Joe Atkinson

LILAC LOW IMPACT LIVING

Location

Urban setting: 'compact cities'.Good access to sustainable transport options

Segregated cycle path direct to city centre encourages cycling

Site Design Principles

Site Design PrinciplesPrivate homes of mixed (& modest) size;Common house for communal activities & shared infrastructure.

Limited car parking at periphery; pedestrianised central spaces; ample cycle storage

Private homes of mixed (& modest) size;Common house for communal activities & shared infrastructure.

Site Design Principles

Private homes of mixed (& modest) size;Common house for communal activities & shared infrastructure.

Small private gardens;Large communal gardens, play & growing spaces Limited car parking at periphery; pedestrianised

central spaces; ample cycle storage

Site Design Principles

Private homes of mixed (& modest) size;Common house for communal activities & shared infrastructure.

Small private gardens;Large communal gardens, play & growing spaces

Buildings orientated to balance natural surveillance & community-building with passive solar gain

Limited car parking at periphery; pedestrianised central spaces; ample cycle storage

Site Design Principles

'Fabric first' approach

Triple glazing

MVHR

Solar PV

Solar thermal

Year 1 Year 2 Year 30

50

100

150

200

250

300

350

400

Annual Gas & Electricity BillsGround floor 1 bedroom flat at LILAC

ElectricityGas

3 yr total: £928: how do adjustments for appliance use, occupancy & microgeneration influence this?

2013 Q2

2013 Q32013 Q4

2014 Q12014 Q2

2014 Q32014 Q4

2015 Q12015 Q2

2015 Q32015 Q4

2016 Q12016 Q2

£0.00

£20.00

£40.00

£60.00

£80.00

£100.00

£120.00

£140.00

£160.00

Quarterly Gas & Electricity Costs

ElectricityGas

2013 Q2

2013 Q32013 Q4

2014 Q12014 Q2

2014 Q32014 Q4

2015 Q12015 Q2

2015 Q32015 Q4

2016 Q12016 Q2

£0.00

£20.00

£40.00

£60.00

£80.00

£100.00

£120.00

£140.00

£160.00

Quarterly Gas & Electricity Costs

ElectricityGas

Single bill for

Q3 & Q4 In 2015

year to Q1 2014year to Q3 2014

year to Q1 2015year to Q3 2015

year to Q1 2016

0

20

40

60

80

100

120

Moving Average Annual Total Energy Use per m2

Total net energy demand per square metre = “Specific Primary Energy Demand” in Passivhaus standardgas demandSpace heating/m2 (assumes 60% of gas used for space heating)

kWh

/ m2

/ yr

How does it compare to passivhaus standard?

SUDS/Rainwater harvesting

Landscaping

Allotments

Community composting

Economies of scale

Communal laundry

Shared workshop & tools

Local/ethical economic impacts

Community enablesemergent green behaviour

Informal re-use/recycling

Affordable housing as enabler of social/environmental action

Any questions?

Resources - reading"Towards an agenda for Post-carbon Cities: Lessons from LILAC, the UK's first Ecological, Affordable Cohousing Community" Chatterton, P. 2013 International Journal of Urban and Regional Research vol. 37 no. 5

"Cohousing", McCamant, K. Durret, C. 1998

"Creating a Life Together: Practical Tools to Grow Ecovillages and Intentional Communities" Christian, D.L. 2003

"Cohousing in Britain: A Diggers and Dreamers Review" Bunker, C. et al 2011

Organisations: non-profit/advocacy

www.lilac.coop / @lilacleeds www.cohousing.org.uk www.cds.coop www.communitylandtrusts.org.uk www.nasba.org.uk www.seedsforchange.org.uk www.ica-uk.org.uk