Sonic Civil Investments acquires Stornoway

Aerial of Tasman bridge over wide flowing Derwent river in Tasmania Australia at sunset.
Deal typeM&A
IndustryReal Estate
Sub-industryConstruction
Client nameSonic Civil Investments

Our deal advisory team is proud to provide exclusive buy-side merger & acquisition (M&A) advisory services to Sonic Civil Investments (Sonic) on its acquisition of Stornoway, a leading Tasmanian infrastructure maintenance and management services provider.

Stornoway has over 50 years of experience, delivering road and bridge maintenance, asset management, water and wastewater treatment, traffic management and specialist access services across Tasmania and Queensland. 
Sonic is an employee-owned Tasmanian civil infrastructure services group whose portfolio includes key operating subsidiaries Shaw Contracting and Hardings Group, enhancing its end‑to‑end civil capability through the acquisition of Stornoway.

BDO’s deal advisory team, led by partner, Silvio Colaluca, provided market pricing, acquisition modelling, valuation, deal structuring, investment case development, and supported negotiation of transaction agreements.

The transaction unites two leading Tasmanian businesses to form one of the state’s largest full lifecycle civil infrastructure services groups. The combined business will service State and Local Government as well as Tier 1 Enterprise clients and is expected to grow to more than 450 employees.

We were delighted with the guidance and support provided by BDO’s M&A team, led by Silvio Colaluca, in Sonic’s acquisition of Stornoway.


BDO’s M&A experience and knowledge provided significant insight to the Sonic Civil Investments Board in assessing the merits of the investment, including risks, opportunities, and its strategic value. Their specialist analysis, deep subject matter expertise, and knowledge of the key factors in executing a successful M&A strategy, gave the Board confidence that the right investment decision would be made.


The advice was clear and concise with sufficient detail to be understood, and the team attentive, responsive, respectful, and balanced. Our experience with BDO was overwhelmingly positive.