Looking outside Hawke's Bay had great benefits, with potential gains in roading services and planning, shared IT and pest control as some examples, Mr Wilson said.
Hawke's Bay mayors have been split over the amalgamation debate, with Hastings Mayor Lawrence Yule pushing for an amalgamation of councils and Napier Mayor Barbara Arnott standing firmly in opposition.
A recent drive by business leaders for an independent study on the region's performance increased pressure for the regional council to agree to the study.
An assessment would also be made into what role local government played in enabling socio-economic development or impeding it, and what changes were necessary to better the Hawke's Bay economy.
Councillor Neil Kirton moved an amendment to include the structure of local government in the study.
"Any move forward in terms of its social and economic development must include consideration of the way local government is structured," he said.