Clarke said security at the pensioner flats had been on the council's "radar" for some time.
The council had talked to the residents, who had made it clear that they did not want gates, but that had changed of recent times.
"The issue was well raised, and has been dealt with," Clarke said.
"We can have 300 jobs like this from all over the district on our hands at any given time, and this one is well in hand."
A council spokesman said the gates would be lockable.
Mahoney, meanwhile, said the gates he had ordered would be put to good use elsewhere.
"I can use the strainer posts on the farm, and I'm sure I'll find a use for the gates, or someone else might need them," he said.
The request for gates arose from residents' frustration over their cars being broken into on a regular basis. One said it had been a problem for 10 years. She no longer used the carpark and another resident had resorted to removing the ignition barrel from his vehicle when it was there.