Mainstay is the Commercial and Asset Management operating division of the wider FirstPort Group, the UK's leading residential ... property services provider. Established in 2000, Mainstay brings a wealth of experience to offer a complete range of bespoke and innovative services for clients seeking expertise in the management of Commercial Properties, Facilities and Workplace Management, Surveying, Property Transfers, Resales, Lettings, Retirement Homesearch and the Build to Rent sector. read more