Mr Crosby said he saw no reason why the Bay could not continue the trend.
"Everywhere I go people are upbeat. They are very, very busy in whatever businesses they are in, which is good. They are confident. But it's important that we make sure that all of our community benefits from the strong economy, not just parts of it."
Tauranga Chamber of Commerce chairwoman Toni Palmer said there were several factors that helped keep the Bay ahead.
"The positivity reflects confidence in the main economic drivers in the region, for example, horticulture is strong, the building industry is strong and all the businesses that support these are benefiting from the flow-on effect," she said.
"This creates a vibrant and exciting business environment that attracts people to the area and grows our region."
Westpac chief economist Dominick Stephens said the survey was another excellent result for the Bay.
"Going by a number of economic indicators, it is not surprising that the region has been the most optimistic for five consecutive quarters. House prices are growing, creating a sense of wealth, unemployment rates are low, and horticulture is enjoying a purple patch."
"We would expect consumers in the Bay of Plenty to be feeling confident given their current economic situation," said Mr Stephens.
"It is worth noting that the region is one of just two in which respondents expect things to get better over both the one-year and five-year horizons."