The Right of servitude grants the use of another's property for limited purposes. It is included in the Commercial and Civil Code of Thailand (CCCT), at sections 1387 to 1401. Section 1387 states that:
It originates from Roman Law, and was called servitus or servitutes. When people needed a shortcut to pass over the land of someone else, to get some water for example, a right of servitude was created.
A servitude allows the owner of a land to use or pass over the land of someone else. It's one of the rare Civil Law concept also known in Common Law. You might see it called "Right of ways", "Right of passage" or "easement". The concept of servitude was introduced later in Civil Law and Thailand adopted a Civil Code mostly based on French Civil Law.
A servitude usually involved two separate properties. It is basically a charge imposed on an immovable property called the servient land, in favor of another immovable property, called the dominant land. With a servitude, the owner of the servient land is required to tolerate certain acts of use by the owner of the dominant land or himself abstain from exercising certain rights inherent in ownership.
A servitude does not give the holder a right of possession. It only gives some privilege over a piece of land. You might need a servitude over a parcel of land to be sure that you can access a road or to be able to have access to some water or other utilities. You might also need a servitude to access a public road if your parcel of Land is surrounded by others.