CitiesAlive NYC 2018 Call for Proposals Due March 4

February 13, 2018 at 3:22 pm

Green Roofs for Healthy Cities’ 2018 CitiesAlive will be held in New York City

CitiesAlive NYC 2018 Call for Proposals Due March 4

Presented by Green Roofs for Healthy Cities (GRHC), the CitiesAlive®: Annual Green Infrastructure Conference will take place in Brooklyn, New York on September 24-28.  Would you like to speak or present a workshop this year?

Call for Proposals Due March 4

As Corporate Members and perennial Media Partners, we at are sharing the GRHC Proposal specifics:

Now in its 16th year, CitiesAlive, hosted by Green Roofs for Healthy Cities, explores the most recent green infrastructure science, economic valuation, asset management, public policy developments, new technology, and best practices in design, installation, and maintenance. The goal is to help inform the current policy debate by making the case for a rapid and significant increase in green infrastructure investment. 

GRHC is looking for motivating and informative presentations and interactive workshops highlighting the following areas: 

  • Climate Change Mitigation and Adaptation
  • Best Practices for Shoreline Protection
  • Urban Agriculture and Food Production
  • Human Health and Biophilic Benefits
  • Economic Benefits – Green Infrastructure Accounting & Asset Management
  • Best Practices for Bioswales Design and Management
  • Stormwater Management (Policies, Quantification, Design)
  • Energy Benefits / Urban Heat Island
  • Urban Forestry Best Practices
  • Green Wall Design and Best Practices
  • Green Infrastructure Monitoring and Management using the Internet of Things
  • Green Infrastructure and Social Equity and Social Justice
  • Monetizing the Benefits of Green Infrastructure
  • Black Arts and the Best Practices for Waterproofing in the New York Area
  • Green Infrastructure and Extreme Weather in a Changing Climate
  • Green Roof Myth Busting
  • Green Infrastructure and Policy Change
  • Biodiversity and Wildlife on Green Roofs
  • Skyrise Greening

CitiesAlive NYC 2018 Call for Proposals Due March 4

Please visit the CitiesAlive Conference website for complete information, and the Call for Proposals to submit yours!

By Linda S. Velazquez, ASLA, LEED AP, GRP Publisher & Greenroofs & Walls of the World™ Virtual Summits Host

Denver Voters Pass I-300 Green Roof Building Code!

November 9, 2017 at 5:02 pm

Denver Voters Pass I-300 Green Roof Building Code

Green Roof Ordinance I-300 Passes from Denver Voters by 52%

After a hard fought battle from both sides, the votes were in late last night: Denver voters approved the I-300 Green Roof Code on Tuesday, November 7.  The initiative passed by about 52.5 to 47.5% of the vote, in spite of the fact that the opposition outspent supporters by a margin of 12 to 1.

Starting January 1, 2018, buildings in Denver larger than 25,000 square feet will be required to green a portion of their roofs either with vegetation or solar.

Battle of the Advertising Budgets

Huge financial support was garnered from the opponents of the measure, who spent an estimated $250,000.  In particular, Denver commercial real estate developers, some businesses, and the opposition campaign “Citizens for a Responsible Denver” were the leading challengers to the proposed mandate.

Contrast that amount to the meager $10,000 collected by the Denver Green Roof Initiative over the past months!  Grassroots leader and Denver Green Roof Initiative Campaign Manager Brandon Reitheimer says most of the money was spent on social media advertising.

And in particular, Brandon emphasized the importance of volunteer canvasing across the city, from homes to Democratic house district meetings to neighborhood association meetings.

Denver Voters Pass I-300 Green Roof Building Code

Denver Botanical Gardens.

Citizen-led Initiative with a Great Reach

The Denver victory is great for all of us in the living architecture field, but especially for the citizens of Denver.  And, hopefully it’s a sign that future municipalities also will provide leadership on sustainability.

The citizen-led initiative had much support from locals and within the greater greenroof community.  Many of us donated money, time, and marketing to the cause, including, Green Roofs for Healthy Cities (GRHC), and others within the U.S. greenroof industry.

Favorable Cost-Benefit Study from Green Roofs for Healthy Cities & Green Infrastructure Foundation

In mid-October, Green Roofs for Healthy Cities prepared a detailed cost-benefit analysis of the economic impact relating to the proposed I-300 Ordinance, entitled Making Informed Decisions: A Green Roof Cost and Benefit Study for Denver.”

GRHC found that widespread greenroof installation would result in 57.5 million square feet of living roofs, and generate $1.85 billion in savings by 2058 and approximately 25,000 job-years in employment over a 15 year period.

