The People Behind Every Build

The People Behind Every Build

Formis is a team of architects, engineers, and craftsmen who believe a great building starts with a conversation — and ends long after handover.

Formis is a team of architects, engineers, and craftsmen who believe a great building starts with a conversation — and ends long after handover.

320+

Projects Completed

320+

Projects Completed

$2.1B

Value Delivered

$2.1B

Value Delivered

18yr

Excellence

18yr

Excellence

EST.

2006

Building trust one project at a time

Site and engeneer

Our Story

Thirty Years of Work That Speaks for Itself.

Formis was founded on the belief that construction is not just engineering; it is the art of shaping how people live, work, and feel within a space. Every beam, finish, and threshold is a deliberate decision.

From concept to handover, we work as an integrated team of architects, engineers, and master craftsmen, handling every phase with the precision and transparency you deserve.

We started with a single residential renovation in Islington. Eighteen years and 320 projects later, the standard has never changed.

Tower building

What We Stand For

The Principles That Guide Every Decision

Precision Over Speed

We never rush a detail. If a finish isn't right, we redo it. The schedule exists to serve the project — not the other way around.

Radical Transparency

Fixed prices, weekly reports, no hidden costs. You will always know exactly where your money is going and why.

One Team, One Contract

No subcontractor roulette. Our architects, engineers, and site teams work together under a single contract.

Accountable Always

A named director is reachable on every active project — not a site manager, not a call centre. If something goes wrong, we say so immediately, explain why, and present a solution before you ask for one.

Built to Last

FSC-certified timber, low-VOC materials. We build for where regulations will be not where they were.

Our Team

The People You'll Actually Work With

James Calloway

Founder & Director

18 years in residential and commercial construction. Named director on every project over £500K.

Sarah Reynolds

Head of Architecture

ARB-registered architect with 12 years in design-build. Leads all planning and specification.

Marcus Pelletier

Site Operations Director

Ex-civil engineer managing all site programmes and trade coordination across active builds.

Layla Hassan

Interior Design Lead

Specialist in bespoke joinery, material specification, and FF&E procurement for luxury fit-outs.

Our History

Eighteen Years of Raising the Standard

2006

Founded in Islington

James Calloway completes his first residential renovation on Barnsbury Street.

2006

Founded in Islington

James Calloway completes his first residential renovation on Barnsbury Street.

2011

FMB Membership Awarded

Awarded After five years of consistent delivery, Formis is accepted as a full member of the Federation of Master Builders.

2011

FMB Membership Awarded

Awarded After five years of consistent delivery, Formis is accepted as a full member of the Federation of Master Builders.

2016

Expanded to Commercial

Formis takes on its first commercial fit-out: a 4,200 sq ft office refurbishment in Clerkenwell.

2016

Expanded to Commercial

Formis takes on its first commercial fit-out: a 4,200 sq ft office refurbishment in Clerkenwell.

2024

Meridian Tower Handover

$4.2M commercial new build completed on schedule. Our largest single project and our most reviewed to date.

2024

Meridian Tower Handover

$4.2M commercial new build completed on schedule. Our largest single project and our most reviewed to date.

Home renovation

Get In touch

Get In Touch

Ready to Build Something Lasting?

Ready to Build Something Lasting?

Book a free site assessment. No obligation — just a conversation about your project and what's possible.

Book a free site assessment. No obligation — just a conversation about your project and what's possible.

Home renovation

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