
House Extensions & Alterations
Practical designs for single-storey, two-storey and property alterations.
House Extension Design in Merthyr Tydfil and South Wales
A well-designed extension can provide the additional space your family needs while improving how your home looks, feels and functions.
Utopia Design creates practical, considered designs for house extensions and property alterations throughout Merthyr Tydfil and South Wales.
Create More Space in Your Home
Every home and household is different. You may want a larger kitchen, an open-plan living area, an additional bedroom, a home office or a better connection to the garden.
We begin by understanding how you currently use the property, what is not working and what you would like the finished space to achieve. We then develop a design that responds to your home, available space and budget.

We can provide design support for:
- Single-storey rear extensions
- Two-storey extensions
- Side extensions
- Wraparound extensions
- Kitchen and dining extensions
- Additional bedrooms
- Utility rooms
- Home offices
- Internal alterations
- Open-plan living spaces
- Porches and entrance alterations
- Accessible home improvements
Design, Planning and Building Regulations
We can support your extension from the initial site survey and concept design through to planning application and Building Regulations drawings.
The service can include existing and proposed plans, elevations, sections, technical details and the information required for the relevant application stage.
Designed to Complement Your Property
A successful extension should feel like a natural part of the home. This does not always mean copying the existing building exactly. A carefully designed contemporary addition can work alongside a traditional property when its scale, materials and proportions are properly considered.
Our approach balances appearance, practicality, natural light, circulation, storage and buildability.
Start Planning Your Extension
If you are considering extending or altering your home, contact Utopia Design to arrange an initial conversation about your property and ideas.

Considering a Similar Project?
Get in touch to talk through your ideas and how Utopia Design can help bring them to life.
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