A condominium is a single unit of real estate—usually a home or residence—in a multi-unit residential development in which each owner of a unit has both a separate ownership interest (often everything inside the front door)—and a common ownership interest (with other unit owners) in the common areas of the property outside the front door—such as roofs, hallways, driveways, walkways, stairways, stucco, brick, paint, stone, and landscaping.

A condominium development is usually governed by a homeowners’ association (HOA) through its board of directors, elected by the homeowners as provided by the HOA’s declaration and bylaws. Unit owners or homeowners in the association are required to pay monthly HOA dues for the maintenance and repair of the common areas of the property and its insurance.

In New Hampshire, condominiums are regulated under the New Hampshire Condominium Act (RSA 356-B). This act outlines the creation, alteration, management, and termination of condominium regimes. Each condominium unit owner has an exclusive ownership interest in their unit and a shared interest in the common areas of the property, such as roofs, hallways, and landscaping. The governance of a condominium is typically handled by a homeowners' association (HOA), which operates through a board of directors elected by the unit owners. The HOA is established according to the declaration and bylaws of the condominium, which set forth the rules for management and operation of the common areas, as well as the rights and obligations of the unit owners. Unit owners are generally required to pay monthly dues to the HOA for the upkeep, maintenance, and insurance of the common areas. These regulations ensure that the property is well-maintained and that the rights and responsibilities of all parties are clearly defined.