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The O’Halloran & O’Brien Group of Companies always aims to lead by example within the construction industry. Managing our energy & environmental impact is at the core of every action taken within the group.


O'Halloran & O'Brien joins #ConcreteZero, committing to buy and use 30% low emission concrete by 2025 and 50% by 2030, setting a clear pathway to using 100% net zero concrete by 2050.

It joins a growing group of over 30 members that are creating a market for net zero concrete. By joining ConcreteZero OHOB is signalling to concrete producers, investors and policy makers that there's a strong demand for sustainable concrete products.

As the demand for housing and infrastructure is to set to grow over the next 40 years, it’s critical that we get the concrete industry on track to net zero now.

Find out more about ConcreteZero

Use of HVO Fuel for Plant

  • HVO fuel (Hydrotreated Vegetable Oil Fuel) - manufactured using vegetable oils & animal fats – 100% biodegradable.
  • HVO was successfully trialled on a number of sites in late 2021 – target 50% HVO fuel used by 28/02/2022.

When compared to diesel, HVO fuel has shown reductions in carbon dioxide (CO2), nitrogen oxide (NOx) and particular matter.

Use of Efficient Plant

  • Manufacturers continually advancing the efficiency of plant – B&T Plant Hire ensures their fleet contains the latest and most efficient plant.
  • Hitachi ZX250LC-7 excavators were recently purchased to replace the fleet of Hitachi ZX250LC-6 excavators.

Advancements between models result in noticeably lower fuel consumption figures – As shown below the latest model uses just 91% of the fuel required by the older model on average

Use of 3D GPS Enable Excavators

  • All new excavators added to fleet will have 3D GPS capabilities allowing excavation parameters to be accurately programmed remotely by site engineer.
  • Removes need to engineer to travel and eliminates excess material being excavated and taken off site.

Kobelco SK210H

The newly adopted swing electric motor provides operability unique to a hybrid machine.

The large generator motor driven by the large-capacity lithium-ion battery constantly assists the engine, greatly reducing the engine load.

The new hybrid system effectively supports fuel efficiency and power for swing, digging, and traveling, thus realising a workload which far exceeds that of conventional machines.

Our Services


Ground Works

O'Halloran & O'Brien Ltd has established itself as a leading groundwork and civil engineering contractor in the South East of England, with offices in Kent and Surrey. With professional staff and highly qualified labour.


Concrete Frames

Initially working in the residential market in 2004, our concrete structures division has since expanded into the commercial and educational sector. With a turnover of over £180m our work is primarily in the South East of England, we have recently expanded into the Midlands and Northern Europe.



With over 50 years of construction history, OHOB has a proven record of highways maintenance works. Whether it is a new housing development, alterations to existing public highways, traffic lights, or large highway infrastructure, OHOB has the experience and the proven capability to carry out works to the highest specifications required; working closely with the adopting authorities to ensure the very best of quality and workmanship.

Groundworks and Civil Engineering

O’Halloran and O’Brien LTD,
O’Brien House, 197 – 199 Garth Road,
Morden, Surrey, SM4 4NE

020 8337 5527
Concrete Frames

O'Halloran & O'Brien
Unit 2 Dalefield Industrial Park,
Dalefield Way Gravesend, Kent, DA12 2FL

01322 423100