Sustainable development meets the needs of the present without compromising the future. It considers the triple bottom line of economics, environment, and social equity. Most residential energy usage is for space heating, while transportation and industry also heavily rely on energy. Sustainable house strategies include building small and air tight, using natural light, and investing in efficient long-term systems rather than operating costs through techniques like renewable energy and local/recycled materials.

1. Sustainable Development
UNITED NATIONS definition:
development that "meets the needs
of the present generation without
compromising the ability of future
generations to meet their own needs."

2. The Triple Bottom Line

3. Real Cost Accounting

4. Peak Oil
2008

5. Renewable Energy

6. Energy Usage
40%=
Our Built Environment
Agriculture
3% Commercial
13% Residential
17%
Transportation
Industry 29%
38%

7. Residential Energy Usage
Water
Heating
21%
Space
Heating
61% Appliances
12%
Lighting
5%
Cooling
1%

8. Appliance Energy Usage
Freezer
15%
Air Refridgerator
Conditioner 27%
9%
Dish Washer
16%
Washer/Dryer
33%

9. Typical House Services
gas
elect
water
storm
sanitary

10. Some sustainable strategies for house design
• Build small - Design good spaces and flexible spaces, not big spaces.
• Re-imagine the role of urban land - Think of it as a working landscape to
be cultivated and used as an integral part of the how the house functions.
• Build air tight – Design well insulated exterior walls and roof.
•
. to capture maximum day-lighting.
Natural Light, not electric light - Design
• Invest in capitol, not operating dollars – for example:
– Invest in an energy efficient HVAC design,
– use energy star appliances,
– install occupancy sensors on all light switches,
– choose a wood stove not a wood fireplace,
– specify good quality windows and doors,
– incorporate good quality finish materials,
– Source local and recycled materials where possible.
• Hire an architect

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34. Detail of roof outside bedroom View of all three levels of Upper roof
planted roof