The remaining quarter of the open space is a single tract: South of the highest point, a 10.7-acre privately owned parcel runs from Pierce Street on the west up over the summit and down to Taft Street on the east slope. Most users treat this land as park, but the city has never negotiated a legal right-of-way allowing public access. In late 2019, this tract was listed for sale at $10 million. It is zoned for apartments or town homes, with a maximum density of nine units per acre. The city's Master Plan includes various policies regarding this parcel, including keeping the summit open, clustering development, providing a trail easement, protecting monarch butterfly habitat, minimizing grading, and protecting and restoring the hill's natural features, native vegetation, and wildlife.