Who We Are

Welcome to Castellum

Founded in 2003, Castellum is an award winning prime construction company offering both a turnkey Design and Build solution and outstanding levels of service as a Main Contractor. We build exceptional homes for discerning clients, architects, and consultants. We also develop and sell our own projects. We cover London and the South Western Home Counties from our head office in Surrey and Gloucestershire, Oxfordshire and Wiltshire from our office in the Cotswolds.

What Our Clients Say

The Main Contractor by which all others should be judged. Nothing ever too difficult – team players.
J. Hunter
Founder of Tenhurst.
Some of you may know that I work with contractors from the largest down, and I can honestly say, if given a choice, Castellum are now first on the list. If you are building something, give them a call.
Jayne McGivern
Board Member of Skanska.
From the bottom of my heart, you guys deserve this. The quality of my home is impeccable. Kudos to you and the team. The biggest award is that I am entirely satisfied!
Private client, Surrey
Surrey, On hearing that his home had won an award.