Residents of the Banksia Park Retirement Estate in Bright Road and the Callistemon Court Aged Persons Units in Chilcott Street, have again become the target of thieves in recent weeks.
Kwinana Police Officer in Charge Steve Thompson said two offences had been reported from 45 Chilcott Street.
A unit in the complex was burgled on April 7 and a vehicle broken into on April 9.
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READ NOW"The burglary is part of a series we are investigating in conjunction with Rockingham detectives occurring in the mornings, in the areas of Leda and Calista," Senior Sergeant Thompson said.
"The community can be reassured that police are conducting targeted patrols of the area and all forensic and other avenues are being pursued.
Callistemon Court is a joint venture between the city and the Department of Housing.
Kwinana Mayor Carol Adams said the City and rangers worked with security patrols, local police, Wilson Security and residents in a bid to address anti-social or criminal behaviour within Callistemon Court.
"It is upsetting that residents may be experiencing issues, particularly given their age and vulnerability and it saddens us there are people who would take advantage of them," she said.
"We will continue to work with our residents to ensure they remain vigilant in securing their premises and continue to encourage all residents or people walking in the vicinity to report any suspicious behaviour directly to police if they see or hear anything."
Sen. Sgt Thompson urged residents to ensure their doors and windows are secured.
"Should local residents note suspicious behaviour, immediately call police on 131 444," he said.
"Anyone with information about these incidents can call Crime Stoppers on 1800 333 000."