Beacon View - Dundon Passivhaus

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Set at the foot of a wooded hill the house has been designed to make the most of the fantastic views across the Somerset levels. The windows frame different views creating an experiential richness that extends the domain of the interior into the surrounding landscape.The form of the house relates to nearby agricultural buildings rather than the suburban houses in the village. A gently sloping roof extends beyond the building envelope on three sides to create sheltered outdoor spaces that blur the distinction between house and garden. This welcoming, sheltering gesture works in harmony with the energy strategy by providing summer shading to the large windows.Green oak columns support the roof, tied back to the main timber-framed structure which is clad in green oak. The wall construction is vapour permeable to moderate humidity and create a healthy internal atmosphere.
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Beacon View - Dundon Passivhaus : 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 date01 December 2013
Location Compton Dundon Somerset  England
Build typeNew build
Building sectorPrivate Residential
Property typeDetached
Construction typeOak frame
Other construction type
Party wall construction
Floor area 203
Floor area calculation method Treated Floor Area (PHPP)
Building certification  Passivhaus certified building Passivhaus certified building

Project Team

OrganisationPrewett Bizley Architects
Project lead person
Landlord or ClientGraham Bizley
ArchitectPrewett Bizley Architects
Mechanical & electrical consultant
Energy consultant
Structural engineerStructural Solutions
Quantity surveyor

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 -