Residents on Caledonian Avenue say cats from the home of Louise Jones regularly enter neighbouring properties and climb onto roofs.
"They came over the fence and hang around on our roof," neighbour Lily told 9News Perth. "The washing on the line, sometimes we have to take it in early so it doesn't smell like cat."
Another neighbour, Ryan Quinn, said he and his partner had barely used their backyard since moving in two years ago. "Anyone that's cleaned a cat's litter tray, it's like that amplified a thousand-fold," he said.
The situation has left residents frustrated, with the odour described as overwhelming and the roaming cats preventing them from enjoying their outdoor spaces. The homeowner has not commented publicly on the allegations.