Sap-Ing-Sith: Thailand’s Registered Right to Use Immovable Property
Sap-Ing-Sith is a legal right created under the Sap-Ing-Sith Act, passed by Thailand’s National Legislative Assembly in February 2019 and effective from October 27, 2019. The name translates roughly to “a right attached to property,” and it was introduced to give both Thai and foreign parties a more flexible, transferable alternative to a standard lease.
What a Sap-Ing-Sith right covers
A Sap-Ing-Sith grants its holder the right to use an immovable property for a period of up to 30 years. It can only be created over:
- Land with a valid Chanote (full title deed)
- Buildings constructed on land held under a Chanote
- Condominium units as defined under the Condominium Act
Only the property owner can grant a Sap-Ing-Sith to another party (the “Sap-Ing-Sith holder”). The right must be made in writing and registered at the local Land Department office, which issues a Sap-Ing-Sith certificate confirming the registration.
How it differs from a standard leasehold
While it shares some similarities with leasehold, Sap-Ing-Sith is legally distinct and gives the holder considerably stronger rights:
- Transferable without consent — the holder can transfer the Sap-Ing-Sith to a third party without needing the property owner’s approval, unlike most leases, which typically restrict assignment.
- Usable as loan security — the holder can use the right as collateral for a mortgage.
- Inheritable — the right passes to the holder’s heirs under standard inheritance law, rather than terminating on death as many leases do.
- Alteration rights — the holder may make alterations or additions to the property without needing the owner’s consent.
Obligations of the Sap-Ing-Sith holder
In exchange for these stronger rights, the holder takes on responsibilities closer to those of an owner:
- Liable for the property in the same way an owner would be, for the duration of the right
- Must return the property in “as is” condition at the end of the term, unless otherwise agreed
Rights retained by the property owner
The underlying owner keeps meaningful control over the property despite granting a Sap-Ing-Sith:
- Retains the right to transfer ownership of the property, or use it as security for a mortgage or business collateral (existing mortgage holders must give written consent before a new Sap-Ing-Sith can be created)
- Cannot create any other competing right over the property without the Sap-Ing-Sith holder’s written consent
- Cannot terminate the Sap-Ing-Sith early if doing so would affect a third party who has acquired and registered rights in good faith and for value
One practical restriction applies to the land itself: a plot subject to a registered Sap-Ing-Sith cannot be subdivided or consolidated with another plot for the duration of the right.
Why it matters
The Act was designed to work around some of the structural limitations of ordinary leases under the Civil and Commercial Code — particularly the restrictions on transferability and use as collateral. For buyers and investors looking for a long-term, registered right to use a property with more flexibility than a standard 30-year lease, Sap-Ing-Sith is worth understanding as a distinct option, separate from leasehold, usufruct, and superficies.
As with any of these structures, the specific registration and drafting details matter, and anyone considering a Sap-Ing-Sith arrangement should have the documentation reviewed by a qualified Thai lawyer before proceeding.