Title: Presentacin de PowerPoint
1Utilities, building affordability Michael
Mobbs
NCOSS Shelter NSW Conference, Sydney 2
November, 2004
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
2Atmospheric CO2
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
3Four sustainable projects a subdivision, new
house, renovation and a block of units They show
- A saving of over 10,000/lot on utilities
costs - Infrastructure costs 63,250 ie gt one
third cost of a house / Living gt 3000 (aircon) - Sustainable Infr costs 21,5000 / Living
lt500 - The barriers to efficient land housing
development
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
4The projects show (cont) Project 1 - New house -
An efficiently designed built 2-bedroom house
with study has
- A bulding cost of 80,000
- A utilities cost of 11000 for energy, water
and sewage (on site systems) - Electricity water bills of lt300/annum for 2
people - Costs include the sustainable energy, water and
recycled water systems
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
5Project 2 A Sustainable Renovation Project
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
6Sustainable Renovation in Dense Urban Area
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
7After the renovation, the house looks and works
the same as it did before otherwise it could not
be easily sold
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
8What did not change?
- Changes do not change the way the lights are
used, water is drunk, toilet is flushed - No training needed
- Local plumbers electricians did the work
- All products are available in Australia
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
9What did it change? Water System
- Catches rainwater from the roof
- Stores it for drinking, cooking, showers,
dishwashing hot water
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
10New timber floors in the living room, kitchen
dining room are Flooded Gum cut from regrowth
forest in NSW. They are finished with natural
timber sealant
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
11Renovation retrofit and living costs
Retrofit 1996 48,000 2004 lt 20,000 Living
costs before and after 1996 2000 water,
energy 2004 300 water, energy
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
12Local trades install locally made products
The Smarfo gutter 15 months after it was
installed. The gutters are cleaned by the wind,
not the residents. It is an enclosed gutter
that excludes leaves and debris
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
13Residential Unit Project
- 32 two bedroom residential unit complex
- Approval from Qld EPA local council
- Project aimed at investor tourist market
- 28 units sold off plan at prices x 3 that
previously achieved
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
14The Residential Unit Project (cont.)
- All water harvested on-site, all sewage reused
on site - No headworks charges
- No water or sewage rates
- On-site costs roughly equal headworks charges
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
15Barriers to and facts about sustainable
infrastructure projects
- Efficiently sustainably serviced land can
be provided for 30 less per lot than
unsustainable land development costs - Educating council staff councillors,
negotiating red tape can increase approval
times for sustainable subdivisions - Inefficient rules, design, construction
practices add over 30 to each subdivided lot
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
16Subdivision Cost Compared - Qld
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
17Barriers to affordable Housing
- Unsustainable Council and Government water
businesses monopolise water service
infrastructure, community facilities - Government monopolies use rule-making powers
to prevent competition from private sector - Government monopolies are high water users and
polluters of water and air - Inefficient design, pricing and construction
practices inhibit sustainable housing
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
18Project Home Costs for Sydney Subdivision, 2004 -
Typical, unsustainable, NW Sector
Build cost of three bedroom Terrace house
165,000 GSThouse
Stand alone 192,000 GST Size
of house Terrace house
150 SQM
Stand alone 175 SQMSize of
lot Terrace house
375 to 480 SQM
Stand alone 480 to 700
SQMInfrastructure costs 63,250 ie gt one
third cost of a house / Living gt 3000
(aircon) Sustainable Infr costs 21,5000 /
lt500
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
19Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
20Electricity used by Sydney Water and Sewage
services, per megalite or water delivered or
sewage treated, 1993/94 to 2000/01
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
21Councils Greenhouse Pollution
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
22Electricity used by Sydney Water Systems Vs. On
site Rainwater Wastewater Systems
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au
23- Sydney Water pumps water and sewage along its
20,000 kms of mains pipes using electricity. - On top of that, there's as much piping within
each of Sydney's 1 million house lots. - Each day Sydney consumes over 1,300 megalitres
of water, requiring 400,000kWh of electricity,
producing over 350 tonnes of greenhouse gas
emissions (BASIX does not count this
government-made pollution, probably because its
written with the latest update of the ancient
computer script, He Who Writes the Program
Controls the Drips). - Annually, this amounts to approximately 130,000
tonnes. - If all households in Sydney harvested
rainwater, this figure would drop below 10,000
tonnes a 90 per cent reduction. - Mains water demand (and thus stormwater
run-off) would drop similarly by over 90 per
cent. - Rainwater tank pumps use less energy and are
more efficient. -
Michael Mobbs, Sustainable Projects Pty Ltd,
www.sustainablehouse.com.au