Gale & Snowden have been the architects for Trelowarren since 1999, undertaking several phases to create the world-class and award-winning development at the Estate. The main Trelowarren house and gardens are Grade I listed and have true Cornish character and ambience.

The Leisure facilities at Trelowarren consist of a high-quality swimming pool, changing facilities, gym and treatment centre and, together with the outside tennis court facilities, provide healthy relaxation for visitors and locals alike. The swimming pool is lined with natural pebbles and utilises non-toxic water treatment.

The development has been designed to be consistent with the environmental policy that the client has developed for the rest of the estate. With this in mind, the house, renovated buildings, swimming pool and leisure facilities have all been designed to the highest environmental and healthy building standards. All buildings are sympathetic to the historical setting and Cornish traditions and serve to enhance the feeling of continuity on the estate.

Trelowarren uses a central, wood-fired boiler to provide carbon-neutral heating and hot water for housing and the swimming pool, with the boiler generating a total peak demand output of 550kW. The wood for the boiler is coppiced from woodland on the estate, guaranteeing the quality of the fuel source and enabling a carbon neutral self-renewing energy source.