Property extensions and garage conversions
in Cardiff and South Wales

Loft conversions

Reclaim that lost space in your property.

We can help develop a well-crafted living space that adheres to current legislation and considers the structural integrity of your property.

Extensions and renovations

Making better use of your property.

From foundations to flooring, we can provide high quality property extensions and garage conversions offering you a greater, more accessible living space.

Commercial contracts

For extensions, conversions, renovation and refurbishment in Cardiff and South Wales

029 2062 1376

Renovation and refurbishment

Mixing old and new...

Our team includes fully qualified tradespeople who are fully specialised in every aspect of home refurbishment, renovation and improvements.

New builds

All designed to suit you...

We're here to make your dream home a reality.

Building your own property can be daunting - let us help you to make it happen.

Planning to completion

Design and planning...

From architectural design to access, Cosgrove Builders will help plan and foresee any obstacles throughout your building development.