The council is considering the purchase of two properties on Durie Hill, number 3 and 9 Blyth St.
The council received 121 submissions on the proposal, 99 of which supported the purchase of 9 Blyth St, and 19 others opposed it.
3 Blyth St was slightly more controversial, with 95 submissions supporting the purchase, and 19 opposed.
As well as the submissions, the council received a petition with 192 signatures supporting the purchase of 9 Blyth St.
Another submitter, Russ Goudie, a former resident of Durie Hill, supported the purchase of 9 Blyth St, saying the reserve was a "prime treasure" that required protecting.
"Land around the memorial tower should not be built upon. Create a reserve incorporating tables, chairs, grass, and playground for enjoyment."
"Costs of purchasing the land will be offset by local and visitor pleasure."
While Goudie is supportive of retaining the green space, he was less supportive of a purchase of both properties, saying number 3 wasn't a necessary purchase.
"Number 3, in some ways, I think is unsaleable," he said.
"I'm not against it, but if you're short of funds, I'd go for number 9."
Clinton Sewell had a different view, saying the council shouldn't purchase the land under any circumstance while the city grapples with more pressing issues such as rubbish and roading.
"I don't understand the logic of it. We've got lots of green spaces in Whanganui already. I believe we should be spending money in other areas," he said.
"All our rates have gone up, and we've still got no decent services. Our roads are rubbish, and our lights are rubbish."
Councillors agreed in principle to the purchase of both land titles subject to agreeing with the vendor.
*Clarification: An earlier version of this story said council held a closed-door session to discuss the proposal. This was to discuss details of the offer, not the decision to purchase.