Citizen Initiatives Cannot Amend Planned Unit Development (PUD) Agreements: PUD Amendments Are Administrative, Not Legislative

Case: Kavanaugh v. Telluride Locals Coal. Petitioners' Comm., 2026 CO 47 (Colo. Jun 15, 2026)
Court: Colorado Supreme Court (en banc)  |  Author: Justice Berkenkotter

1. Introduction

This decision addresses a recurring tension in Colorado local governance: the people’s constitutionally reserved initiative power versus a municipality’s administrative authority over complex land-use instruments. The dispute arose after Telluride approved the “Butcher Creek” planned unit development (PUD) in 1995 under Colorado’s Planned Unit Development Act (the “PUD Act”), §§ 24-67-101 to -108, C.R.S. (2025). The Town and developer Brighton Properties, LLC entered into a PUD Agreement setting detailed lot-by-lot restrictions and designating Lot A as common open space.

After selling all lots except Lot A, Brighton sought to develop that lot. When the Town declined an eighth amendment request because Brighton lacked the consent required by the Agreement’s amendments clause, Brighton pursued a ballot initiative to “amend” the PUD Agreement and rezone Lot A to allow development. The core legal issue became whether such a PUD Agreement amendment is “legislative in character” (and thus subject to initiative) or instead administrative/quasi-judicial (and thus beyond the initiative power).

Holding (new rule/clarification): Amendments to PUD agreements are not legislative in character and therefore are not a proper subject of the initiative process. A municipal PUD enabling ordinance is legislative, but the review/approval of a PUD application and subsequent amendments to a PUD agreement are administrative acts that implement the enabling ordinance and require site-specific, expertise-driven judgments.

2. Summary of the Opinion

The Colorado Supreme Court reversed the court of appeals and held that Brighton’s proposed initiative could not proceed because it sought to amend a specific PUD agreement, which is an administrative act rather than legislation. The Court emphasized the PUD Act’s structured method for creating and changing PUDs and concluded that initiatives may not be used to bypass that statutory and contractual process. It remanded for further proceedings, including consideration of the reasonableness of the Town’s request for attorney fees.

3. Analysis

3.1 Precedents Cited

The Court’s analysis is built from three doctrinal strands: (i) the legislative-only scope of the initiative power; (ii) the legislative/administrative distinction in municipal decision-making; and (iii) the statutory nature and purpose of PUD zoning.

A. Initiative power is limited to legislative acts

  • Vagneur v. City of Aspen, 2013 CO 13: The Court reaffirmed that the initiative power “vest[s] only legislative power in the people” and cannot be used for administrative or quasi-judicial decisions. It also stressed that the legislative/administrative inquiry is case-by-case and guided by underlying principles rather than any single mechanical test. The Court in Kavanaugh relies on Vagneur to characterize attempts to mandate a specific, technical, site-specific outcome as administrative—especially where the initiative would “circumvent a complex and multi-layered administrative process.”
  • City of Aurora v. Zwerdlinger, 571 P.2d 1074 (Colo. 1977): Provided the classic formulation: legislative acts are “permanent and general,” often declaring public policy; administrative acts are “temporary” and “necessary to carry out existing legislative policies.” The Court uses this framing to distinguish the Town’s enabling ordinance (general rules for all PUDs) from the amendment of one PUD agreement (implementation).
  • City of Idaho Springs v. Blackwell, 731 P.2d 1250 (Colo. 1987) (quoting Witcher v. Canon City, 716 P.2d 445 (Colo. 1986)): Held that selecting a specific city hall site/structure was administrative because it implemented an existing policy decision to build a city hall. The Court in Kavanaugh analogizes PUD amendments to similarly specific implementation decisions.
  • People v. Barth, 981 P.2d 1102 (Colo.App. 1999): Cited for separation-of-powers principles (no branch may exercise powers properly belonging to another). In this case, the initiative is treated as a legislative power that cannot invade administrative authority.

