Spenser Associates - Master Builders. Spenser Associates have been established 18 years. We work in Stoke Newington, Hackney, Highbury and Islington and specialise in the refurbishment of period properties and give a complete building service. With 18 years experience of remodelling period properties Bruce Spenser LCGLI, a professional builder, will see your project through from its infancy to completion. We supply all labour and materials and our design service is free if you commission us to undertake your project within a set timescale.