“The study doesn’t quantify many important green roof benefits or the solar component in the proposed law. We used conservative data on costs and benefits from Denver which suffers from terrible urban heat island impacts, combined with studies from other jurisdictions that have implemented mandatory green roof requirements,” ~ Andy Creath, Green Infrastructure Foundation board member and president, Green Roofs of Colorado in the 10.13.17 Green Roofs for Healthy Cities & Green Infrastructure Foundation Media Release

Denver Mayor Michael Hancock Weighs In

Denver Voters Pass I-300 Green Roof Building Code

Denver EPA Greenroof.

Mayor Hancock was against the measure, saying it went “too far,” in Denverite but added that the city would implement the will of the people.

“We are concerned that it may mean more initial costs. Once the people have spoken, that’s our job. There may need to be some tweaks, based on legal challenges. Though we were not going to line up and support the initiative, our values align.” ~ Denver is one of the first U.S. cities to require green roofs – so what happens now?

What Does Happen Now?

Regarding the passage of this Initiative, two important items remain:

1. I-300 will be reviewed by a Technical Committee which can put alterations to a vote by the Denver City Council;

2. And in six months, the Denver City Council would have the option of repealing or making changes to the ordinance with a two-thirds majority.

Denver Voters Pass I-300 Green Roof Building Code

Denver Residence on Quivas Street.

Is Denver Ready?

At present, the mayor and city council members are researching all of the possible opportunities and challenges that might be inherent in implementing the initiative. And Andrea Burns with Denver Community Planning and Development says the new ordinance will take a lot of effort, but that they will make it work for the people of Denver.

Green Roofs for Healthy Cities says it will continue to work with local groups, the Technical Committee, and the Denver City Council to strengthen and support the initiative and grow the area greenroof market.

Leila Tolderlund, LEED AP, GRP, an assistant professor in the University of Colorado Denver’s College of Architecture and Planning – and one of our Speakers at the Greenroofs & Walls of the World™ Virtual Summit 2017 – provided commentary to Denverite:

“We’re ready,” Tolderlund said of the landscape architects of Denver. Bring it on.” ~ Denver is one of the first U.S. cities to require green roofs – so what happens now?

Kudos to All

Congratulations to the tireless and persistent volunteers at Denver Green Roof Initiative, in particular Brandon Reitheimer, for their incredible work on passing the first fully citizen-led ballot initiative of this kind in Denver!

Additional work needs to be accomplished to keep Initiative 300 on track for next January 1, and you can count on us for continued media support.

Denver Voters Pass I-300 Green Roof Building Code

Community College of Denver.

For additional information, contact Brandon Reitheimer at or call (717) 433-3663.

By Linda S. Velazquez, ASLA, LEED AP, GRP Publisher & Greenroofs & Walls of the World™ Virtual Summit Host

Register now and join us online for our 2017 Virtual Summit through December, 2017.  Round #2 started on October 16th!

Denver Voters Pass I-300 Green Roof Building Code Project of the Week for October 2, 2017: Hedgegate

October 2, 2017 at 3:08 pm Project Week October 2 2017 Hedgegate

Sea Ranch, CA, USA
 1,800 sf Greenroofs & 300 sf Greenwall Project Week October 2 2017 Hedgegate Project of the Week: October 2, 2017

Mini Description & Details

Hedgegate is an award-winning private residence in Sea Ranch, located west of California Highway 1 on California’s scenic north Sonoma coast. The site and structures are regulated to preserve the view of the Pacific Ocean.

The limited 1300 sf of conditioned space and the 16-ft. height above the coastal meadow enable Hedgegate to sit lightly on the land, featuring dual living roofs and a green wall. The HOA provisions strictly limit approved species not only to California natives, but to a limited list of species specific to the local flora of the coastal meadow and coastal terrace ecological systems. Project Week October 2 2017 Hedgegate Project Week October 2 2017 Hedgegate

Owner architect Janet MacKinnon of AE Design used her modular sodpodmod system for propagation and delivery of local native species within a 5-inch growing media depth from rooflite and Enkadrain drainage from BonarBuilt. Each window of the main upper level of Hedgegate looks over the lower green roof, and the lower roof provides space for edible plants outside the kitchen.

The rainwater and stormwater from the roof, retaining wall, rain room, and driveway is collected in this drought-prone location in two 2,000 gallon underground cisterns for drip irrigation of the living roofs. Graywater is collected for irrigation of the ground landscaping.

The low water demand of the 3-inch depth of the green wall, made from Sedum Mat from Sempergreen plus additional natives and exotics, is met using a closed loop, drip irrigation system, recirculating water from the Koi pond at the base of the green wall. Project Week October 2 2017 Hedgegate Project Week October 2 2017 Hedgegate

The living roof in the foreground seamlessly integrates with the rolling coastal hills. September 29, 2017.


