Building the
backbone of World's
data centers.

Building the
backbone of World's
data centers.

Precision engineering for infrastructure the world runs on.

When you split the cooling, electrical, fire safety, plumbing, and building management systems across multiple contractors, you don't just split the work. You split the accountability. The gaps between their scopes are where data center projects run into trouble. OneStac was built around a different premise.

When you split the cooling, electrical, fire safety, plumbing, and building management systems across multiple contractors, you don't just split the work. You split the accountability. The gaps between their scopes are where data center projects run into trouble. OneStac was built around a different premise.

Integrated MEP delivery for mission-
critical facilities.

Integrated MEP delivery for mission-
critical facilities.
One team accountable for every system, from design through commissioning, and post-installation maintenance.

One team accountable for every system, from design through commissioning, and post-installation maintenance.

The only MEP team built exclusively for data centers.

The only MEP team built exclusively for data centers.

Most MEP contractors come to data centers as one sector among many. OneStac was built for it from the ground up.

Every vendor relationship, every engineering protocol, every commissioning standard has been developed specifically to cater for the demands of mission-critical data center infrastructure.

We are a design-led organisation.

We are a design-led organisation.

When the engineering is right from the outset, everything that follows: procurement, installation, testing, handover, runs to specification.

That is the only acceptable standard in this sector, and it is the standard we build for.

One contract. All systems.
No gaps between scopes.

In most data center builds, mechanical, electrical, plumbing and fire protection are delivered by separate contractors. Each owns their scope. Nobody owns the interfaces between them. That is where schedule delays and commissioning failures concentrate.

OneStac designs, builds and commissions all systems as one integrated package, under one engineering team and one contract.

Our Process

Precise at every stage. Seamless across all of them.

Apples in a factory conveyor belt.

Design

All MEP disciplines are modelled and coordinated through BIM before procurement begins. Systems are designed for DFMA and modular execution from the outset, so what is resolved in the model is what gets built on site.

Apples in a factory conveyor belt.

Design

All MEP disciplines are modelled and coordinated through BIM before procurement begins. Systems are designed for DFMA and modular execution from the outset, so what is resolved in the model is what gets built on site.

Shelves full of pharmaceutical products

Planning and Document management

Every project begins with a detailed execution plan covering scope, schedule, risk and resource allocation. Documentation is maintained and updated through every phase, so handover is never a scramble.

Shelves full of pharmaceutical products

Planning and Document management

Every project begins with a detailed execution plan covering scope, schedule, risk and resource allocation. Documentation is maintained and updated through every phase, so handover is never a scramble.

Shelves full of pharmaceutical products

DFMA and Modularisation

MEP systems are pre-engineered in close coordination with manufacturers and fabricated off-site in controlled environments. Skid-mounted assemblies and modular panels arrive on site ready to install, reducing site complexity and compressing delivery timelines without compromising quality.

Shelves full of pharmaceutical products

DFMA and Modularisation

MEP systems are pre-engineered in close coordination with manufacturers and fabricated off-site in controlled environments. Skid-mounted assemblies and modular panels arrive on site ready to install, reducing site complexity and compressing delivery timelines without compromising quality.

Shelves full of pharmaceutical products

Procurement and Supply Chain

Vendor qualification and equipment selection aligned to the design intent and specified standards. Long-lead equipment is planned and tracked from the start so supply chain decisions never hold up the programme.

Shelves full of pharmaceutical products

Procurement and Supply Chain

Vendor qualification and equipment selection aligned to the design intent and specified standards. Long-lead equipment is planned and tracked from the start so supply chain decisions never hold up the programme.

Beige and green Rubber Components

Installation

Site execution by our own teams. Quality hold points at each stage. Non-conformances are closed before the next phase begins.

Beige and green Rubber Components

Installation

Site execution by our own teams. Quality hold points at each stage. Non-conformances are closed before the next phase begins.

Electronic products (monitor, laptop, tablet, phone) on a table.

Commissioning

Every system is tested under real operating conditions before handover, across L1 to L6: from factory acceptance testing through site installation checks, individual system validation and integrated testing, all the way to high-load stress testing. We do not issue the commissioning certificate until the facility performs to specification.

Electronic products (monitor, laptop, tablet, phone) on a table.

Commissioning

Every system is tested under real operating conditions before handover, across L1 to L6: from factory acceptance testing through site installation checks, individual system validation and integrated testing, all the way to high-load stress testing. We do not issue the commissioning certificate until the facility performs to specification.

Electronic products (monitor, laptop, tablet, phone) on a table.

Handover

Full as-built documentation, O and M manuals and operations team training. We are not a build-and-leave organisation.

Electronic products (monitor, laptop, tablet, phone) on a table.

Handover

Full as-built documentation, O and M manuals and operations team training. We are not a build-and-leave organisation.

Electronic products (monitor, laptop, tablet, phone) on a table.

Lifecycle Support

Maintenance strategies, performance monitoring and long-term operational support for clients who want a partner beyond delivery.

Electronic products (monitor, laptop, tablet, phone) on a table.

Lifecycle Support

Maintenance strategies, performance monitoring and long-term operational support for clients who want a partner beyond delivery.

Logistics center top view