• Tjornehoj & Hack

  • Tjornehoj & Hack

  • Tjornehoj & Hack

  • Tjornehoj & Hack


Lawyers Who Know the Land in the Rocky Mountain West

Our firm was founded by natural resources lawyers.  From our original core practice focusing on the exploration and development of energy resources, mining, and public lands, we have grown a broad set of skills to navigate all aspects of land and mineral management. We bring that experience to bear by partnering with each client to seek out pragmatic solutions for the development and preservation of their assets. Whether you need to sort out an intricate web of legacy title problems, require assistance structuring a transfer of property interests, or want to secure your lands for future generations, we have the skills to help you find the best way forward.


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Our Services

Title Examination

Providing a clear and precise picture of the ownership landscape

Estate Planning

Your future, today


Let us structure the deal you want from start to finish

Meet the Team

A collaborative team focused on your needs

COVID-19 Notice

Due to directives relating to the Coronavirus, we are not currently conducting in-person client meetings. We continue to offer a full suite of client services, but do so remotely in order to ensure the safety of our employees and clients.

Energy Law Blog

Colorado Case Law Update on the Duhig Rule

The Colorado Court of Appeals recently decided a case involving an apparent over-conveyance of mineral interest. Moeller v. Ferrari Energy,…

Effect of Mineral Liens on Leasehold Interests

In both Colorado and Wyoming, mineral lien statutes permit materialmen and other service providers to place liens on oil and…

BLM Provides Relief for Oil and Gas Operators on Federal Lands

As a result of the response to COVID-19, the demand for oil and gas has dropped dramatically, and with it…

Estate Planning Blog

Probate is the process by which an individual’s property is transferred after death. Colorado has adopted the…

Five years ago, the Supreme Court delivered a landmark decision for the LGBTQIA+ community, holding that…

Wills are one of the most common estate planning tools; however, wills do not always address every…

Contact Us

Get in touch

Tjornehoj & Hack LLC

636 Coffman St #301

Longmont, CO 80501

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