Background
Three-K-Nine, a Texas LLC, sought a building permit to construct an 11,300-square-foot single-family residence near Telluride in unincorporated San Miguel County. The County assessed an employee housing impact fee of $742,245 based on updated fee methodology adopted in 2022 (Resolution 2022-031), which replaced the county’s fee structure that had been in place since 2007. The fee was eventually reduced to $252,843 after accounting for a retroactive 50% reduction and modifications to the building plans. Three-K-Nine paid the fee but reserved its right to challenge it.
Three-K-Nine filed suit seeking declaratory judgment that the 2022 resolution and a 2023 amendment (Resolution 2023-09) violated Colorado’s impact fee statute, C.R.S. 29-20-104.5. The district court granted summary judgment in favor of the County, finding the new methodology complied with the statute. Three-K-Nine appealed.
The Court’s Holding
The Colorado Court of Appeals affirmed, holding that San Miguel County’s revised employee housing impact fee methodology complies with section 29-20-104.5. The county replaced its prior flat-rate approach with a Market-Affordability Gap (MAG) method that considers three factors: (1) an employee generation rate based on studies from 2000 and 2005; (2) the gap between what average employees can afford and actual housing costs in the Telluride area; and (3) a mitigation percentage reflecting the portion of affordable housing need attributable to new development.
The court rejected Three-K-Nine’s argument that the methodology was outdated and failed to quantify reasonable impacts. The court noted that the statute requires only “reasonable impacts” and “rough proportionality,” not mathematical precision. Because Three-K-Nine failed to explain specifically how updated data would change the calculation or demonstrate the methodology was inherently unsound, it failed to carry its burden of proving invalidity. The court emphasized strong judicial deference to local legislative discretion in fee-setting, following precedent that methodology will not be set aside unless “inherently unsound.”
Key Takeaways
- Colorado courts apply strong deference to local governments’ fee-setting methodologies and will not overturn them absent showing they are “inherently unsound.”
- Section 29-20-104.5 requires fees to “reasonably” reflect development impacts; it does not mandate mathematical precision or require updating studies before adopting fee schedules.
- A developer challenging impact fees bears the burden of proving the methodology violates statutory requirements; generalized criticism without specific proposed alternatives is insufficient.
- Reasonableness of impact fee data need not be updated if presented evidence supports the older data’s continued validity.
Why It Matters
This decision clarifies the broad discretion Colorado municipalities possess in designing impact fee structures to address local conditions, particularly affordable housing shortages in high-cost communities. The ruling affirms that local governments need not commission new studies or employ outside consultants before updating fee methodologies, provided the approach is premised on some evidentiary foundation and legislative process. The decision reflects the court’s view that federal constitutional takings principles (Nollan/Dolan rough proportionality) and state statutory requirements allow considerable latitude in fee design.
For developers and municipalities alike, the decision underscores that challenges to impact fees require concrete, specific critiques—not broad methodological objections—and that courts will respect local policy choices even where experts might design alternative fee structures. The holding also signals that data derived from older studies may satisfy statutory requirements if not demonstrated to be obsolete, easing the burden on municipalities to continuously update underlying research.