The word gerbil is a diminutive form of  jerboa , though the jerboas are an unrelated group of rodents occupying a similar ecological niche.
A variance is a form of equitable relief that allows a property owner to bypass local zoning laws so they can use their land in the most efficient manner possible. When unusual circumstances make it difficult for a property owner to comply with local zoning laws, cities and counties may grant what are known as variances to allow property owners to circumvent the traditional zoning laws in an area.
Investment real estate is real estate that generates income or is otherwise intended for investment purposes rather than as a primary residence. It is common for investors to own multiple pieces of real estate, one of which serves as a primary residence, while the others are used to generate rental income and profits through price appreciation.