Building easements are obligations under public law imposed on property owners to perform, tolerate, or refrain from certain actions regarding their property that are not already required by public law regulations. This enables the expansion of construction or use on another property.

Building easements are assumed by means of a written declaration submitted to the building authority. The signature must be notarized, provided by a surveying office, or made or acknowledged before the building authority.

Building easements take effect upon entry in the building easement register, without prejudice to the rights of third parties. Building easements remain in force even upon the sale of the property and are therefore binding on legal successors.

A building easement is extinguished by a written waiver from the building authority. The waiver must be declared if there is no longer a public interest in the building easement. Prior to the waiver, the obligor(s) and the beneficiaries of the building easement must be heard. The waiver takes effect upon the removal of the building easement from the building easement register.

The building encumbrance register is maintained by the building authority. Other obligations under building law imposed on the property owner regarding actions, tolerances, or omissions pertaining to his or her property, as well as conditions, time limits, and reservations of revocation, may also be entered in the register of building encumbrances.

Any person who demonstrates a legitimate interest may inspect the register of building encumbrances and obtain copies thereof.