free-standing house; detached house
Refers to a single, independent house, not part of a larger building or complex. Often used in real estate or when describing a property.
I'm renting a free-standing house a ten-minute walk from the station.
Used for a distinct group or cluster of things, especially trees or plants. Less common than the house sense.
A clump of bamboo is growing in the corner of the garden.
Compound of 一 (ひと, 'one') and 構え (かまえ, 'structure' or 'posture'). The exact historical derivation is uncertain, but it likely refers to a single, self-contained entity.