You've got questions, and we've got answers

Should you extend your home or move?

Is the space at home not working for the way you want to live?

Will the cost of an extension be a sound financial investment?

Home extension designs follow a consistent design process.

Central to that is what you want, why you want it and your overall vision for your extension.

Home extension designs to suit your lifestyle.

Are you considering extending your home to benefit from the extra space as your family grows?

Or maybe you've always wanted a second living room to watch TV in?

Maybe your dream is to have a home office that's bright, airy, and spacious and allows you to work in comfort?

Whatever the reason for your extension, Robert Gilmour Architects can take your ideas and turn them into reality.

Cost-effective and hassle-free design process.

Did you know that an extension or reconfiguration of your home can be a substantial money-saver instead of moving?

Extending or reconfiguring your home can be a daunting and potentially complicated task.

Budget, planning permission, building supplies, design, airflow, lighting; the list is endless.

And that's where Robert Gilmour Architects can step in and manage the process and make it hassle-free for you.

Flexible and tailored service.

We know that every client has their own particular set of circumstances.

As a result, you'll enjoy a flexible, personalised service that works for you and caters to your personal taste.

Timeless designs.

As Northern Ireland's 'go-to' architects, you'll enjoy timeless designs that work for you.

We'll find the perfect balance between functionality, aesthetics and individuality.

No more headaches.

Say goodbye to complex planning policies; we'll use our decade of experience to simplify and speed up the process.

And we'll ensure you receive the highest quality of service delivered on time and on budget.

Why use Robert Gilmour Architects?


Architectural design that's fit for purpose.

Professional advice

Advice you can trust that's tailored to your needs.


We'll deliver on time and on budget. 

Save money

We'll ensure you get the best value.

Here when you need us

We're with you every step of the way.

Timeless designs: 

Create a beautiful setting for everyday life.

360-degree management

Quality design, sensible construction, and rigorous management.


We have nearly 20 years of experience.

I worked with Robert Gilmour Architects on the renovation and extension of my house in Belfast. From start to finish the experience was overwhelmingly positive. They brought a highly-creative, problem-solving approach which smoothed the way for everything; design, planning-permission, building control etc. and overseeing a beautiful project with great care and attention to detail. Would not hesitate in recommending them.

Sara Flynn