—whether those tanks are buried underground or mounted on the rooftops—together with the piping laid out to distribute the water, and the climate-control units fixed in their places for air-conditioning or for heating the water. The sale likewise covers any trees or cultivated plants within the premises, the canopies erected there, and even the solid mineral deposits that lie beneath the ground of the property.

By contrast, whatever has merely been placed in the house and remains separate from it is not included in the sale: planks of wood, ropes, vessels, detachable furnishings, and anything buried in its soil for safekeeping, such as stones, buried treasure, and the like. None of these items enter into the sale because they are detached from the house and therefore do not fall under its designation—except for things that serve its utility, such as keys, which follow the property even though they are not physically attached to it.

When a tract of land is sold, the transaction includes everything permanently affixed to it, such as planted trees and buildings. The same applies when an orchard is sold: the sale covers its soil, its trees, its surrounding walls, and any dwellings it contains. If the land being sold holds a crop that is harvested only once—such as wheat or barley—that crop belongs to the seller and is not part of the contract. However, if it contains a crop that can be mown repeatedly, like clover, or picked many times, such as cucumbers or eggplants, then the roots pass to the purchaser as an appurtenance of the land, while the standing cutting or the visible picking present at the moment of sale belongs to the seller.

All of the foregoing distinctions as to what remains with the seller and what passes to the buyer upon the sale of principal property apply only when no special stipulation exists between them,