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| Measure A (Marin County, 1973) | |
|---|---|
| Name | Measure A (Marin County, 1973) |
| Location | Marin County, California |
| Adopted | 1973 |
| Subject | Open-space preservation, growth control |
| Outcome | Passed |
Measure A (Marin County, 1973) was a 1973 land-use ballot initiative in Marin County, California that established strict limits on urban development and created durable protections for agricultural and open-space land. The measure intersected with debates involving George Moscone, Jerry Brown, Ronald Reagan, Pat Brown, and local figures such as Gordon Clark and engaged organizations including the Sierra Club, Nature Conservancy, Audubon Society, Trust for Public Land, and the Marin Agricultural Land Trust. It became a landmark in the history of California Proposition 13-era land-use politics and influenced later measures such as Measure Y (San Francisco), Measure AA (San Francisco Bay), and statewide initiatives like California Environmental Quality Act reform efforts.
In the late 1960s and early 1970s, Marin County sat adjacent to San Francisco, Oakland, San Rafael, and transportation corridors like U.S. Route 101, attracting suburban expansion tied to growth in Silicon Valley and the Greater Bay Area. Rising concern among residents, civic groups, and conservationists echoed earlier preservation struggles around Point Reyes National Seashore, Mount Tamalpais, and battles over projects championed by figures connected to the Golden Gate National Recreation Area movement. National debates involving the National Park Service, Environmental Protection Agency, and judicial decisions such as those in Sierra Club v. Morton framed local disputes. Local planners referenced zoning precedents from Porter Ranch, land trusts modeled on the New York State Department of Environmental Conservation approaches, and the burgeoning environmental jurisprudence shaped by Earth Day (1970), Clean Air Act, and Endangered Species Act conversations.
Measure A enacted countywide constraints by creating a voter-approval requirement for rezoning of agricultural and open-space lands, establishing urban growth boundaries similar to those advocated by Andrés Duany and echoing earlier regional concepts from Ebenezer Howard-inspired planners. It specified parcelization limits, protections for parcels like those near Lagunitas Creek and Tiburon Ridge, and mechanisms for acquisition by entities modeled on the The Trust for Public Land and local park districts such as the Marin County Open Space District. The initiative mandated that amendments to the county general plan affecting designated lands could occur only via countywide referendum or supermajority, invoking procedural models used in Los Angeles County Measure A (1986). It created enforcement pathways that referenced administrative tools similar to those in California Coastal Act permit regimes and contractual conservation easements employed by the Land Trust Alliance.
The campaign featured coalitions of environmental groups, agricultural interests, and community organizations, with endorsements from the Sierra Club, Marin Audubon Society, and national figures tied to The Nature Conservancy; opponents included development interests, real estate firms associated with Coldwell Banker, and some municipal officials from Novato and San Rafael. Public forums saw speakers referencing case studies in Sonoma County, legal scholars from University of California, Berkeley, and economists influenced by writings in The New York Times and analyses from RAND Corporation. Media coverage by outlets like the San Francisco Chronicle, San Jose Mercury News, and national publications such as The New York Times and Time (magazine) framed the measure within the larger post-Proposition 13 (1978) taxation and growth-control debates, while community activists compared the effort to preservation victories at Point Reyes and controversies involving Bunker Hill redevelopment.
After passage, Measure A prompted litigation invoking constitutional doctrines articulated in cases such as Penn Central Transportation Co. v. New York City and spurred challenges under state rules referenced in California Government Code provisions. Courts weighed voter initiative power against property-rights claims advanced by developers and associations modeled on the California Building Industry Association. The measure influenced county charter revisions and was cited in decisions by the California Supreme Court and federal district courts considering takings claims under Fifth Amendment to the United States Constitution jurisprudence. Politically, it became a touchstone in campaigns for Marin County Board of Supervisors seats and influenced statewide politicians including Dianne Feinstein and Barbara Boxer when framing environmental credentials.
County agencies, including the Marin County Community Development Agency and the Marin County Open Space District, operationalized Measure A through amendments to the county general plan, parcel maps, and conservation easements negotiated with entities like the Trust for Public Land and private landowners. Enforcement relied on administrative hearings before planning commissions and litigation handled by county counsel drawing on precedents from California Environmental Quality Act case law. Funding for acquisitions and easements combined local bond measures, grants from the California Wildlife Conservation Board, and philanthropic grants from foundations linked to Gordon and Betty Moore-era conservation philanthropy. Implementation required coordination with state agencies such as the California Coastal Commission when coastal parcels were implicated and with federal agencies for lands adjacent to Point Reyes National Seashore.
Measure A is frequently cited in academic literature from institutions including Stanford University, University of California, Berkeley, and Claremont Graduate University as an early example of durable voter-driven growth control that shaped subsequent regional conservation strategies like the Bay Area Ridge Trail and influenced formation of land trusts nationwide. Its legacy appears in comparative studies with Oregon Senate Bill 100 (1973), municipal growth boundaries in Portland, Oregon, and conservation zoning in Westchester County, New York. Measure A informed debates over transferable development rights in places like New York City and Los Angeles County, and its model has been adapted by localities seeking to balance development and preservation, including initiatives in Sonoma County, Santa Clara County, and Monterey County. Scholars connect Measure A to broader trends involving the Land Trust Alliance, the rise of local initiative processes, and shifts in political coalitions that remade California land-use policy in the late 20th century.
Category:Marin County, California Category:Land use in California