San Juan County

San Juan County, Colorado presents one of the most extreme risk profiles in this dataset: a $553,482 median home price, a cash-flow score of zero, a cap rate of zero, and an affordability index of 19 out of 100. The investment estimate fields for monthly mortgage, estimated expenses, estimated cash flow, and cash-on-cash return all return zero, which is not a data gap, it is the model's signal that conventional buy-and-hold underwriting simply does not close here. With a population of 690, this is one of the least populated counties in Colorado, ranked 751st out of 1,000 counties nationally and sitting in the 4th percentile overall. The appreciation score of 49 is middling at best, and home prices are essentially flat, down 0.15% year-over-year. There is no rent data surfaced for this county, which itself tells you something about the depth of the rental market.

This market does not suit a cash-flow buyer or a value-add operator. There is no rental infrastructure to add value to, and the population base of 690 people means tenant demand is structurally thin regardless of how a property is repositioned. An appreciation buyer might look at the 49 appreciation score and the remote mountain setting and construct a thesis around scarcity, but the year-over-year price decline of 0.15%, combined with the county's ranking in the bottom 23 of 62 Colorado counties, does not support a near-term appreciation bet either. If there is a use case here, it is the niche short-term rental or seasonal recreation play, but that is a different underwriting model entirely, one that depends on tourism occupancy rates and platform exposure, neither of which this data addresses. On the numbers provided, no conventional long-term rental strategy pencils.

No economic anchors or employer data were provided for San Juan County. Given the population of 690, the county almost certainly lacks the diversified employment base that stabilizes rental demand in larger markets. A median household income of $67,344 is not low in absolute terms, but an affordability index of 19 against a $553,482 median home price illustrates the disconnect: this market's price level is wildly out of reach for local wage earners, which creates a compressive ceiling on what rents the local labor force can support. That dynamic is a structural problem for any landlord trying to underwrite to local tenants rather than to seasonal or destination visitors.

On carry costs, the tax picture is actually a tailwind relative to most Colorado markets. Using Colorado's state-average effective rate of 0.51%, the estimated annual property tax is $2,823, and with insurance estimated at $1,826 annually, the combined monthly tax and insurance burden is $387. That is low for a $553,000 asset. The low property tax flag is accurate: a 0.51% rate is a genuine underwriting advantage compared to states where the same price point would generate two to three times that annual tax bill. Note the honest caveat that this is a state-average effective rate from Tax Foundation 2024 data, and actual San Juan County or township rates may differ. Even so, the favorable tax rate does not salvage the cash-flow math when there is no functioning rental market to generate the income side of the equation.

The core risk here is concentration, or more precisely, the near-total absence of it. A rental portfolio in a county of 690 people has essentially no tenant pool diversification. One vacancy is not a 5% problem, it can be a 100% problem depending on how many units an investor holds. There is no data here on regulatory environment or short-term rental restrictions, but investors should research Silverton, the county seat, directly before committing capital, since mountain towns with small populations have increasingly moved to cap or prohibit short-term rentals as housing pressure mounts, even at this scale.

Compared to the neighbors surfaced in this dataset, San Juan County is the weakest option for a buy-and-hold investor by every available metric. Arapahoe County offers a $507,157 median price with a rent-to-price ratio of 0.00423, providing at least a functioning rental market with real data. Larimer County at $542,283 median and a 0.00416 rent-to-price ratio gives you a Fort Collins-anchored market with a tenant base orders of magnitude deeper. Chaffee County and Archuleta County both carry higher median prices than San Juan but also have surfaced rent data and functioning rental markets. Every neighbor in this comparison set scores the same 40 overall, but they all have actual rent figures and recognizable tenant populations. Choose San Juan County over its neighbors only if your investment thesis is explicitly outside conventional buy-and-hold, you have a specific short-term rental or recreational property strategy, and you have done ground-level diligence on local ordinances and seasonal occupancy that this data does not capture.