Embedded Commercial Capability + Executive Contract Risk Advisory

Contract Expertise | Risk & Cost Management | Claims Resolution

At OH&A, we specialise in commercial advisory services for the construction and infrastructure industry across Australia.

With over 45 years of combined experience, our founders - Kevin O’Hara and Eoin Aylward - lead a team of dedicated professionals committed to delivering commercial clarity, risk control, and financial outcomes for subcontractors, Tier 1 and Tier 2 contractors, developers, private sector clients, and asset owners.

What We Do
We support our clients across the entire project lifecycle - from pre-contract strategy through to final account negotiation. Our core services include:

Contract Advisory
Drafting, reviewing, and administering AS, GC21, NEC, and bespoke contracts.

Contractor Support
Providing embedded commercial personnel - Commercial Managers, Contract Managers, Contract Administrators, Quantity Surveyors, and Claims Specialists - on flexible secondment arrangements. Our people integrate into your team to deliver practical, on-the-ground support where and when it's needed.

Claims & Dispute Resolution
Expert preparation and resolution of claims, variations, delays, and disputes.

Commercial Risk Management
Proactive risk identification, contract compliance, and cost forecasting.

Procurement Strategy
Designing and managing procurement models tailored to your project’s goals.

Cost Planning & Control
Detailed cost estimating, value engineering, and budget tracking.

AI in Contract Management
•	Assisting clients to navigate the AI landscape in relation to contract reviews, negotiation and finalisation.
•	Helping clients navigate the evolving AI landscape to support contract review, negotiation, and finalisation.

OH&A Commercial Advisory

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OH&A Commercial Advisory

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Teams

Offices

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