Home - GJ Constuction South West

Welcome to GJ Construction

Formerly known as BM Jones, GJ Construction is a family run business proudly serving Launceston and the surrounding areas. With decades of experience, we offer expert construction services including bespoke new builds, home extensions, renovations, groundworks, fencing, and landscaping. Our reputation is built on quality craftsmanship, reliability, and a personal approach to every project, no matter the size.

Whether you’re planning a new home, a renovation, or simply need expert advice, we’re here to help.

Customer Reviews

Wooladon Estate

We have had the pleasure of working with Gareth and his team on numerous building projects at Wooladon Estate over the years, and their work has consistently exceeded our expectations. From the outset, Gareth approaches every project with an exceptional level of attention to detail and precision. His commitment to getting things right the first time sets the tone for the entire team, and the results speak for themselves. Communication throughout every stage of the work has been clear, timely, and honest. The professionalism, reliability, and genuine care they bring to their work makes them a standout team. Beyond the quality of their craftsmanship, what truly sets Gareth and his team apart is their pride in their work and their integrity. Nothing is too much trouble, and they always go the extra mile to ensure a flawless finish. We wouldn’t hesitate to recommend Gareth and his team to anyone looking for top-quality building work done by people who genuinely care.

Mr & Mrs R

Barn Conversions

Gareth and the team came to me, and their advice and help was great as I wasn't sure how i wanted my garage and garden to look. The quality of the work and finished work is amazing. I would highly recommend for work, detail and advice.

Mrs J

Barn Conversions

Gareth and his team completed a large-scale renovation project in our old farmhouse in 2016. In our experience they were trustworthy, genuine, efficient, and hard working. When a problem comes along, Gareth thinks outside of the box and comes up with solutions. We found they adapted easily when there was a change of plan. The team are highly skilled and work to a high-quality finish. Gareth was also very patient and helpful when I couldn’t make my mind up!

Mrs G

I have been using Gareth and family as my handy man and builder for over 20 years. They have got an amazing imagination, vision and attention to detail. I tell them what I would like and they come up with a plan and deliver better than what I had hoped for whether it be a small repair job, a barn conversion or a large kitchen extension.

Mr & Mrs H

5 Stars – Highly Recommended! I recently had a single storey extension built at the back of my house, and I couldn’t be happier with the results. From start to finish, the team were professional, reliable, and a pleasure to work with. They kept me informed throughout the process, always showed up on time, and maintained a clean and safe worksite. The quality of the workmanship is outstanding—every detail was completed to a high standard, and the final result has completely transformed my home. The extension blends perfectly with the existing structure and feels like it’s always been part of the house. What really stood out was their attention to detail and commitment to customer satisfaction. They listened carefully to what I wanted, offered helpful suggestions, and made sure everything was exactly right before finishing up. I would not hesitate to recommend this company to anyone looking to carry out building work. A fantastic experience from start to finish!

Mr & Mrs W

We contacted Gareth through a recommendation for him to construct our new bedroom extension, to include a “re-vamp” of the existing bedroom into a shower and dressing area to join up to the new extension. Gareth clearly understood our needs and requirements, and we received the same attention to detail as if we were having a new property built. The whole building process was conducted in a very professional manner, with a clean tidy, friendly team of workman with limited impact on us. In fact, we missed them when they left. So far as we are concerned, we are delighted with the quality and finish of the rooms, especially the new bedroom which exceeded our expectations. Nothing was too much trouble and certainly no chasing involved. We chose the fixtures and fittings whilst the build work was ongoing. Gareth was quite happy for us to do that. I wouldn’t hesitate in recommending them for your new build, extension or even putting a new fence which he did for us when our existing one was damaged in the storms.