About Us

At Cornish Barn Construction Ltd, we’re more than just builders — we’re a family-run Cornish business with deep roots in the countryside we serve. Based in Roseworthy, Cornwall, we’ve spent over 25 years helping farmers, landowners, and rural communities create and maintain the buildings and landscapes that keep Cornwall’s countryside thriving.

Our work covers everything from barn construction and restoration to fencing, groundwork, drainage, and agricultural maintenance — but what truly sets us apart is our commitment to quality, honesty, and long-term reliability. 

Our Story

Founded on traditional values and hard-earned experience, Cornish Barn Construction Ltd grew from a small, local operation into a trusted name across Cornwall’s agricultural sector.

Over the years, we’ve worked on projects of every size — from small domestic outbuildings and garden fencing to large-scale barn builds, lake construction, and full rural infrastructure works. Each job, no matter how big or small, receives the same attention to detail, craftsmanship, and care.

We understand the demands of working the land because we live it every day. That’s why our clients — from farmers and estate owners to homeowners and equestrian businesses — trust us to deliver practical, lasting solutions that make a real difference.

Our Approach

Our philosophy is simple:

Do it once, and do it right.

We believe in combining traditional craftsmanship with modern equipment and techniques to ensure durability, safety, and precision in every project.

From the first site visit to the final handover, our focus is on clear communication, careful planning, and dependable results — all backed by decades of hands-on experience in rural construction and land management.

Why Choose Us

• Family-Run & Local – We’re Cornish through and through, proudly serving our community and supporting local industry.
• 25+ Years of Experience – Decades of practical knowledge in construction, groundworks, and agriculture.
• Complete Rural Solutions – From barns to boundaries, we cover every aspect of rural development.
• Quality Workmanship – Built to last, every time.
• Reliable & Honest – Fair pricing, straightforward advice, and a genuine commitment to customer satisfaction.

Our Mission

To support Cornwall’s rural community by providing sustainable, reliable, and high-quality construction and maintenance services that preserve the countryside and help it thrive for generations to come.

Get in Touch

If you’re planning a project — whether it’s a new barn build, a fencing job, or full-scale land development — we’d love to hear from you. 

Cornish Barn Construction Ltd
📍 Based in Roseworthy, Cornwall
📞 07967 175876
📧 ross.trevethan@yahoo.co.uk 

Built on experience. Grounded in Cornwall.