B. Zoning is often legislative—but this case draws a key boundary

  • Margolis v. District Court, 638 P.2d 297 (Colo. 1981): The court of appeals relied heavily on Margolis for the proposition that zoning/rezoning are “legislative matters subject to the initiative power.” The Supreme Court distinguishes it: Margolis addressed “original zoning decisions” (and general rezoning actions in the ordinary zoning framework), while Brighton’s initiative sought to amend a single, existing PUD agreement governing one lot designated as open space. The Court accepts that a PUD is “a form of zoning,” but holds that amending the PUD agreement is not the kind of legislative zoning contemplated by Margolis.
  • Telluride Locs. Coal. Petitioners' Comm. v. Kavannaugh, 2024 COA 69: Reversed by the Supreme Court. The division’s reasoning—treating the PUD amendment as legislative rezoning—was rejected as insufficiently attentive to the PUD Act’s three-step structure and the administrative character of site-specific PUD amendments.

C. Amendments to contractual arrangements are treated as administrative

  • Witcher v. Canon City, 716 P.2d 445 (Colo. 1986): Held an initiative could not be used to amend a lease because it would merely “carry out” previously established policy rather than create a new generally applicable rule. The Court uses Witcher to reinforce that where the governmental act concerns modification of binding contractual obligations (here, the PUD Agreement), it is administrative, not legislative.

D. The statutory and conceptual backdrop for PUDs

  • Tri-State Generation & Transmission Co. v. City of Thornton, 647 P.2d 670 (Colo. 1982): Cited for the idea that PUDs arose to address shortcomings in traditional Euclidian zoning and provide flexible, site-adapted planning. This supports the Court’s emphasis on technical, tract-specific review and ongoing administrative management.
  • Whatley v. Summit Cnty. Bd. of Cnty. Comm'rs, 77 P.3d 793 (Colo.App. 2003): Cited for criteria relevant to PUD amendments under § 24-67-106(3)(b), including consistency with the existing PUD and limits on harm to abutting properties/public interest. The citation underscores that amendments are constrained, evaluative determinations rather than broad policy-making.
  • Village of Euclid v. Ambler Realty Co., 272 U.S. 365 (1926): Mentioned as the origin of “Euclidian zoning,” highlighting the contrast between rigid zoning districts and the flexible, negotiated PUD model—again reinforcing the administrative character of PUD implementation and modification.
  • Carter v. Lehi City, 269 P.3d 141 (Utah 2012), and Whitehead v. H & C Dev. Corp., 129 S.E.2d 691 (Va. 1963): Quoted in Vagneur v. City of Aspen and Zwerdlinger, respectively, for the principle that legislative acts rest on broad policy grounds, while executive/administrative acts often turn on individualized, case-specific considerations.
  • Campion v. Bd. of Aldermen, 899 A.2d 542 (Conn. 2006): Cited for descriptive context on Euclidean zoning’s stability goals and comparative inflexibility.

3.2 Legal Reasoning

The Court’s reasoning turns on structure: the PUD Act creates a three-step framework with different governmental functions at each step. The Court classifies those steps by constitutional character (legislative vs administrative), then locates Brighton’s initiative within the administrative category.

  1. Step 1 (Legislative): Adoption of a PUD enabling ordinance.
    Under §§ 24-67-104 and 24-67-105, a municipality must first enact a PUD enabling ordinance setting general development standards (density/intensity, minimum acreage/units, sequencing, etc.). The Court treats this as classic legislation: it promulgates generally applicable rules and “broad public policy.”
  2. Step 2 (Administrative): Site-specific review and approval of a PUD application and execution of a PUD agreement.
    Once standards exist, the municipality evaluates whether a particular tract’s proposal satisfies them—an implementation task requiring “specialized knowledge” and “case-specific considerations” (e.g., geologic hazards, flood impacts, groundwater, transportation systems, view corridors). Approval culminates in a PUD agreement embodying those negotiated, site-specific conditions.
  3. Step 3 (Administrative): Amendment of the PUD agreement pursuant to § 24-67-106(3)(b).
    The PUD Act prohibits substantial modification/removal/release of plan provisions unless specific criteria are satisfied after notice and a public hearing. The Court reads this as a constrained, evaluative administrative process—one that ensures consistency with the existing PUD and protects abutting properties and the public interest.

