Harrison Grierson has been in business for 129 years and also has offices in Auckland, Wellington and Christchurch, as well as Brisbane and Townsville. In addition to Tauranga, the firm's Bay of Plenty presence includes an office in Whakatane.
The company employs more than 300 civil, structural and building services staff, environmental engineers, surveyors, planners and urban designers, with about 20 staff in the Tauranga office.
The firm's planning division was involved with many leading strategic planning, structure planning and development projects around the country, including in Tauranga and the wider Bay of Plenty, Mr Collins said.
The division also comprises a number of experts who assist clients with resource consent applications and evidence at council and Environment Court hearings.
Local projects include work on The Lakes development at Tauriko, as well as other property developments, and the Bell Rd stormwater pump station and other pump stations in the Waikato region.
"I love the challenge of the new role and it is an exciting time to be part of the leadership team at Harrison Grierson," he said.
Last month Harrison Grierson launched a rebrand following two years of change, which saw every aspect of the business re-engineered, including its organisational and capital structure since the appointment of Glenn Cornelius as managing director in January 2012.
David Needham, who is manager of the Tauranga branch, said the local outlook for the company's business was looking sound.
"There was a bit of lag here, compared with some of our other offices, but in the past 12 to 14 months we've seen an improvement in activity in all parts of the business."
He said there were signs the upward trend could be sustained for at least the next 18 months to two years.
Mr Collins, who is also currently the Bay of Plenty branch president of the NZ Property Council, said it was great to see the confidence in the property sector and wider economy.
"And it's heartening to see investment returning to Tauranga in quite a significant way."