area, or family room, the cost of a single-storey extension is often outweighed by the benefits of increased space and improved functionality. Plus, most single storey extensions can be completed in just a few months, allowing you to enjoy your new space sooner rather than later.

Reliable & Qualified Experts

We consist of a group of highly qualified tradesmen and are now very proud specialists in insulated single story extensions, serving all across Ireland.

Quick Turnaround

We aim to have our single story extensions completed as quickly as possible to minimise disruption for you and let you enjoy your new space as quickly as possible.

Competitive & Flexible Prices

Confirm your booking with a deposit, then then make part-payment on day one of installation followed by final payment on completion day.
*Finance options now available

How It Works

Introduction

Learn more about what CG Joinery has to offer, get in contact via our social media pages, email or phone to discuss your options. We also have a Garden Showroom based just outside of Newry, where you can visit and check out our quality of work.

Book

We offer an initial free quote upon request and will discuss the best style and size suited for your needs. Once agreed, we will confirm your booking with a 10% deposit, and then process to collect 50% payment on day one of the installation, following 40% on completion day.
*Finance options available*

Install

We aim to have your garden room completed within 2-5 days, depending on specific client requirements. Our insulated garden rooms are built on site, from initial phase to completion.

Enjoy

Relax and enjoy your sustainable, low maintenance room, with peace of mind as we offer 10 month aftercare warranty, should you face any issues.

Expand Your Living Space with a Custom Single Story Extension

At CG Joinery, we specialise in crafting high-quality, fully-finished single-story extensions that seamlessly blend with your existing home. Whether you need extra space for a larger kitchen, a new family room, or a quiet home office, our extensions are designed to offer maximum comfort, energy efficiency, and style. With comprehensive insulation, double-glazed windows, electric radiators, and fully managed electrical installations, every detail is tailored to create a functional and inviting space.

Our team handles every aspect of your project—from initial consultation to final touches—ensuring that your extension meets the highest standards in both quality and aesthetics. We work closely with building control authorities to streamline the process, so you can relax knowing your extension is fully compliant and built to last.

Get in Touch Today for Your Free Consultation and Quote!

Why Choose CG Joinery for Your Single Story Extension?

Choosing CG Joinery means investing in quality craftsmanship and expert guidance. Here’s why homeowners across Ireland trust us for their single-story extensions:

Fully Customisable Design and Fixtures
We know that every home and homeowner has unique needs. Our single-story extensions are fully customisable, allowing you to select from a range of design options, fixtures, and finishes. From energy-efficient electric radiators to double-glazed windows and modern lighting installations, we create a space that meets your functional and aesthetic preferences.
Expert Insulation for Year-Round Comfort
Each extension is expertly insulated to retain heat, creating a comfortable environment that reduces energy costs. Our insulation keeps the space warm in winter and cool in summer, so you can enjoy your new room regardless of the season.
Comprehensive Electrical and Heating Installations
We provide complete electrical installations, including lighting, sockets, and power points, all managed by certified professionals. Additionally, our electric radiators and heating systems are installed to ensure consistent, efficient warmth throughout the space.
Building Control Compliance
Our team manages all aspects of building control for your extension, ensuring that every detail complies with local regulations. We handle permits and inspections, providing a hassle-free process that ensures your extension is safe, legal, and structurally sound.
High-Quality, Durable Construction
We use only premium materials, guaranteeing a sturdy, long-lasting extension that complements your home. Every project is completed with attention to detail, resulting in an extension that feels like a natural part of your property.

Single Story Rear Extension

A single story rear extension is one of the most popular choices. It gives you more space at the back of your home and opens up your living area.

This is great for:

Open-plan kitchens
Family rooms
Dining areas

A single story rear extension is often considered a small extension, especially when designed as a lean-to with a simple roof. For these types of projects, average prices typically range from £1,500 to £2,500 per square metre, depending on the size and specification.

It helps bring in more natural light and makes your home feel bigger.

Single Story Side Extension

A single story side extension is a smart way to use unused space at the side of your home.

A side return extension is a popular form of house side extension, especially for Victorian properties, making use of narrow alleyways to create additional living space. House side extensions are a cost effective way to maximize your home’s footprint, providing extra rooms or multi-purpose areas without the expense of larger projects.

It works well for:

Utility rooms
Extra storage
Home offices
Larger kitchens

We design each build to make the best use of your space.

Reliable and Qualified Experts

CG Joinery is comprised of a skilled team of qualified tradesmen who specialise in single-story extensions. With years of experience serving clients across Ireland, we are committed to delivering excellence in every project. Our expertise allows us to manage each phase of the extension process with precision and care, resulting in a space that you and your family will enjoy for years to come.

Benefits of a CG Joinery Single Story Extension

Adding a single-story extension is one of the best ways to enhance your living space and increase the value of your home. Here are some of the key benefits:

Additional Living Space
A single-story extension provides versatile space that can be used as a family room, larger kitchen, home office, or guest bedroom. This extra room gives you and your family more space to live, work, and relax.
Energy Efficiency and Comfort
With premium insulation, double glazing, and efficient heating, your extension will stay comfortable year-round, reducing the need for additional heating or cooling.
Customisable Layout and Fixtures
Our extensions are designed to match your unique style and needs, with options for layout, fixtures, and finishes that suit your lifestyle.
Enhanced Property Value
A well-designed, high-quality extension adds value to your property, making it a worthwhile investment if you’re considering future resale.

Frequently Asked Questions

Cost of a Single Story Extension UK

The cost of single story extension projects depends on:

Size of the extension
Materials used
Design and layout
Site access and groundwork
Labour costs and material costs

How long does it take to build a single-story extension?

Our aim is to complete your extension as quickly as possible, typically within a few weeks, depending on the size and complexity of the project. We work efficiently to minimise disruption to your daily life.

Do I need planning permission for a single-story extension?

Single-story extensions often fall within permitted development rights, but requirements can vary. We recommend checking with your local authority or consulting with our team for guidance on this matter.

What type of heating and electrical options are available?

We offer a range of options, including electric radiators, underfloor heating, and comprehensive electrical installations to suit your specific needs.

How do I book a consultation?

Simply contact us via phone or email to book your consultation. One of our friendly team members will be happy to discuss your project and provide guidance on the next steps.

Are your extensions guaranteed?

Yes, all our work is backed by a guarantee to ensure long-lasting quality and your satisfaction.

Need more info?

Give us a call to discuss any requests you have, we would be glad to assist and can provide competitive quotes for our services.

Single Story Extensions Northern Ireland & Ireland​