Corebase Extensions & Groundwork Ltd

I’m William, the founder and proud owner of our Lancashire-based construction company.

After years of hands-on experience in the trade, I’ve built a skilled and reliable team who bring both practical know-how and formal training to every project.

Our lads aren’t just experienced — they’ve spent years in college and trade courses, and every one of them holds a CSCS card or certificate, so you can be confident that no cowboys will arrive on your site.

We also believe in giving people a start in life, taking on apprentices and labourers to help the next generation build solid careers in construction.

We work on both private and commercial properties, covering a wide range of services — though our main focus is on extensions, loft conversions, and driveways.

We also take on emergency jobs, offering fast and dependable service when it matters most.

Every project we take on is completed with care, precision, and pride.

We don’t just focus on the work — we focus on the relationship with our customers, making sure your needs are listened to and your vision is brought to life.

And when the job’s done, we always clean up before and after, because we understand it’s not just a site — it’s your home.