Golden holds the county seat, a state university campus, and a large stock of public buildings, parks, and trails. Who owns the ground you fell on changes the rules and shortens the clock.
Claims against public entities run under the Colorado Governmental Immunity Act rather than ordinary premises rules. A written notice of claim must be filed within 182 days of discovering the injury under C.R.S. 24-10-109.
That notice is a jurisdictional prerequisite. Miss it and the claim is barred regardless of how strong the underlying facts are.
Immunity is waived only in defined situations. Those include a dangerous condition of a public building, and snow and ice blocking public access on walks leading to a public building open for business, where the entity had actual notice and a reasonable time to act.
The limits cut the other way too. Public entities keep immunity for injuries caused by the natural condition of unimproved property, which matters along Clear Creek, on open space, and on the trails above town.
A fall on a maintained walk outside a public building and a fall on an unimproved hillside are not the same claim. Sorting that out early is the difference between a live case and a dead one.