O’Halloran & O’Brien delivers high-quality, large-scale groundworks and civil engineering solutions across London, the South East and beyond. For over 50 years, our Groundworks Division has supported the successful delivery of major infrastructure and residential developments through expert planning, technical capability and safe, efficient execution.
Our involvement begins from day one , preparing sites for construction through enabling and earthworks packages. We carry out reduced level excavations, site clearance, piling mat construction, temporary haul roads and ground remediation.
With an extensive in-house plant fleet and experienced workforce, we deliver each phase with precision, programme certainty and cost efficiency.
We undertake the full scope of below-ground drainage and utility works, including deep drainage, manhole construction, storm and foul diversions, attenuation systems and pumping stations.
Our teams also manage ducting, utility corridors and service connections, ensuring all underground infrastructure is installed safely, accurately and in full compliance with adoptable standards.
From foundations and ground beams to retaining walls, podium slabs and hard landscaping, our substructure and external works teams provide the vital link between groundworks and superstructure.
Every element is delivered to the highest standards of quality, safety and finish - ready to support the next stage of construction.
What sets us apart is our ability to deliver every stage of a project using directly employed teams and in-house plant and logistics support.
This integrated approach ensures complete control over safety, quality and programme, allowing us to consistently meet client expectations on projects of every scale. Early engagement, collaborative planning and continuous innovation remain at the core of our success - ensuring we deliver sustainable, value-driven solutions on every site.
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