Extraterrestrial real estate

Extraterrestrial real estate refers to claims of land ownership on other planets, natural satellites, or parts of space by certain organizations or individuals. Most claims on extraterrestrial real estate have not been recognized by any authority, and have no legal standing. Nevertheless, some private individuals and organizations have claimed ownership of celestial bodies, such as the Moon, and have been involved in "selling" parts of them through certificates of ownership termed "Lunar deeds", "Martian deeds" or similar.

While personal claims have had little weight, whole states could potentially lay claim to colonizing celestial bodies. Extraterrestrial real estate not only deals with the legal standpoints of potential colonization, but how it could be feasible for long-term real estate. There are multiple unique factors to consider in extraterrestrial real estate, including transportation, planetary protection, sustainability, astrobiology, how an extraterrestrial real estate market could function, and orbital real estate.