Springhill

Who owns your roads

Boulder County owns the pavement. In 1995 the county stopped repaving subdivision streets in unincorporated Boulder County; it was sued over that decision and won on appeal. Its Public Works department states plainly that it “is unable to undertake large roadway repaving projects within unincorporated Boulder County subdivisions because the cost of this work is the responsibility of subdivision residents.”

Your HOA cannot simply fix them instead. The roads are county property, and the Colorado Common Interest Ownership Act bars an association from spending assessments on land it does not own.

What condition they are in

These scores come from the pavement survey Boulder County commissioned in 2025, done by IMS Infrastructure Management Services. They are measured, not estimated.

Pavement in square feet, including cul-de-sacs. Condition is the Pavement Condition Index: 100 is new, above 70 is excellent, 50–70 good, 25–50 marginal, below 25 poor.

What each option costs here

Three mechanisms can legally pay for Springhill’s roads. Priced on the same home — Springhill’s median of $1,597,550 — per year:

These are recurring costs, and they leave two things out. Colorado sources motor-vehicle tax to the buyer’s address, so a $35,000 car adds about $875 once — roughly $125 a year amortized — and remodel materials add about $44 in a year you remodel. Counting both, incorporation here is nearer $1,023. They sit outside the table because they are episodic rather than annual, and because the district rows have no equivalent: a district cannot levy a sales or use tax at all. Which way that is wrong is worth saying plainly — it understates what incorporation costs you, not what a district costs you.

The sales figure is the same for every home in Niwot, because it is what a typical household is modeled to spend — it tracks what you buy and how many of you there are, not what your house is worth. Only the property line moves with the home. That is the convention what it costs a household publishes, and holding it flat is a simplification: a smaller household really does spend less than this assumes. Put your own home value, spending and next vehicle purchase into the calculator rather than relying on this row. Property tax uses Colorado’s 6.8% residential assessment rate on value after the residential reduction, the same arithmetic the calculator runs. The district rows are property tax only, because that is the only tax a district levies. Mill levies come from the county’s 2025 unit costs.

What happens if nothing changes

Pavement does not hold still. Left untreated, every road in Springhill moves down the bands below — and the repair it needs gets more expensive at each step: a seal coat is $0.54 a square foot, a mill and overlay $2.44, a full rebuild $5.67.

Needs full rebuildNeeds mill & overlaySeal or crack-fill only

By 2024, most of Springhill’s pavement needs full-depth reconstruction — the most expensive category there is, and the one sealing cannot reach. That is not a forecast. It is already true.

Bands come from the committee’s road model, decaying each score forward at a straight-line rate below what Niwot’s own roads have actually shown. The multiplier compares the same model in the same dollars at both ends, so it is a ratio rather than a price.