Driven by a deep connection to the sustainability of our environment, Wendel Rosen led the legal industry in achieving third party certification as a green law firm and in forming a practice group to serve those clients who sought to combine social and environmental responsibility with business success.  While our practice was recognized early on for its excellence, we haven’t rested on our laurels.  Our Green Business Practice Group joined 1% for the Planet to donate one percent of its revenue to environmentally-focused nonprofits, we helped draft and secure passage of Benefit Corporation legislation for the State of California, and we guided our firm through the process of becoming a certified B Corp member.  Our passion for sustainability creates a deep sense of trust and connection between us and our clients.  We draw upon our significant experience in green building, renewables and natural and organic products to advise and support companies that believe smart business and long-term stewardship of natural and human resources go hand-in-hand.

Green Building

Our attorneys are experienced in specific areas of law relating to green building and construction. We guide clients on a range of matters, including sustainable construction and design criteria (such as the U.S. Green Building Council LEED® program) and laws mandating green building, recycling and waste management. We also assist with construction, architectural and engineering contracting, public works and competitive bidding laws, and construction claims resolution and litigation.


Wendel Rosen’s renewable energy lawyers have extensive experience in documenting all phases of electricity supply, production and distribution with particular focus on solar, geothermal, and wind powered energy. We assist renewable energy project owners with transmission and interconnection issues, financing and permitting, and the purchase and sale of environmental attributes, such as renewable energy certificates (REC’s). For our larger energy clients, we advise on California Public Utility issues.

  • Power purchase agreements (PPAs)
  • Project development
  • Syndications
  • State and federal renewable energy tax credits
  • Secondary markets
  • Construction and Manufacturing
  • Operations and maintenance (O&M) agreements
  • Technology transfer contracts
Sustainable, Natural and Organic Products

Not all products are created the same. Sustainable products are manufactured using methods intended to minimize environmental impacts over their life cycle. Natural products, within the commercial context, refer to cosmetics, dietary supplements, and foods that are minimally processed without adding artificial ingredients. Organic agriculture and foods are governed by the National Organic Program. There are many state and federal laws, regulations, and guidelines governing the manufacturing, marketing and distribution of sustainable, natural and organic products. Our attorneys help translate these legal requirements into actionable business guidance for clients whose focus remains on people, planet and profitability.

Our green business attorneys work closely with other Wendel Rosen practices, including corporate, environmental, employment, intellectual property, litigation, real estate, and others, to offer clients comprehensive support for the various legal issues that affect their businesses.



  • Served as outside general counsel to internet-based client, advising client on all matters ranging from contract negotiations/drafting, application for and enforcement of trademarks, and general employment matters

  • Helped organize media-based client as limited liability company

  • Revised contract template documents for energy efficiency contractor

  • Advised leading Bay Area ice cream maker in trademark matters and licensing agreement with professional athlete

  • Represented the manufacturer of natural organic fruit snacks in its acquisition by a leading national natural foods company

  • Assisted homeowner in resolving dispute with neighbors over construction of solar array in conjunction with complex green building home remodeling project

  • Engaged as special income tax counsel to advise on the income tax consequences of a proposed downstream merger of a Delaware corporation engaged in the business of designing, manufacturing and installing photovoltaic solar energy systems. Representation included applying to the IRS for and obtaining a private letter ruling that the proposed transaction was not substantially equivalent to a taxable liquidation of the target company.

  • Successfully represented organics company against lawsuit by dissident shareholder and director of breaches of fiduciary duties, failure to allow inspection of corporate records, misappropriation of corporate opportunities, involuntary dissolution and wrongful termination of employment claims

  • Represented third party certifier in civil inquiry, request for production of documents and investigation by Federal Trade Commission concerning certification under the FTC’s Green Guides. Obtained dismissal of matter whereby FTC terminated inquiry and issued closing letter to client without requiring any remedial actions or mitigation measures from client.



Wendel Rosen Focuses on More than Just the Law

Wendel Rosen Focuses on More than Just the Law

07/01/2019 | Contra Costa Lawyer

On July 1, 2019, Contra Costa Lawyer published an article by Wendel Rosen attorneys Donald Simon and Amara Morrison. The article touches upon the Bay Area Green Business Program and how…

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Hot Tips for a Tenant to Green its Space

Hot Tips for a Tenant to Green its Space

10/15/2015 | Oakland Business Review

by C. Gregg Ankenman and Daniel B. Myers Companies of all shapes and sizes ranging from office and commercial tenants to those in the retail sector continue to look for…

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Celebrate Sustainability Fall 2019

Celebrate Sustainability Fall 2019

10/23/2019 | The Alameda County Green Business

Join Wendel Rosen and The Alameda County Green Business  for an evening to celebrate sustainability! The event will  recognize business that have been following green practices for at least 10…

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SF Business Times Recognizes Firm for Corporate Philanthropy

SF Business Times Recognizes Firm for Corporate Philanthropy

07/17/2019 | San Francisco Business Times

As a leading law firm in corporate social responsibility and sustainability, Wendel Rosen LLP has been long committed to corporate philanthropy. We are beyond honored to be recognized as the…

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Wendel Rosen Receives “Platinum” Recognition From Law Firms Sustainability Network’s ALISS Assesment

Wendel Rosen Receives “Platinum” Recognition From Law Firms Sustainability Network’s ALISS Assesment


OAKLAND, Calif., Sept. 13, 2017 – Wendel, Rosen, Black & Dean LLP is proud to announce that it has received a “Platinum” ranking from the Law Firm Sustainability Network’s (LFSN)…

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