With that classification in place, the Court explains why Brighton’s initiative fails the legislative-character test:

  • Not a rule of general applicability. The initiative would change the governing terms for a single lot (Lot A) within one PUD. Under Vagneur v. City of Aspen, legislative action is “the promulgation of laws of general applicability,” whereas this proposal is a case-specific directive.
  • Implementation, not policy-making. The initiative attempts to alter how the Town executes preexisting land-use policy embedded in the enabling ordinance and the PUD Agreement. Under City of Aurora v. Zwerdlinger, actions “necessary to carry out existing legislative policies and purposes” are administrative.
  • Procedural and substantive circumvention. The initiative would sidestep both (i) the PUD Act’s amendment mechanism requiring a public hearing and statutory findings, § 24-67-106(3)(b), and (ii) the PUD Agreement’s amendments clause requiring consent of all parties/successors. The Court treats this as an improper invasion of administrative authority—analogous to the initiative rejected in Vagneur v. City of Aspen for attempting to override a complex administrative process.
  • Distinguishing zoning cases. The Court narrows the reach of Margolis v. District Court in the PUD context: while original zoning decisions may be legislative, a targeted amendment of a single existing PUD agreement—particularly one interlaced with technical criteria and contractual commitments—is not.

3.3 Impact

The decision is likely to have immediate and durable consequences for Colorado municipal land-use law and direct democracy:

  • Bright-line constraint on land-use initiatives involving PUD agreements. After Kavanaugh, citizen initiatives cannot be used to amend a PUD agreement—effectively channeling proposed changes into the statutory amendment process under § 24-67-106(3)(b) and whatever contractual amendment terms govern the PUD agreement.
  • Re-centers “general applicability” as the touchstone in municipal initiative disputes. The Court reinforces Vagneur v. City of Aspen’s emphasis on whether a proposal sets a governing standard for all cases within its terms, rather than merely deciding a particular project outcome.
  • Protects negotiated land-use bargains and reliance interests. By classifying amendments as administrative and acknowledging the PUD agreement’s binding character, the decision reduces the risk that electorates can retroactively re-trade—or unilaterally rewrite— site-specific PUD commitments through the ballot.
  • Practical effect for developers and opponents. Developers cannot use initiatives to bypass amendment prerequisites (including consent provisions) and opponents likewise cannot use initiatives to impose or block PUD agreement changes. Disputes will more often be fought within administrative hearings, contractual interpretation, and judicial review of statutory compliance.
  • Guidance beyond municipalities. The Court notes the PUD Act applies to municipalities and counties, and that its reasoning “extends to counties as well,” signaling broader statewide application.

4. Complex Concepts Simplified

  • Initiative power (Colorado Constitution art. V, § 1): The people can propose and vote on laws. But that power is limited to making “laws” (legislative acts), not managing governmental administration.
  • Legislative vs administrative acts: Legislative acts set general rules/policies for the future (think: adopting a code or standards applicable to many situations). Administrative acts apply those standards to particular facts (think: approving or modifying a specific project based on technical criteria).
  • Quasi-judicial: A decision that resembles adjudication—applying existing standards to a specific set of facts after notice/hearing. Even if hearings occur, an action can still be legislative in some contexts (as noted in Margolis v. District Court), but in this case the Court treats PUD agreement amendments as administrative implementation.
  • PUD enabling ordinance vs PUD agreement: The enabling ordinance is the municipality’s general rulebook for all PUDs (legislative). The PUD agreement is the site-specific, negotiated instrument that locks in conditions for a particular tract (administrative/contract-like).
  • Euclidian zoning: Traditional zoning that divides land into districts with fixed permitted uses (derived from Village of Euclid v. Ambler Realty Co.). PUDs are meant to be more flexible and tailored to a site.

5. Conclusion

Kavanaugh v. Telluride Locals Coal. Petitioners' Comm. establishes a clear limit on Colorado’s municipal initiative power in the PUD context: while adopting a PUD enabling ordinance is legislative, amending a PUD agreement is administrative and therefore cannot be accomplished through a ballot initiative. The Court’s framework is grounded in separation of powers, the “general applicability” hallmark of legislation, and the PUD Act’s three-step scheme that requires technical, site-specific administration—particularly when changing negotiated, contract-like PUD commitments.