Who makes the rules depends on whether you're in town or in the county

The address on an Ouray County property does not tell you the whole story about who sets the rules. The towns of Ouray and Ridgway have their own town governments. The land between and around them is unincorporated, which means it answers to the county.

Colorado has two kinds of counties. Most, including Ouray County, are statutory counties: they operate under the powers state law gives them, rather than under a locally written home-rule charter. For a property owner the practical takeaway is simpler than the label. On unincorporated land, the county is the one handling things like zoning, building permits, driveways and access, and land division.

“Unincorporated” does not mean “anything goes.” The county runs a land use code that covers what can be built where and how parcels can be split, and there may be additional layers like private covenants or a road agreement on a given subdivision. Two parcels that look similar can sit under different rules.

So before assuming what you can build, add, or subdivide, check which jurisdiction the parcel is in and read that jurisdiction’s rules. For land outside the towns, that means the Ouray County land use code; the Colorado Department of Local Affairs explains the broader difference between statutory and home-rule local governments.