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Welcome to

Warner Johnston

 Building & Joinery


A team of specialist builders based in County Down

Warner Johnston Building & Joinery

 provide services in all aspects of the domestic building industry. Catering for projects of all sizes.



Some of our common projects involve:

Internal Joinery

Loft Conversions 

House Extensions 

 Property Renovations

Garden Offices, Cabins  &  Sun rooms

Our experienced team has the ability and knowledge to ensure your project is completed to the highest standard. The quality we produce is visible in all our projects regardless of the project's size and complexity.

As one of the leading building companies in County Down our goal is to provide seamless management of your project and an exceptional final result

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