The house is constructed entirely of unreinforced cast-in-place concrete and it is one of the oldest and largest structures in the state using this building method.

[3] A large part of the "Park's concrete" mix was caliche, a thick deposit of gravelly clay that underlies Seguin.

The caliche was then mixed with sand, lime made from nearby limestone deposits, and organic materials like straw or horsehair.

The exterior walls were usually whitewashed, and the interiors often had woodwork or wainscoting of local walnut, oak or pecan.

Zorn was mayor of Seguin from 1890 to 1910, and played a major role in establishing the first system of free public schools in the town.