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We are a local family business of  Specialist Builders serving the County Down area


Growing our business through a reputation of excellence..


" Warner and his team did a full house renovation and extension for us , the house needed totally gutted rewired, re-plumbed, every wall re-plastered, new ceilings, bathrooms and then the extension.

The standard of work was fantastic, everyone who doesn't know thinks it's a new build! Warner was brilliant from start to finish, nothing was too much trouble. Very hard working, was on site every day before 8am and takes a lot of pride in his work, and on top of it all a really nice bloke. I wouldn't hesitate to recommend him"




Anthony Cash



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Over the space of nearly 8 years we have hand picked some of the best tradesmen across County Down allowing us to handle project of all sizes.

We are proud to provide customers the peace of mind that every aspect from plans to completion is handled by our team giving you a personal service that flows flawlessly from start to finish and the man power to have your job finished in a timely manner.

Working alongside some of the top Architects throughout County Down & Belfast, together we turn unused space into stylish extensions, create open plan and spacious living areas or even additional bedrooms. 

We work tirelessly throughout as while we appreciate as much as you look forwards to your finished project, nobody likes the dusty construction site in between while our team get to work.


We are fully licensed with Public & Employers liability insurance cover of £10 million. As a professionally vetted member of the Federation of Master Builders, you can be assured your project is handled by a team of competent builders with great attention to detail

While we have grown our team to a size capable of dealing with all types of work, we heavily focus on ensuring we are competitively priced and continue to have the same attention to detail that has given us its success from the day we started out.

Call Warner Today on 07540475953 or complete an email enquiry form below

One Team from start to finish...

W J Building & Joinery was established in 2012, our team has continued to grow as a reflection of our quality of work. We have specialists taking on all aspects of work from



Kitchen & Bathroom Installation

New Builds

Loft Conversions


Your project truly is undertaken by Warner Johnston Building & Joinery from start to finish.

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