Tammera Diehm  

Winthrop & Weinstine, P.A.

Phone: (612) 604-6658

Email Website

Tammera Diehm - Capella Tower, Suite 3500 Minneapolis MN 55402

Practice Area

  • Real Estate 50
  • Land Zoning 25
  • Business Law 25

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Tammera R. Diehm is a shareholder at Winthrop & Weinstine with extensive expertise in complex real estate and leasing matters. In her practice, Tami has represented local and national clients of all types and sizes in real estate transactions involving multiple levels of government approvals, environmental challenges and various forms of public and private financing. Tami regularly appears before local governments and regulatory agencies on behalf of clients seeking land use and permitting approvals, and works with clients to find creative solutions to complex projects.  Tami served as city attorney for a first ring suburb for eight years, and served three terms as an elected city council member for Columbia Heights, where she lives.  Her knowledge of both the legal and political aspects of land use and zoning issues bring a fresh and creative perspective to real estate development projects.

In addition, Tami helps lead a multi-disciplinary team of lawyers who provide full service representation to gas and convenience store owners and fuel distributors. The team provides legal expertise and practical advice in all areas affecting people in this industry including real estate, land use, zoning, leasing, environmental, finance, tax, employment, corporate, intellectual property, succession planning, regulatory and M&A services and litigation. From day-to-day operational issues to unique and specialized matters such as large acquisitions, new development and asset divestiture, Tami and her team truly cover the waterfront to provide full service to these clients.

Along with land use, environmental and real estate development, Tami has experience representing both for-profit and tax-exempt organizations on a variety of issues, including formation, tax and general governance. She has assisted organizations with compliance matters involving the Internal Revenue Service, the Minnesota Attorney General’s office, the Minnesota Campaign Finance and Public Disclosure Board and the Federal Election Commission. Tami provides general counsel services to a number of for-profit and non-profit clients of varying sizes throughout the Twin Cities area, and is a frequent speaker on issues related to lobbying and corporate political involvement.

Prior to joining the firm, Tami served as a judicial extern for Federal Magistrate Judge Jonathan Lebedoff (2003) and clerked for the Honorable Russell A. Anderson, Minnesota Supreme Court, 2003-2004. In addition to having served on the City Council, Tami was a member of the Columbia Heights Economic Development Authority and was Chair of the Housing and Redevelopment Authority. Tami served as an appointed member of the Metropolitan Council’s Land Use Advisory Committee and served as a policy member of the Minneapolis Nicollet-Central Policy Advisory Committee. Tami has been recognized by her peers with honors including as a Rising Star, 2007-2012; Minnesota Super Lawyer, 2015-2016; inclusion in The Best Lawyers in America© in Municipal Law and Land Use Zoning, 2010-2017; a Forty Under Forty honoree; the MSBA North Star Lawyer recognition, 2012-2016; and among the “Top Women in Finance” by Finance & Commerce, 2014.

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American Bar Association

Minnesota State Bar Association

Anoka County Bar Association

Minnesota Commercial Real Estate Women (MNCREW)

NAIOP (Commercial Real Estate Development Association)

Minnesota Petroleum Marketers Association (MPMA)

National Association of Convenience Stores (NACS)

Minnesota Service Station & Convenience Store Association (MSSA)

Society of Independent Gasoline Marketers of America (SIGMA)


Name: Tammera Diehm
Law Firm: Winthrop & Weinstine, P.A.
Address: Capella Tower, Suite 3500 Minneapolis MN 55402
Phone: (612) 604-6658

Email Website

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