Denver housing officials finally have zeroed in on how much they expect Mayor Mike Johnston’s All In Mile High homelessness initiative to cost the city on an ongoing basis: $57.5 million a year. It’s taken the Johnston administration almost a year to arrive at that budget estimate — which doesn’t include one-time start-up costs — much to the chagrin of some City Council members. “If we serve 2,000 people, which is what we anticipate serving, that is about a per-person cost of $28,750 per person.