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Sustainable Land Development International is a member-owned organization dedicated to promoting land development around the world that balances the needs of people, planet and profit – for today and future generations. Members include land developers, builders, civil engineers, landscape architects, land planners, architects, arborists, construction contractors, real estate brokers, attorneys, financial consultants, investors, government representatives, educators, students, product/service providers, and other stakeholders in land development. SLDI is dedicated to helping land development stakeholders leverage the knowledge, skills, relationships and technologies to differentiate their professional efforts from others in the industry, while connecting them with like-minded leaders and organizations that help them effectively enhance the quality of their work, and that of the industry, to deliver greater and more lasting value for civilization.
Executive Team  Terry Mock, Executive Director
A land developer for more than 30 years, Mock previously served as Founding Executive Director of the Champion Tree Project International. He is now also planning a permaculture eco-forestry research, education and recreational project on the southern Oregon coast. He received a degree in Real Estate and Urban Land Studies from the University of Florida. Complete Bio  Tony Wernke, President, Business Development
Wernke has been involved in land development business management, technology development and process efficiency with industry technology and information resource organizations for more than 15 years. He received his Business Management degree from the University of Iowa. Complete Bio
 Greg Yoko, President, Industry Relations
Yoko possesses over 20 years of strategic marketing experience in a variety of positions, including responsibilities in advertising, consulting, management, marketing, media relations, politics, promotions, public relations, sales, and publishing. He received his Masters of Communications degree from Edinboro University. Complete Bio
Board of Directors
In addition to the three-member SLDI executive team, the following industry professionals direct the organization on behalf of the membership by serving on SLDI's board of directors. As SLDI continues its growth, addtional member board seats will be added.  David Garland, Vice President of Development, Hansen PSC
Mr. Garland has worked within the commercial real estate industry for the past 10 years. He is vice president of development at Hansen PSC, Inc. where he manages a California land development and entitlement portfolio consisting of multifamily, commercial and retail developments. He is also a principal of Pacific States Capital, a commercial real estate debt and equity firm. Garland holds a BA, Summa Cum Laude, from the University of Notre Dame; a degree from Oxford University; and an MBA from the Melbourne Business School.  Harold E. “Skip” Preble, President, Land Analytics, LLC
Mr. Preble has been active in the real estate development industry for over 25 years. He earned his BS in Economics and Masters in Land Economics from Texas A&M University. He has been involved in master planned community development, as well as lot development and home building. His firm, Land Analytics, LLC provides financial analysis, project optimization and training services to developers, home builders and investors throughout the United States and Canada.
Strategic Objectives
Profit
Develop and promote interdisciplinary knowledge and technologies that unite technical expertise and understanding while improving the quality of solutions and resulting in increased net revenue and new business opportunities. - Reduce business costs and increase income, resulting in increased financial yield;
- Obtain unique market access for creating enhanced value; and
- Broaden market opportunities.
Planet
Promote ecologically sound land development that protects and restores essential ecosystems.
- Create holistic industry best practices that embrace sustainable development practices;
- Implement sustainable development certification programs for individuals and projects; and
- Create a sustainable development industry dominant brand – SLDI™ solutions.
People
Promote social, environmental and financial best practices by facilitating stakeholder alliances.
- Educate and inform stakeholders about the importance of sustainability and the role of Sustainable Land Development International;
- Promote the importance of social equity to overall community sustainability; and
- Leverage core technologies for all stakeholders through the use of SLDI™ solutions.
