Tauranga City Council did not normally process consents within time frames set out under the RMA, Mr Thorne said.
CBC Construction director Peter Cooney said it took two years to rezone one of its projects behind the hospital on 17th Ave. It could have been resolved in months but instead cost the company hundreds of thousands of dollars in holding costs and legal and planning bills, he said.
The RMA needed more teeth to enable development and shortcut lengthy delays, he said.
"It has created a complex environment where all councils have been allowed to write their own complex district plans that have made developing very difficult and the process cumbersome."
Bluehaven Management chief executive Bill Miller said it took more than seven years to get consent for its Golden Sands development at Papamoa and costs ran into seven figures.
Development generated jobs and "what is more important families earning income and business being created or someone arguing about a planning point or a question on the RMA?" he said.
Houses under construction in the subdivision equated to work for hundreds of people and helped towards growing the economy, Mr Miller said.
The process meant there were very few developers left in Tauranga, he said.
Councils respond
The Bay of Plenty Regional Council has nine staff who deal with consents, said senior communications manager Linda Thompson.
Its figures showed consent applications under the RMA had risen from 304 in 2013 to 376 last year. Every one was processed within statutory time frames, which "means delays have been caused by the applicants rather than the council", she said.
Tauranga City Council communications adviser Marcel Currin said in a written statement the council needed more time and could not provide a comprehensive answer to the same questions asked by the Bay of Plenty Times but would provide statistics this week.
He did, however, offer a general statement from environmental planning manager Natalie Rutland.
"Tauranga City Council actually has a high success rate for meeting statutory time frames. If the council is at fault for a delay the RMA gives us an ability to discount the consent fees.
"Some delays are out of the council's control and there are many times when the clock needs to stop while processing as we ask developers for more information because applications do not adequately address the relevant consenting matters.
"We encourage and actively facilitate pre-application discussions with all our developers, particularly our key large-scale developers to ensure efficient and timely consent processing occurs and delays are avoided," she said.