The 2017 law firm market overview discusses the transition of global city office markets toward greater leverage for firms, with indications of rising vacancy rates and slowing rent growth in major markets like London, New York, and San Francisco. It highlights that while demand remains steady in cities like Paris and Munich, London is seeing a supply influx leading to potential rent declines. Overall, rising vacancy and increased tenant concessions are reshaping the landscape for law firms, amid a broader trend of challenges from technology and hiring practices.