ST stands for “Subject To”. It means that the property is the “Servient Tenement” – the party who is giving up the right. A property with ST in the legal description indicates that it has given up specific access rights to another party. TW stands for “Together With”, and represents the flip side of the easement right. A property with TW in its legal description signifies that this property has easement rights over a portion of another property. To illustrate the point, if your property has a small easement over your neighbour’s property, your property’s legal description will contain T/W because yours is the Dominant Tenement, which has gained the right. Your neighbour’s legal description will contain S/T because their property is the Servient Tenement giving up the right.