She was concerned about the potential impact on the environment.
"The other concern is native birds and trees around the area. The environmental impact is going to be quite severe."
Another resident, Rebecca Huckle, said she thought the area was not the right space to develop in.
"There's no amenities on this side of town."
"There's one primary school, and obviously two secondary boarding schools, but any children who live there will have to go clear across Havelock to either Havelock Primary, Te Mata, and also the high school, which is just bursting at the seams."
A council spokesperson said the Ministry of Education had advised the growth at Iona can be accommodated within the existing school network.
Deputy Principal at Havelock North High School, Joel Wilton, said they were aware the detrimental effect increasing the roll could have if not well planed.
They were in the early stages of working on an enrolment scheme with the Ministry of Education to account for roll growth, the likelihood being HNHS will be less able to accommodate students from the wider Hastings and Napier area.
"Our intention is to remain the school of choice for our local community."
Other concerns raised by residents were the possible noise from the building site and added pressure on Havelock North's roads.
A resident, who asked not to be named, said there were already issues with roads in the area.
"As you come up Porter Drive and turn right into Middle Rd, which will be the main access into this progress, that's already getting really jammed at that corner."
"I can't see how you can bring in possibly 600 extra cars, and there's space for that."
"From a purely selfish reason for us, it's going to be at least 8-10 years of noise, and dust and tractors and building homes."
A council spokesperson said there are District Plan noise standards which need to be met, along with New Zealand construction noise standards.
"Consideration of a Traffic Management Plan at the time of subdivision is a discretionary council matter in response to submitters' concerns."
Hastings-Havelock North ward councillor Malcolm Dixon, said Havelock North had a housing shortage, and was pleased the rezoning had been approved.
"It's much needed, to be honest," Dixon said.
"There's been a shortage of residential sections in Havelock North for about the last three or four years."
One of the owners of the rezoned land, Andy Lowe said he was excited to build something for Havelock North they can be proud of.
"It's really neat that we have a clean canvas to do something really nice with."
The rezoning will come into effect from Wednesday.Lowe said now the rezoning had been approved they were starting to work on a plan.
