Tightest Hamilton rental market since 2002 halts condo conversions ‘More people are at greater risk of homelessness and of general hardship’: City staff By Kelly Bennett, CBC News Posted: Apr 14, 2015 5:45 AM ETLast Updated: Apr 14, 2015 5:45 AM ET Hamilton’s apartment vacancy rate plunged to 2.3 per cent in 2014, according to…