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Allison P. Altaras

Karen Dunahay, 303.575.7586


Allison Altaras represents landowners, developers, and business clients of all sizes in urban, infill, and raw land development matters. The bulk of Allison’s practice focuses on purchase and sale transactions, title and survey review, land use and development approvals, cost sharing agreements, easements, private covenants, and leasing matters. Her land use work spans the entire life cycle of a project, from annexation, exactions analysis, zoning and rezoning, subdivision, site planning, development agreements, and infrastructure design and financing mechanisms. Allison enjoys working  on a project team and collaborating with other professionals and consultants.

As part of Allison’s passion for land stewardship, she also works with farmers, ranchers, and private landowners on conservation easements and other issues unique to rural land, including the relationship between public lands and privately-owned property. She handles due diligence on water rights associated with land transactions, water rights conveyancing, and negotiations with public and private utility providers over land development issues.

Before joining Otten Johnson, Allison practiced water and environmental law, representing municipal, commercial, and industrial water users in the adjudication and protection of their water rights. Allison served as an appellate law clerk for Hon. Gregory J. Hobbs, Jr. of the Colorado Supreme Court and interned with the Denver Board of Water Commissioners, the U.S. Department of Justice Environmental and Natural Resources Division, and the Rocky Mountain Land Use Institute.

Allison currently co-chairs the firm’s Diversity, Equity & Inclusion Committee and also serves on the firm's Marketing & Business Development Committee.

Practice Areas

Industries Served


  • Co-Presenter:  Advanced Legal Topics for Farm and Ranch Brokers, Realtors Land Institute (September 2019)
  • Co-Presenter: Residents Gone Wild: When Community Meetings Go Off Script, Rocky Mountain Land Use Institute Annual Conference (March 2019)
  • Presenter: Colorado Land Planning and Development Law, Land Use Case Law Update (March 2018)
  • Contributing Author, Colorado Land Planning and Development Law, Eleventh ed.; Bradford Publishing (2017)
  • Volume 16 Editor-in-Chief, University of Denver Water Law Review (2012-2013)
  • Volume 15 Court Reports Editor, University of Denver Water Law Review (2011-2012)
  • Contributing Author, Rocky Mountain Land Use Institute Model Sustainable Community Development Code (2010-2012)
  • Contributing Author, (2010-2011)

Awards & Involvement

  • Volunteers for Outdoor Colorado - Board of Directors; Executive Committee Member; Chair of Grossman Scholarship Committee (2017-Present)
  • Professional Advisory Board Member, University of Denver Water Law Review (2015-Present)
  • Tulane University Early Admissions Program - Alumni Interviewer (2018)
  • ABA Conference Planning Committee - Water Law Section (2016)
  • Colorado Legal Aid Foundation - Associates Advisory Board Member (2014-Present)
  • Denver Legal Nights Volunteer (2014-2016)


  • State of Colorado
  • Colorado Bar Association


  • J.D., University of Denver Sturm College of Law (2013)
  • B.A., Tulane University (2007)


"I support Volunteers for Outdoor Colorado because, as “consumers” of Colorado’s unparalleled outdoor environs and amenities, I believe we have an obligation to care for and steward them for the generations to come."