Occupying an elevated cliff top position with one of Cornwalls most spectacular coastal views Tresidder was damp, leaky and hard to heat in the winter due to its exposed position. ARCO2 concluded that there was an overwhelming case for replacement.


Tresidder boasts a stunning location with coastal views across Polurrian Bay. In a highly visible location access to Tresidder is via a narrow private lane and public right of way. This joins the SW coast path which skirts the seaward boundary of Tresidder.


  • Within an Area of Great Scientific Value
  • An Area of Outstanding Natural Beauty
  • Adjacent to the Mullion Site of Special Scientific Interest


A single large monolithic form would dominate this visually sensitive site, so the accommodation is divided into 2 parts. A sunken single storey wing hidden against the existing hedge - line abuts a modestly sized and elegantly proportional 2 storey gabled "barn".


  • Sits comfortably in the landscape
  • Dark coloured natural timber
  • Familiar slate covering


Based upon the Passive House principles with a fabric first approach Tresidder is designed and built to utilise minimal energy and maintain a consistant comfort level throughout the year. The completed house exceeds the minimum Passive House U-Values whilst also having a very impressive air pressure test result.

  • Highly insulated with warmcel recycled newspaper
  • Timber frame construction
  • Mechanical Ventilation with Heat Recovery