Guiding Principles The solutions we seek reside within the fractal model (right), which depicts SLDI’s interrelated guiding principles – the overrising beliefs which guide our decisions and actions. These concepts are adapted from the Hannover Principles (a consensus document encouraging an environmentally sustainable future, presented at EXPO 2000, The World’s Fair in Hannover, Germany). The tenets, represented in a fractal equilateral triangle (adapted from William McDonough and Michael Braungart in the book “Cradle to Cradle”), put forth the ideas of sustainable development that, if used as a holistic planning model, can ensure the success of SLDI, individual projects, and carry our land development industry forward. SLDI’s new interpretation of the principles and the sustainable fractal triangle matrix configuration is as follows:
Create Economic Value
At the top of the equilateral triangle, representing economic growth, is the effective pursuit of “profit”. In order for sustainable development to achieve its goals, it must fully embrace the profit motive. This motive requires that developments deliver maximum value to all stakeholders in the most efficient means possible within the holistic triple-bottom-line perspective.
Accept Responsibility
The "people" leg of the equilateral triangle represents the social responsibility of industry professionals to recognize that project design affects a broad level of human well-being. Society requires and benefits greatly from gaining a greater sense of connectedness; having greater access to quality food, shelter, health care needs, as well as work, creative, recreational and educational opportunities; preserving its cultural and biological heritages; being safe; accessing cultural enrichment opportunities; respecting the diversity of its people; and participating in its own governance. Within the context of natural laws, it is every individual’s right to maximize these social opportunities, and it is the land development industry’s responsibility to create the infrastructure to enable these opportunities to more readily occur.
Model Nature
The “planet” leg of the triangle recognizes the ultimate value and intelligence of our natural world. Our environment offers an infinite number of time tested and successful patterns, designs and structures from the most minuscule particles, to expressions of life discernible by human eyes, to the greater cosmos. We must not only respect our natural world for its power to sustain us, but as we change and modify it, understanding its workings will lead us to the ultimate solutions we require to sustain ourselves. Make no mistake, the earth will survive. It is our societies which may be in peril. Using an ecological standard to judge our innovations will help us determine which solutions will work, and which solutions will withstand the difficult and ultimate test of time.
Eliminate Waste
Emanating from the creation of economic value and minimizing environmental impact is the concept of eliminating waste. Waste reduces profit, and as a result must be eliminated, but it won’t be easy. Eliminating waste requires strong visionary leadership that can transform a liability into an asset. It requires team building, the development of greater trust, and getting a previously fragmented group of people working more effectively together. That is indeed a challenging task, but its relentless pursuit is absolutely necessary if we hope to achieve sustainability.
Quality of Life
Building from our social responsibilities is the understanding that the values our society espouses, and in fact, the spiritual “lift” we gain from positive land developments, are more important than the material items we can own and consume. We must value and focus on the “soul” of our lives, for it is the root of true happiness and quality of life.
Energy Flows
Emanating from nature’s model is our understanding of the natural long-term energy flows which emanate from the sun, and are captured by plants, some of which are eaten by animals, which then (along with plants) cycle the energy into the earth, which stores it and ultimately feeds our plants again. Our short-term oriented consumption of these energy stores is seriously disrupting the cycle, and we must learn how to respect, protect and utilize these natural energy flows.
Share Knowledge
Between the “profit” and “people” ideals is the recognition that, as we progress deeper and deeper into sustainable land development, we must be willing and able to share the knowledge we gain with the other stakeholders throughout the world. Our industry has many areas of specialization, and in order for anyone to effectively develop the requisite holistic perspective, we must seek to better understand and address the needs of all the stakeholders throughout the process.
Humans and Nature Co-exist
Rather than humans dominating nature, or being required to avoid nature, there must be a recognition that humans and nature can and do co-exist. With this recognition comes an understanding that we must benefit from nature, but that nature must also benefit from us.
Recognize Interdependence
Between the “profit” and “planet” ideals, and stretching to the very epicenter of the triangle is the understanding that we must recognize – in fact maximize the effectiveness of – our interdependent relationships. This interdependence exists not only among industry professionals, but with society as a whole – as well as cause and effect in the natural world. This principle of interconnectedness, inseparability and union provides us with a continuous reminder of our relationship to the whole, a blueprint for the sustainability of our work.
As we dig deeper and deeper, the model replicates itself, becoming infinitely complex, yet always maintaining the necessary holistic, triple-bottom-line perspective.
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