Halfpenny House is a sustainable Para 55 Passivhaus, designed by Hawkes Architecture.
  • Distant view of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology. The kitchen at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Distant view of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology. The kitchen at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Corner elevation of Halfpenny House, a large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Aerial view of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Garden elevation at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Plans of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The kitchen at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology. Distant view of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The lounge at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The landscaping at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The dining room at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The entrance elevation of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Tripple glazed sliding doors at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Drone image of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • External elevation of Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • Cladding detail at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.
  • The driveway at Halfpenny House, our large Para 55 family home in Smarden - Kent. Designed by Hawkes Architecture, this energy efficient timber-frame Passivhaus utilizes the very latest renewable technology.

Halfpenny House Para 55

Recently completed, this Para 55 house sits within an agricultural farmyard and an established hierarchy of existing structures.

The design concept for the building was to resemble an agricultural barn, respect the existing hierarchy. Integral to our designs were flood prevention measures, creating a sustainable drainage strategy and many biodiversity enhancements.

As part of the site falls within the 1 in 100 year flood risk area, the landscape design includes a number of natural ponds that form part of an integrated drainage system and improve the local ecology.

Project Data

  • Location: Smarden
  • Planning Authority: Ashford BC
  • Consent: Granted 2014
  • Type of Project: Para 55 New Build
  • Build Program: 14 Months
  • Gross Internal Floorspace: 392m²
  • Cost: £1m
  • Status: Completed 2017

Technology

  • 6 kW Photo-voltaic thermal system
  • MVHR Heat recovery system
  • 10 kW Windhager biomass boiler
  • Heat exchanger linked to thermal store
  • Immersun 2
  • 220v Voltage optimisation
  • Joule thermal store
  • Triple glazed
  • Low energy appliances & lighting throughout

Facts

  • Passive solar design
  • Super insulated (300mm thick) timber frame building
  • U-values of 0.12 W/M²K
  • Locally sourced materials
  • Airtight = 0.6 air changes/hour @50pa
  • 24 kWh/m² Annum heat load
  • 80 kWh/m² Primary energy consumption
  • EPC: A/A

Project Associates

Harry Barnes Construction Hughes Planning Squires Young

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