About Us
An Exuberant Sense of What's Possible.

Jon and Amanda at an ADU build in Barrio Viejo

Jon brings expertise, tools, and site supervision to each project

Amanda Gattenby and Jon Goff in Merced at a modular installation

Jon and Amanda at an ADU build in Barrio Viejo
Unstoppable Construction, LLC is an Arizona licensed general contractor (ROC324504) and a passionate proponent of affordable and infill housing in Tucson. We specialize in building casitas and ADUs. We believe the power of building small can have a big impact on families in our community.
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Check us out in the March 2024 issue of Catalina Foothills Lifestyle magazine!
Amanda has over 20 years of experience in construction & development, and has helped produce over 1400 units of affordable housing, including groundbreaking projects using innovative construction methods. She's spoken at events, panels, and on podcasts and is considered a leading expert in the field of modular construction. She runs the contracts, accounting and is the primary client contact.
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Jonathan leads all operations in the field. With over 40 years in construction coming up through the trades in Tucson, he has worked on both historic and leading edge projects in the community. He has a vast knowledge of building code, means and methods, and is a master executor. His industry expertise is leveraged for our clients on a daily basis. Jon is in charge of all things schedule, sequence, and inspection related.