Christow, Dartmoor.

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The project has been led by the Christow Community Land Trust (CCLT), a voluntary collection of villagers, in partnership with local affordable housing provider, Teign Housing. The land was donated for 1 by Teignbridge District Council. Dartmoor National Park Authority supported the CLT through the planning process. This was the first Passivhaus project for the contractors and the client and provided a challenge to produce a quality product which met the requirements for Passivhaus.The 18 affordable dwellings comprise of two, three, and four bedroom houses & bungalows. 14 are available to rent as affordable housing and 4 have been sold on the open market. The timber framed homes have large window overhangs and solar thermal hot water. Annual heating and hot water bills are expected to be less than 100 per year.
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Christow, Dartmoor. : Project images

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CO2 emissionsPrimary energy requirement
Energy target

Energy and fuel use

Fuel use by type
Primary energy requirement
CO2 emissions

Measured data from renewable generation is not yet available.

Fuel use

Electricity use - - -
Natural gas use- - -
Oil use- - -
LPG use- - -
Wood use- - -
Other Fuel - - -
Primary energy requirement - - -
Annual CO₂ emissions - - -
Annual space heat demand - - -

Renewable energy

Electricity generationForecastMeasured
Renewables Technology--
Other Renewables Tech--
Electricity consumed by generation --
Primary energy requirement
offset by renewable generation
Annual CO₂ emissions
offset by renewable generation

Calculation and targets

Whole house energy calculation method
Other whole house calculation method-
Energy target PassivHaus
Other energy targets-
Forecast heating load -


Pre-development air permeability test--
Final air permeability test--

Project description

Start date
Occupation date
Location Christow Devon  England
Build typeNew build
Building sectorPublic Residential
Property typeSemi-Detached
Construction type
Other construction type
Party wall construction
Floor area 1439
Floor area calculation method -
Building certification  Passivhaus certified building Passivhaus certified building

Project Team

Project lead person
Landlord or ClientChristow Community Land Trust & Teign Housing
ArchitectMichell Architects
Mechanical & electrical consultant
Energy consultant
Structural engineerAirey & Coles
Quantity surveyor
ContractorPearce Construction

Design strategies

Planned occupancy
Space heating strategy
Water heating strategy
Fuel strategy
Renewable energy strategy
Passive Solar strategy
Space cooling strategy
Daylighting strategy
Ventilation strategy
Airtightness strategy
Strategy for minimising thermal bridges
Modelling strategy
Insulation strategy
Other relevant retrofit strategies
Contextual information

Building services

Space heating
Hot water
Renewable energy generation system
Strategy for minimising thermal bridges

Building construction

Volume -
Thermal fabric area -
Roof description
Roof U-value -
Walls description
Walls U-value -
Party walls description
Party walls U-value -
Floor description
Floor U-value -
Glazed doors description
Glazed doors U-value - -
Opaque doors description
Opaque doors U-value - -
Windows description
Windows U-value - -
Windows energy transmittance (G-value) -
Windows light transmittance -
Rooflights description
Rooflights light transmittance -
Rooflights U-value -