A woman who advertised a room for rent in her apartment in Sydney's inner west was allegedly violently sexually assaulted and choked by a man who turned up to inspect the property, police say.

Jong Han Park, 26, has been charged with attacking the 31-year-old woman at her home on Corby Avenue in Concord early on Easter Sunday.

The Concord apartment block where a woman was allegedly sexually assaulted after advertising a room for rent. Credit:Rachel Olding

Mr Park, a Korean national, has also been charged with assaulting another woman at a house in Strathfield last month, as well as stealing two cars and leading police on a pursuit.

Police believe the man may have responded to other online advertisements for rental properties in Sydney, and have appealed for anyone who may have encountered him to contact police.