These FTSE 100 (INDEXFTSE: UKX) London-focused property stocks could provide bigger cash returns than buy-to-let, says Roland Head. : Since 2013, house prices have consistently risen faster than rents, according to a new report from estate agents Hamptons International. That’s put pressure on buy-to-let landlords’ profits, which rely on capital gains from property sales and rental income that’s high enough to cover ownership costs. Rental yields in London now average just 5.4%, according to Hamptons. In the North East, where yields are highest, the figure is 8.7%. Those numbers may seem attractive.