02922 362904


WELCOME TO LSJ Building & Construction

LSJ Building & Construction are a well-established firm that offers friendly reliable advice and service. We work within a 50-mile radius of Cardiff.

Get In Touch

We offer professional building services across South Wales.
Get in touch with us for a quote today – 07875752046


We can undertake every aspect of new build developments, taking the project from conception through to completion, including all the finishing touches.


If extra living space is what you are after, our multi-skilled builders have created smart, spacious extension features for homeowners.


We can help you bring a new lease of life to your property through complete renovations, whatever style you want to achieve be it modern or contempary.

We offer professional building services throughout South Wales & the surrounding areas.

We pride ourselves on the amount of repeat business we garner from clients who we have completed works for to the highest of standards.

Our current projects range from porch extensions to complete refurbs and house builds.

Are you ready to start your next project?

Contact us today for a FREE quote or advise on your building project, we are happy to help.

LSJ Building & Construction Service

At LSJ Building & Construction, we provide our customers with a wide range of building services. Based in Cardiff, our highly skilled team work on projects all over South Wales.

With a wealth of experience in the building trade, our company has built up an extensive portfolio of happy customers. We carry out all aspects of building work, from loft conversions and extensions, to property maintenance and refurbishments. Every job is approached in a polite and professional manner by our team of professional and fully qualified tradesmen.

Why choose us?

  • Professional and reliable services
  • Highly skilled and friendly team
  • High-quality workmanship
  • Competitive prices
  • Personalised services