As a prototype, Hedgegate exemplifies how water systems can be integrated into a net zero home. The owners gladly open their home that, to date, has been toured by over 300 local visitors (including architects and builders).

Annually, thousands of travelers on California Highway 1 plus hikers and bikers on the parallel trails on each side of the highway experience the beautiful Hedgegate green roofs in the foreground of their view of the Pacific Ocean and the California Coastal National Monument. Project Week October 2 2017 Hedgegate

Publisher’s Note:

Hedgegate recently won the 2017 Small Scale Residential Design Awards of Excellence from Green Roofs for Healthy Cities at CitiesAlive 2017.

Year: 2016
Owner: Private
Location: Sea Ranch, CA, USA
Building Type: Single-Family Residential
Type: Extensive
System: Custom
Size: 1,800 sq.ft. greenroofs and 300 sq. ft. greenwall
Slope: 2 – 10%
Access: Accessible, Private Project Week October 2 2017 Hedgegate Project Week October 2 2017 Hedgegate

Designers/Manufacturers of Record:

Owner, Architect & Construction: Janet MacKinnon, AE Design
Stormwater, Graywater and Living Roof Design: Paul Kephart, Rana Creek Design
Rainwater & Graywater Systems and Green Roof & Irrigation: Kevin Heston, Project Manager, AE Design
Modular Greenroof System: Janet MacKinnon, sodpodmod
Structural Engineer: I.L. Welte & Associates
Growing Media: Joe DiNorscia, rooflite
Drainage: Enkadrain, BonarBuilt
Greenwall Vegetation: Sedum Mat, Sempergreen
Roofing Membrane: GacoFlex, Gaco Western
Irrigation: DIG Corporation
Architectural Photographer: Jonnu Singleton Project Week October 2 2017 Hedgegate Project Week October 2 2017 Hedgegate

All the Info:

View the Hedgegate PROJECT PROFILE to see ALL of the Photos and Additional Information about this particular project in The International Greenroof & Greenwall Projects Database. Project Week October 2 2017 Hedgegate

Project of the Week Video Feature

Watch the Hedgegate Project of the Week Video below or see it on our GreenroofsTV channel on YouTube: Project of the Week 10/02/17 video photo credits: All by Jonnu Singleton and Janet MacKinnon, courtesy of Janet MacKinnon of AE Design.

Did we miss your contribution? Please let us know to add you to the profile.

Would you like one of your projects to be featured on We have to have a profile first! Submit Your Project Profile.

Love the Earth, Plant a Roof (or Wall)!

By Linda S. Velazquez, ASLA, LEED AP, GRP Publisher & Greenroofs & Walls of the World™ Virtual Summit Host

Register now and join us online for our 2017 Virtual Summit through December, 2017.  Extended: Submit your Under 10-Minute Video by October 10th ~ Round #2 starts on October 16th! Project Week October 2 2017 Hedgegate

Last Chance to Register for CitiesAlive with Early Bird Rates, Offer Ends September 7th! by GRHC

September 4, 2017 at 3:54 pm

Last Chance Register CitiesAlive Early Bird Rates Ends September 7

It’s not too late to be early!
CitiesAlive Conference // September 18-21, 2017 // Seattle

Join colleagues at the most engaging green infrastructure conference this year.  Technical sessions and keynote speakers will highlight the latest in green infrastructure policy, design and economics – you won’t want to miss this!

Presented by Green Roofs for Healthy Cities, now in our 15th year, we invite you to attend the CitiesAlive Conference held on September 18, 19 & 20 to see over 50 green infrastructure experts speak, attend training courses to enhance your career, and tour Seattle’s finest green infrastructure projects.

See the full conference agenda here.  Register for your CitiesAlive experience here.

Take advantage of our early bird rates and see the following green infrastructure expert speakers:

Last Chance Register CitiesAlive Early Bird Rates Ends September 7THE HUMAN FACTOR
Kathleen Wolf, Ph. D., Research Social Scientist, University of Washington
Dr. Wolf is a Research Social Scientist at UW and a research associate with the US Forest Service Pacific NW Research Station focused on Urban Forestry and
Stewardship. Since receiving her Ph.D. from University of Michigan, Dr. Wolf’s research has focused on the human dimensions of urban forestry and ecosystems.

Last Chance Register CitiesAlive Early Bird Rates Ends September 7THE ART OF INTEGRATING BLUE, GREEN AND SOCIAL
Herbert Dreiseitl, Director, Ramboll Liveable Cities Lab
What is livability in today’s context and how can we achieve this in dense urban spaces? Blue-green infrastructure will become a necessity as a survival and success strategy for Cities faced with the challenges of climate change and urbanization. This presentation talks about how to implement these technologies for liveable cities, using the example of innovative and award-winning blue-green infrastructure projects, including Bishan Park in Singapore, Potsdamer Platz in Berlin, and Queens Botanical Garden in New York.

