Subdivision of a large tract of land is primarily controlled by

Building codes regulate the construction and safety standards of buildings, but they do not govern the subdivision process itself. While important for ensuring structural integrity and safety, building codes apply to the physical construction of structures rather than the division of land into parcels.

While local market demands may influence development decisions and the types of subdivisions created, they do not have formal control over the subdivision process. The actual rules governing how land can be subdivided are laid out by local ordinances and state laws, making market needs an indirect factor rather than a controlling authority.

The Interstate Land Sales Full Disclosure Act primarily aims to protect consumers in interstate land sales by requiring disclosures and preventing fraud. However, it does not control the subdivision of land at the local level; this is managed by state and local regulations.