During the 1980s, Benz became active in environmental and historic preservation in
Sarasota, Florida. She joined the
Sarasota Alliance for Historic Preservation, Inc. shortly after Veronica Morgan founded the organization in 1984, and has served in several positions among its officers as well as being a director of the organization over the years. Kafi Benz and Dudley E. DeGroot conducted archaeological research to document historical and prehistorical aspects of two endangered properties that were listed on the
National Register of Historic Places—the
El Vernona Hotel (built by
Owen Burns in 1925 and later renamed to John Ringling Hotel) and
Seagate (a fishing retreat built for Gwendolyn and
Powel Crosley Jr. in 1929) during efforts to protect the historic properties from demolition. Jerris Foote participated in both projects. Toward the end of the decade, Benz participated in documentation of other archaeological and historical sites. She was cited as a special contributor to the survey of archaeological, historical, cultural, and natural resources in the coastal areas of Sarasota County that was conducted by the Florida department of environmental regulation, as well as for recommending sites deserving further research. In the late 1980s, Benz founded
Friends of Seagate Inc., which championed the preservation of the remaining portions of
Seagate, a subdivision platted in 1925 that became the Crosleys' estate in 1929. The property was sold to the Horton family in 1948, and was purchased in the late 1970s for development into a club-based condominium project by the
Campeau Corporation. Although the property had been listed on the
National Register of Historic Places in 1982, little protection is afforded through listing and Benz's concerns were for both historic preservation and environmental conservation. Unfortunately, the condominium market in Florida had collapsed shortly after Campeau acquired the property and the ambitious plans to use the 1929 home and auxiliary buildings as the clubhouse and headquarters of the development were never realized. Work permits were kept alive by intermittent, but unrelated and minimal construction by Ron Royal until the corporation began to collapse. That collapse led to the demise of many of the most
prestigious department stores in America—such as
Bonwit Teller—having been acquired by the failing
Federated Department Stores division that had become part of Campeau. The Seagate property changed hands several times with several inglorious plans submitted for redevelopment that met with opposition until Friends of Seagate was founded and Benz's campaign for acquisition was begun, that resulted finally, in public acquisition. In 1990 the property was acquired by the state of Florida with a division into two portions, the bay front residence and being overseen by Manatee County and the much larger, eastern portion of the property along
Tamiami Trail being overseen by
New College and
University of South Florida until their separation and the resulting development of this portion into a new campus only for the satellite, commuter campus of the university. Following the public acquisition of the property, the objectives of Benz's organization were expanded to broader preservation issues involving archaeological, artistic, cultural, environmental, and historical aspects of the region.
Lake Underwood, a patron to Friends of Seagate, provided much of the funding and equipment for the expansion of the organization. In 2002, Benz also led Friends of Seagate Inc. in its commitment as the nonprofit environmental entity to hold land in a partnership with the
Sarasota municipal government as the eligible local governmental entity, applying for a state grant for funding through the
Florida Forever Program, (Florida's premier conservation and recreation lands acquisition program) amounting to $1,505,625 for acquisition of ''Rus in Ur'be'', a large land parcel in the center of the Indian Beach Sapphire Shores neighborhood, as a neighborhood park. The parcel includes more than and contained a great deal of wooded and undeveloped land,
wetlands, a tennis court, and a
Sarasota School of Architecture structure that served as a private clubhouse or recreational lounge for a bay front home opposite it on Bay Shore Road that had been sold separately from the house and held for a long time by a developer. The clubhouse was roofed with glazed blue Japanese
ceramic tiles, used
pecky cypress timbers for
framing, and had expansive glass partitions along the western
elevation, facing the tennis courts. The project retained its status among those not able to be included for state funding in that cycle, but was sold for private development before the next cycle began. The structure was demolished and the tennis courts destroyed,
plats for development with single family homes were surveyed, and a private road paved through the parcel, but no structures were built prior to the downturn of the real estate market as the speculation boom of the 1990s and 2000s collapsed. Several development projects have been proposed for the parcel. The property remained undeveloped through the next decade and often was identified as a likely location for a neighborhood park as other efforts continued. In 2014 the property was acquired out of foreclosure and became destined for residential development. An initiative to give Florida voters the opportunity to decide whether they desire to have a state constitutional amendment regarding clean waters placed on the ballot was launched in 2023, the
Florida Right To Clean Water. The initiative arose from a county charter that previously had passed by more than 89% in a local government election, but then had been undermined by state legislation preventing "home rule" that was designed to counter the ability of the county to follow the mandate by its voters. Some of those who had led the campaign for the county charter amendment extended the effort by pursuing a state constitution amendment that would overcome the suppression and additionally, extend a right to clean waters throughout the state. Benz recommended a change to the logo and provided her design for the new campaign. She also volunteered to serve as a local captain in the initiative. == Planning ==