Last Chance Register CitiesAlive Early Bird Rates Ends September 7BREAKING GROUND WITH BIOPHILIC DESIGN
Bill Browning, BED Colorado University, MSRED MIT, Hon. AIA, LEED AP
One of the green building and real estate industry’s foremost thinkers and strategists, and an advocate for sustainable design solutions at all levels of business, government, and civil society. Early in his career, Bill built Buckminster Fuller’s last experimental structure. In 2006, he cofounded Terrapin Bright Green LLC an environmental strategies research and consulting firm. Browning’s clients include Disney, New Songdo City, Lucasfilm, Google, Bank of America, the White House, and the Sydney 2000 Olympic Village. Browning is a founding board member of USGBC. In addition to consulting, Bill writes and lectures widely on sustainable design and building practices. He is a co-author of Green Development: Integrating Ecology and Real Estate; A Primer on Sustainable Building; Greening the Building and the Bottom Line; Biophilic Design; The Economics of Biophilia; Midcentury (un)Modern; and 14 Patterns of Biophilic Design.

Last Chance Register CitiesAlive Early Bird Rates Ends September 7SHAPING OUR CITIES
Mami Hara, General Manager / CEO, Seattle Public Utilities
She is an executive and planner committed to advancing equitable and sustainable cities and regions through collaboration and strategic investment. She has led management and policy coordination of a renowned public utility and the direction of an international design and planning firm.In her public sector and private practice roles, Mami has guided planning and implementation of award-winning green infrastructure, economic development, sustainability, and waterfront programs across the United States. In those efforts she has advanced sustainable land and water management practices through cultivating leaders, partnerships, participation, planning and knowledge sharing.

Paying Tribute

We will be recognizing the late Stephen Kellert, forefather of biophilic design.

“One of the greatest challenges of our age is how to live in compatible and even harmonious relations to the natural world. Living architecture represents an important step in the direction of reconciling people and nature in the modern built environment…”

Last Chance Register CitiesAlive Early Bird Rates Ends September 7Stephen Kellert
Yale Professor of Forestry & Environmental Studies
Founding Partner + Consultant for Biological Capital

Attending CitiesAlive?  Enhance your professional practice with these educational opportunities:

All courses will be taking place Monday, September 18th at the Sheraton Seattle Hotel:

  • Green Roof Design & Installation
       Time: 8:30am – 4:30pm
  • Advanced Green Roof Maintenance
       Time: 1:00pm – 4:30pm
  • Introduction to Rooftop Urban Agriculture
       Time: 8:30am – 12:00pm
  • Green Walls Design 101 (New)
       Time: 1:00pm – 4:30pm
  • Stormwater Workshop
       Time: 8:30pm – 12:00pm
  • Biophilic Design Workshop
       Time: 1:00pm – 4:30pm

Learn more about these comprehensive courses here.

All training courses are approved for CEUs by AIA, BOMA, LA CES, APLD, RCI and GRP

Exclusive Green Infrastructure Tours!

This year at CitiesAlive join us as we explore green roofs, rooftop gardens, LID projects and sustainable buildings with our expert guides.  Tours include:

Wednesday, September 20 at 3:00pm – 6:00pm:

  • The Bertschi School
  • UpGarden P-Patch Community Garden

Thursday, September 21 at 9:00am – 12:00pm:

  • Amazon Campus Green Roof Visual Tour
  • Bellevue City Hall Green Roof Tour
  • Bill & Melinda Gates Foundation Green Roof Tour
  • Bullitt Center Tour
  • Freeway Park Tour
  • High Point Community Tour

3:00pm – 6:00pm:

  • Etera Mount Vernon Site Tour

Fantastic Networking Opportunities

Mingle with international and local Green Infrastructure experts and catch up with colleagues at the CitiesAlive Evening Reception on September 18th from 8:30pm – 11:30pm at the Seattle Aquarium.

Tickets are included with all conference registrations.  A la carte registration is available for only $49.

Last Chance Register CitiesAlive Early Bird Rates Ends September 7

Register by September 7 and Save $50!

Register now as rates increase 10% at the door!  Can’t attend CitiesAlive?  Order the conference recording here to check out what you missed afterwards.

To register visit

~ Green Roofs for Healthy Cities

Last Chance Register CitiesAlive Early Bird Rates Ends September 7

Green Roofs for Healthy Cities (GRHC)

GRHC’s mission is to increase the awareness of the economic, social and environmental benefits of green roofs and green walls, and other forms of living architecture through education, advocacy, professional development and celebrations of excellence.

Visit for more information.

Contact Steven Peck, GRHC founder and president at and 416-971-4494 x 233.