TAC Consultancy provides commercial, procurement and strategic advisory support to organisations delivering complex projects — without the overhead of a large firm. Led by Troy Chapman, the practice brings more than 20 years across government, private sector and consulting.
TAC Consultancy was established to give clients experienced executive-level support without the overhead and complexity of large consulting firms. I work closely with leadership teams, project stakeholders and delivery partners to improve commercial outcomes, strengthen governance, manage risk and support successful project delivery.
My experience includes leading commercial strategy across multi-billion-dollar portfolios, advising on procurement and contracting frameworks, supporting major infrastructure and renewable energy projects, and delivering practical solutions to complex commercial and operational challenges.
I pride myself on building trusted relationships and delivering clear, practical advice — the kind of senior commercial counsel that moves projects forward rather than slowing them down.
Engaged as a senior commercial advisor — project-based or on retainer — to support executives, leadership teams and organisations across commercial strategy, procurement, governance, negotiation, delivery and transformation initiatives.
Senior commercial counsel for executives and project leadership. Strategy, structuring and decision support across the project lifecycle.
Advisory support across procurement strategy, market engagement, contract negotiation and commercial management under Australian Standard, GC21 and bespoke delivery frameworks.
Senior commercial leadership across transport, utilities, energy and large-scale infrastructure projects — from procurement and delivery through to close-out and operational transition.
Commercial and strategic advisory support across renewable energy, utilities and transition projects, including wind, solar, water and emerging infrastructure sectors
Strengthening commercial governance, procurement controls and risk frameworks, including delegations, probity, assurance and commercial compliance structures.
Practical commercial support across claims, variations and dispute resolution — protecting commercial outcomes while maintaining delivery momentum and stakeholder relationships.
Engagement
Defined scope, clear commercial outcomes. Embedded support across procurement, negotiation, delivery, governance or transformation initiatives — tailored to the needs of each engagement.
Engagement
On-call commercial advisor for executives, project leaders and organisations requiring trusted strategic and commercial support for high-stakes decisions, negotiations and project delivery.
A focused and commercially driven approach — designed to identify the issues that matter, align stakeholders, support confident decision-making and deliver practical outcomes.
Rapid assessment of the commercial, contractual or project environment to identify the key risks, delivery pressures and commercial levers that matter most.
Develop the commercial strategy, procurement approach, governance framework or negotiation pathway required to support confident decision-making and successful delivery.
Work alongside leadership teams and delivery partners to execute the strategy, manage negotiations, resolve commercial issues and support successful project outcomes.
Led the development and implementation of enterprise commercial strategy and procurement frameworks within a complex development environment — embedding governance, market engagement and commercial risk management across major initiatives.
Established scalable commercial capability and contributed to the 2021 Value Recognition Award for the Western Parkland City Authority Proposal.
Commercial oversight and contract management across critical M&E systems for the WestConnex M5 Stage 2 project, including fire, LV, ventilation and equipment packages.
Delivered critical project outcomes within strict commercial and delivery parameters while strengthening commercial capability and risk awareness across the broader team.
National-scale commercial governance, tendering and contract management support across energy, utilities, transport and infrastructure sectors.
Secured long-term commercial outcomes, reduced claims exposure and supported development of the R&D submissions platform later adopted across other Downer subsidiaries.
Plain answers to the questions clients usually ask before engaging a senior contract consultant.
TAC Consultancy provides senior commercial, procurement and strategic advisory support across infrastructure, energy, property and major projects.
I work directly with executives, project leaders and delivery teams on commercial strategy, procurement, governance, contract negotiation, tendering, disputes, project delivery advisory and interim commercial leadership engagements. Engagements are typically structured as project-based advisory, executive support, strategic commercial initiatives or ongoing retained advisory relationships.
I work closely with executives, project directors, contractors, developers, government agencies, owner’s representatives and delivery teams across both public and private sector organisations.
My experience spans major infrastructure, renewable energy, development, utilities and complex project environments throughout Australia and the United Kingdom.
When you engage TAC Consultancy, you work directly with me from start to finish.
There are no layered delivery teams, leveraged consulting models or unnecessary overheads. The focus is on practical, commercially grounded advice shaped by more than 20 years of leadership experience across infrastructure, procurement, governance and major project delivery.
The approach is straightforward, commercially focused and outcome-driven, with advice designed to support decisions, strengthen delivery and protect commercial outcomes in the real world.
Most engagements can be scoped and mobilised within one to two weeks.
For urgent commercial matters such as negotiations, tenders, disputes, governance reviews or interim leadership support, engagement can often commence much sooner depending on availability.
Yes.
While most engagements are based in Australia, TAC Consultancy also supports select international opportunities where there is a strong strategic fit and clearly defined scope of work.
Depending on the engagement, support can be delivered remotely, on site, or through a hybrid model.
Engagements are structured based on the nature of the work and client requirements.
Depending on the scope, I work on a day rate basis, fixed fee advisory arrangement, or ongoing monthly retainer for executive and commercial support.
Commercial arrangements are discussed transparently upfront and tailored to each engagement.
