(ShareCast News) - Property company Workspace said its total rent roll was up 8.9% to £75.6m in an interim statement.The FTSE 250 firm said like for like rent roll was up 4.5% for the quarter to £48.6m and up 17.7% over the year from 30 June 2014.The company said it reduced overall interest cost on debt reduced by 0.5% to 4.9%.Workspace chief executive Jamie Hopkins said the growth was driven by continued high demand from new and growing companies and further uplifts in pricing across the portfolio."The two acquisitions, four disposals and two planning consents we have achieved since April are testament to our strategy of active portfolio management and value creation as we continue to deliver superior returns for shareholders," Hopkins said in a statement.Shares in Workspace were up 0.34% to 927.62p at 08:21 BST.