Us And Our Ethos

Castellum offers both a turnkey Design and Build solution and Main Contracting. The management team has extensive construction experience, but also expertise with project and operational management. We strive to bring value to our clients and deliver projects of the highest quality by uniting these skills. We recognise the importance and appeal of discretion and each project is managed at Board Director level. Projects range from new builds, to agricultural conversions and the refurbishment and extensions of existing homes, including listed buildings and country house estates.
We focus on delivering high quality, intelligent and creative solutions. This, combined with our energy, enthusiasm and attention to detail is paramount to our business ethos. Our formula is simple; we deliver projects that both we and our clients are proud of.

Our Chosen Charity


CHYP Charity

Wording Our Cotswold office are also keen to support CHYP (Cirencester Housing for Young People, a small local charity that provides accommodation for vulnerable young people who find themselves homeless through no fault of their own.

Balls to Africa

We are proud to support Balls To Africa, a charity that helps children play. We collect up second hand balls and send them to where they are needed.

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.