Update your Rental Agreement: What “Residential Property Leasing as a Contract-Controlled Business” B.E. 2568 (2025) has changed ?

Thailand has overhauled the rules governing residential rental contracts. The reform responds to recurring tenant complaints, particularly regarding forfeited security deposits, inflated utility charges, and unclear contractual terms.

On 6 June 2025, the Contract Committee of the Office of the Consumer Protection Board (OCPB) issued a new notification reclassifying residential leasing as a contract-controlled business for 2025. The updated framework became fully effective on 4 September 2025 and replaces the previous 2019 notification.

Broader Scope: More Landlords Covered

One of the most significant changes is the expansion of the regulation’s scope.

Under the former 2019 rules, only businesses leasing five or more residential units were subject to mandatory consumer protections. The 2025 notification lowers that threshold to three or more units. As a result, a greater number of property owners and operators must now comply.

The regulation applies to leasing businesses. Hotels, serviced apartments, and dormitories remain outside its scope because they are governed by separate legislation.

Electronic Leases Now Explicitly Recognized

The new notification confirms that electronically executed lease agreements are valid, provided they comply with the updated requirements and Thailand’s Electronic Transactions Act.

This ensures that contracts signed through online platforms or via electronic signatures receive the same legal treatment as traditional paper agreements.

Existing leases that complied with the 2019 rules remain valid until expiry. However, any lease signed on or after 4 September 2025 must meet the new standards.

Mandatory Content in Residential Lease Agreements

The notification prescribes specific clauses and formatting rules that must appear in all covered lease agreements.

Language and Presentation

Lease agreements must be drafted in Thai, using a clearly legible font with minimum size requirements (at least 2 mm in height and no more than 11 characters per inch).

An English version may be prepared for convenience, but in case of dispute, the Thai version prevails before Thai courts and authorities.

Each agreement must clearly state:

• The identity and contact details of the parties (or their representatives)
• A detailed description of the leased property
• Rent, service charges, deposits, and utility rates
• Lease duration and payment terms

Documentation and Transparency

To promote clarity between landlord and tenant:

• Written invoices for rent, utilities, and service charges must be issued at least three days before payment is due.
• Tenants have the right to inspect supporting documents relating to utility and service charges.
• A signed move-in inspection report must be attached to the lease. This document records the property’s condition at handover and may include photographs. Both parties must sign it.

Security Deposits: Clear Timelines for Return

The 2025 notification strengthens protections regarding security deposits.

At the end of the lease:

• The deposit must be returned immediately if no inspection is required.
• If inspection is necessary and no damage is found, it must be returned within seven days.
• If repair costs must be deducted, the remaining balance must be returned within 14 days.

Landlords remain responsible for general repairs, except in cases of minor wear and tear or damage caused by force majeure.

Early Termination Rights

Tenants are granted a statutory right to terminate a fixed-term lease early once they have occupied the property for at least 50% of the agreed term. To do so, they must provide 30 days’ written notice and settle outstanding amounts.

Landlords must also provide at least 30 days’ notice before terminating a lease. In urgent situations involving misconduct affecting other occupants, seven days’ notice may be sufficient. Immediate termination is allowed only where public order or morality is implicated.

Importantly, if a lease omits any mandatory protections required by the notification, those protections will be implied by law. A landlord cannot avoid compliance by using a non-standard template.

Prohibited Clauses and Financial Limits

The notification also specifies which contractual terms are invalid.

Caps on Advance Payments

Landlords may collect:

• Up to three months’ rent for leases with monthly payments (whether short or long term).
• Up to one year’s rent where payment is structured annually.

Amounts exceeding these limits are not permitted.

Restrictions on Landlord Conduct

The following practices are prohibited:

• Increasing rent or service charges during the lease term.
• Retaining deposits without tenant fault.
• Entering the property without prior notice (except in emergencies).
• Charging utility rates above official government tariffs.

Unenforceable Terms

Any clause attempting to:

• Make tenants liable for normal wear and tear or events beyond their control,
• Permit lockouts or seizure of tenant property,
• Impose renewal fees,
• Allow termination without material breach by the tenant,

will be void and unenforceable, even if signed.

Penalties for Breach

Non-compliance carries serious consequences. Businesses that violate the notification may face criminal liability under consumer protection legislation, including imprisonment of up to one year, fines of up to THB 200,000, or both.

Practical Implications for Landlords and Property Managers

Since the rules have been in force since 4 September 2025, landlords and property management companies should already have aligned their practices with the new framework.

This includes:

• Updating standard lease templates,
• Adjusting deposit handling procedures,
• Ensuring proper invoicing practices,
• Bringing online leasing systems into compliance.

Failure to implement these changes exposes landlords to regulatory risk and potential criminal sanctions.

Thailand’s 2025 residential leasing reform marks a significant shift toward stronger tenant protection and greater contractual transparency. Landlords operating three or more residential units must ensure that their agreements and procedures strictly comply with the updated requirements.

The information contained in this article is for general informational purposes only and should not be construed as legal advice. You should seek professional advice for your specific situation.