Lancaster Cohousing Project

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Lancaster Cohousing Project is a certified Passivhaus / Code for Sustainable Homes Level 6 (carbon neutral) and Life Time Homes, affordable community housing project. This groundbreaking exemplary (car free) owner occupied eco housing project has evolved through a participatory design process with the 41 individual householders and EcoArc Architects.The aim was to design a neighbourhood based upon Passivhaus / ecological values, where it is very easy to live a low carbon, sustainable lifestyle.
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Lancaster Cohousing Project : 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 August 2012
Location Halton, Lancaster Lancashire  England
Build typeNew build
Building sectorPrivate Residential
Property typeMid Terrace
Construction typeMasonry Cavity
Other construction type
Party wall construction
Floor area 2979
Floor area calculation method Approximate Floor Area
Building certification  Passivhaus certified building Passivhaus certified building

Project Team

OrganisationEco Arc Architecture
Project lead personAndrew Yeats
Landlord or ClientLancaster Cohousing
ArchitectEco Arc Architects: Ecological Architecture
Mechanical & electrical consultant Alan Clarke, Nick Grant
Energy consultant
Structural engineerRamboll: Gary Willis, David Tasker
Quantity surveyor
ContractorWhittle Construction: Graham Bath

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 -