The city of Portland has been promoting the construction of Accessory Dwelling Units (ADUs), which are tiny dwelling spaces that people add to their homes, in order to save space and energy. But according to a new piece in the Portland Tribune today, the county’s approach to those structures have led to dramatically higher property taxes.

Portland Tribune reporter Steve Law cites a specific example of a Portland resident whose property taxes went from $1,225 to $7,286. We’ll talk with him on the show today about his piece explaining the issue. The article says that while city planning authorities have encouraged homeowners to build these ADUs —  or “granny flats” — on their lots, county appraisers have then re-valued those homes as “new construction,” blindsiding residents with skyrocketing tax bills. We’ll talk with him in our studio to learn more.