From JLL, regarding the global office market as of Q2 2015:
Rental growth continues to move at a steady pace, with the annual rate of growth on prime office assets across the 95 major markets covered by the JLL Global Office Index standing at 2.3% and around 70% of all markets recording rental uplift over the past year. Quarter-on-quarter, rents increased by 0.9%, compared to 0.4% in Q1 2015.
Office leasing markets made a significant rebound during the second quarter, with global leasing volumes at their highest level since Q4 2011 and expansion demand now firmly on the agenda of many corporate occupiers. While technology continues to have a significant impact on leasing markets across the globe, there is now a much broader diversity of demand in terms of industry sector. Tightening fundamentals are boosting landlord confidence and JLL predicts that prime rental growth will accelerate to 4% for the full-year 2015.