A concrete frame under construction with tower cranes

We build what cities stand on.

Est. 1994 — Leeds

Commercial · Civic · Infrastructure

Offices, hospitals, schools and bridges, built on programme by people we employ directly.

Offices, hospitals, schools and bridges, built on programme by people we employ directly.

See our projects

  • Commercial

  • Healthcare

  • Education

  • Residential

  • Industrial

  • Infrastructure

  • Civic

  • Commercial

  • Healthcare

  • Education

  • Residential

  • Industrial

  • Infrastructure

  • Civic

A.01 — Who we are

A.01 — Who we are

Caisson is an employee-owned contractor. We take on a small number of difficult buildings each year, put our best people on them, and stay until the last snag is closed.

Caisson is an employee-owned contractor. We take on a small number of difficult buildings each year, put our best people on them, and stay until the last snag is closed.

Caisson is an employee-owned contractor. We take on a small number of difficult buildings each year, put our best people on them, and stay until the last snag is closed.

31

Years building

412

Projects delivered

£1.9bn

Contract value

1,240

Days without lost time

A.02 — Selected work

Recently handed over.

All projects

Harbour Exchange

Commercial

Harbour Exchange

£84m

Bristol

2025

Northgate Medical Centre

Healthcare

Northgate Medical Centre

£46m

Leeds

2024

Linden Row Apartments

Residential

Linden Row Apartments

£38m

Manchester

2025

Kestrel Logistics Hub

Industrial

Kestrel Logistics Hub

£29m

Doncaster

2023

A.03 — What we do

Five trades, one team.

Two site engineers reviewing drawings

All services

S.01

S.01

Preconstruction

Cost planning, buildability reviews and programme modelling before the design is fixed, when changes are still cheap.

S.02

S.02

Design and build

Single-point responsibility from concept to keys. Our design managers sit beside the architects, not across the table.

S.03

S.03

Main contracting

Traditional and two-stage contracts delivered with our own site teams and a supply chain we have used for decades.

S.04

S.04

Civil and structures

Groundworks, concrete frames, steel and bridges, self-delivered by a directly employed civils division.

S.05

S.05

Fit-out and refurbishment

Live-environment work in hospitals, schools and offices that cannot close while we build.

A.04 — How a job runs

Four phases, no surprises.

Plan

Phase 01 / 04

Caisson method

Plan

Weeks 0–12. Cost plan, programme and every long-lead package agreed before anyone breaks ground.

Weeks 0–12. Cost plan, programme and every long-lead package agreed before anyone breaks ground.

Plan

Phase 01 / 04

Caisson method

Plan

Weeks 0–12. Cost plan, programme and every long-lead package agreed before anyone breaks ground.

Structure

Phase 02 / 04

Caisson method

Structure

Foundations, frame and floors, built in zones so following trades are never waiting for a crane.

Foundations, frame and floors, built in zones so following trades are never waiting for a crane.

Structure

Phase 02 / 04

Caisson method

Structure

Foundations, frame and floors, built in zones so following trades are never waiting for a crane.

Envelope

Phase 03 / 04

Caisson method

Envelope

Facade and roof installed early. A watertight building is a predictable one.

Facade and roof installed early. A watertight building is a predictable one.

Envelope

Phase 03 / 04

Caisson method

Envelope

Facade and roof installed early. A watertight building is a predictable one.

Handover

Phase 04 / 04

Caisson method

Handover

Commissioning, training and a defects list closed within four weeks of completion.

Commissioning, training and a defects list closed within four weeks of completion.

Handover

Phase 04 / 04

Caisson method

Handover

Commissioning, training and a defects list closed within four weeks of completion.

A site team walking across a slab, seen from above

A.05 — Safety

Everyone home, every day.

How we work

A.06 — From a client

A.06 — From a client

“They told us in week six that the steel would be late, and what they had already done about it. We opened on the day we had printed on the invitations.”

“They told us in week six that the steel would be late, and what they had already done about it. We opened on the day we had printed on the invitations.”

“They told us in week six that the steel would be late, and what they had already done about it. We opened on the day we had printed on the invitations.”

Ruth Adeyemi

Estates Director, Northgate NHS Trust

Create a free website with Framer, the website builder loved by startups, designers and agencies.