Case Summary: Shear Development Co., LLC v. California Coastal Commission

The Coastal Commission denied a small infill housing project after it appealed the County’s permit approval to itself — twice reaching for jurisdictional hooks under the Coastal Act that didn’t hold up to judicial scrutiny.

The Supreme Court unanimously ruled the Commission had no appellate jurisdiction at all, on either ground it asserted, and reversed the judgment of the Court of Appeal. The Court directed the Court of Appeal to reverse the trial court order denying the petition for writ of administrative mandate and remand with directions to issue the writ directing the Commission to vacate its permit denial decision and dismiss the appeal for lack of jurisdiction.

Key Facts

• In 2003, Shear Development purchased eight residential lots in an already-developed part of Los Osos (San Luis Obispo County), near Morro Bay. The County approved an eight-home project in two phases.
• After completing four homes in phase one, Shear sought approval in 2017 to build the remaining homes. The County granted a coastal development permit in 2019.
• Two Commission members appealed the County’s approval to the Commission itself. The Commission asserted appellate jurisdiction on two grounds: (1) the site sat within a “sensitive coastal resource area” (SCRA) under the County’s Local Coastal Program (LCP), and (2) the project wasn’t designated as the principal permitted use of the site. The Commission then denied the permit on the merits, that no adequate wastewater was available for the project and the development did not adequately protect Environmentally Sensitive Habitat Area (ESHA) on the property.
• Shear sued for a writ of administrative mandate. The trial court and Court of Appeal both sided with the Commission on the SCRA issue.

What the Court Decided

1. Standard of review: Courts must review the Commission’s jurisdictional determinations de novo (independent judgment) — not for substantial evidence — whenever the dispute turns on interpreting an LCP rather than disputed facts. LCPs are enacted law, and legal interpretation gets independent review.
2. No deference to either agency: Where the Commission and a local government offer conflicting readings of the same LCP, courts apply the Yamaha deference factors to both sides. (See Yamaha Corp. of America v. State Bd. of Equalization (1998) 19 Cal.4th 1, 12-13.) If neither has a clear interpretive advantage — as here — courts owe deference to neither and decide the question themselves.
3. Not an SCRA: Applying independent judgment, the Court held the project site was not within the “Los Osos Dune Sands Habitat” sensitive resource area under the LCP version that existed at the time the Commission denied the project (both parties agreed that the project is not in an SCRA under the current LCP). The Commission’s reliance on a single ambiguous map (“Figure 6-3”) didn’t hold up against the old LCP’s text, structure, and drafting history.
4. “The” principal permitted use includes multiple designated uses: The Court held that Public Resources Code § 30603(a)(4)(A) — which gives the Commission appellate jurisdiction over development approved by a coastal county that is “not designated as the principal permitted use” — doesn’t require a site to have only one designated use to escape Commission appeal. Under the Code’s own “singular includes the plural” rule (§ 13), a development that matches any of a site’s several designated principal permitted uses is not appealable on this ground. Since single-family homes were one of three principal permitted uses for Shear’s lots, this appellate jurisdiction hook failed too.

The Result:

The Commission had no appellate jurisdiction on either asserted basis. Judgment reversed; the case goes back to the Court of Appeal with directions to issue the writ compelling the Commission to vacate its decision and dismiss the appeal.

Why This Matters

• Property owners and developers in the coastal zone now have a clearer, more litigable standard: when the Commission’s authority to even hear an appeal turns on interpreting an LCP, that’s a legal question courts will decide fresh — not a factual finding the Commission gets deference on. This narrows the Commission’s practical leverage in marginal jurisdictional calls.
• The “principal permitted use” holding is significant for infill and single-family projects in Counties. If County LCPs designate multiple principal permitted uses for a given zone, this ruling forecloses the argument that any project other than the single listed use is automatically appealable to the Commission.
• Local governments with LCPs gain a stronger footing when their LCP interpretation conflicts with the Commission’s, since neither entity is presumptively right — the outcome in court depends on which reading the text and record actually support.
• Practical caution: This decision doesn’t eliminate Commission appellate jurisdiction over coastal development generally — it applies where jurisdiction hinges on genuinely ambiguous LCP policy interpretations and multiple principally permitted uses in a county LCP. Projects within an unambiguous ESHA, tidelands, bluff-top, or major-public-works category, or that are the sole principally permitted use, remain squarely appealable. Clients should still expect fact-specific fights over whether a given site triggers one of the five statutory jurisdictional bases for a Commission appeal.

Please contact us for more information regarding how this decision may apply to a specific project or parcel.

This summary is for informational purposes and does not constitute legal advice.