Green building consultant Jerry Yudelson expects green rennovation, reduced water consumption and net zero buildings to top this year's green building trends.

Yudelson is a green building consultant, a LEED pioneer and a popular speaker. He's authored more than a dozen books about green building, including Dry Run: Preventing the Next Urban Water Crisis, Greening Existing Buildings, and Choosing Green: The Home Buyers Guide to Good Green Homes.

Here's Yudelson's list of Top Ten Green Building Trends for 2011:

1. The worldwide green building movement will continue to accelerate, as more countries begin to create their own green building incentives and developing their own Green Building Councils. More than 70 countries, on all continents, will show considerable green building growth in 2011.

2. Green building will rebound in 2011, as measured by the new LEED project registrations as a proxy for this growth. The dramatic slowdown in commercial real estate construction in many countries was not offset by other sectors such as government, and so the growth rate of new green building projects fell dramatically in 2010.

3. Green building in the U.S. will continue to benefit from the Obama presidency with a continued focus on greening the executive branch. New announcements of a commitment to a minimum of LEED Gold for all new federal projects and major renovations confirm and highlight this macro-trend.

4. The focus of the green building industry will continue to switch from new buildings to greening existing buildings. The fastest growing LEED rating system in 2010 was the LEED for Existing Buildings program, and I expect this trend to continue in 2011.

5. Blue will become the New Green. Awareness of the coming global crisis in fresh water supply will continue to grow, leading building designers and managers to take further steps to reduce water consumption to increase sustainability. This will be done in buildings through the use of more conservation-oriented fixtures, rainwater recovery systems and innovative new water technologies.

6. Zero-net-energy designs for new buildings become increasingly commonplace, in both residential and commercial sectors, as LEED and ENERGY STAR ratings become too common to confer competitive advantage.

7. Performance Disclosure will be the fastest emerging trend, highlighted by new requirements in California and other states. Commercial building owners will have to disclose actual building performance to all new tenants and buyers.

8. Certified Green Schools will grow rapidly as part the LEED System. This trend will accelerate as understanding of the health and educational benefits of green schools grows. Already by mid-year 2010, green schools represented nearly 40 per cent of all new LEED projects in the U.S.

9. Local and state governments will step up their mandates for green buildings for both themselves and the private sector. We’ll see at least 20 major new cities with commercial sector green building mandates. The desire to reduce carbon emissions by going green will lead more government agencies to require green buildings.

10. Solar power use in buildings will continue to grow. This trend will be enhanced by the increasing focus of municipal utilities as they need to comply with state-level renewable power standards (RPS) for 2015 and 2020. As before, third-party financing partnerships will continue to grow and provide capital for large rooftop systems such as on warehouses. However, we may very well see a slowing of large solar and wind systems, as federal grant support, in lieu of tax credits, is phased out.

Yudelson's sixth point, about LEED becoming workaday, is echoed in JWT Intelligence's 100 Things to Watch in 2011, which predicts: "Stricter Green Building Standards – some will move beyond LEED to more stringent standards like the Living Building Challenge or Passive House."

And the top item on the Earth Advantage Institute's 2011 trend list echoes the recent Tyee report, Green Homes For Less.

"New business models, technologies, and the mainstreaming of high performance materials is bringing high-performance, healthy homes within reach of all homeowners," predicts Earth Advantage.

Monte Paulsen researches sustainability for the non-profit Tyee Solutions Society.