Last updated on April 18, 2026
ThaiLawOnline is dedicated to providing professional legal services at reasonable prices. We act for foreign and Thai clients across Thailand — individuals, families, investors, and small-to-medium businesses — in civil, family, property, business, immigration, and estate-planning matters. Working with Thai lawyers since 2006, we combine more than 50 years of combined experience with modern technology to deliver faster, clearer, and more affordable results than most Bangkok firms of the same calibre.
Our Practice Areas
Civil Litigation
We represent clients before the Civil Courts of Thailand in contract disputes, torts, debt collection, consumer claims, employment disputes, and appeals. Our litigators draft pleadings, negotiate settlements, and appear in all court instances from the Courts of First Instance up to the Supreme Court (Dika).
Property & Real Estate Law
Buying or selling property in Thailand is not the same as in your home country. We handle title-deed due diligence at the Land Office, sale and purchase agreements, condominium transfers, long-term leases, usufructs, superficies, and the incorporation of Thai companies that can lawfully hold land. We also assist landlords and tenants with rental disputes and eviction matters.
Family Law
Family matters are personal, and we treat them that way. We advise on marriage registration in Thailand (for Thais and foreigners), prenuptial agreements, divorce (contested and uncontested), child custody, adoption, child support, and paternity. For international families we coordinate recognition of Thai decisions abroad and apostilles for foreign judgments.
Business & Corporate Law
We help entrepreneurs and investors set up Thai companies, BOI-promoted entities, representative offices, and branches. Services include drafting and reviewing shareholder agreements, joint-venture agreements, franchise and distribution contracts, employment contracts, and Foreign Business Act compliance. We also advise on mergers and acquisitions, share transfers, and corporate restructurings.
Estate Planning & Last Wills
A Thai last will protects your family and property in Thailand and streamlines the succession process. We draft bilingual (Thai/English or Thai/French) wills that are valid under Thai law, advise on cross-border estate issues, and represent heirs in probate proceedings before the Thai Family and Juvenile Court.
Immigration & Visas
Thai immigration law changes frequently. We help with retirement visas (O-A, O-X), marriage visas (O), work permits and business visas (B), LTR and Elite visas, permanent residency applications, and re-entry or visa extensions. We also defend clients facing overstay, deportation, and TM30/TM47 issues.
Criminal Defence
If you or a family member has been arrested, detained, or summoned by a Thai police station, the first hours matter. We provide bail applications, legal representation during police investigations, advice on Criminal Code offences, and full defence before the Criminal Court.
Notary Services & Document Certification
Our Notarial Services Attorneys can certify signatures, affidavits, powers of attorney, copies of documents, and oaths — recognised by embassies and foreign courts. We also coordinate Ministry of Foreign Affairs legalisation and apostille-style authentication for documents used abroad.
Translation & Legalisation
Certified legal translation between Thai, English, and French for court filings, contracts, certificates, and government applications. We manage the full legalisation chain from translator to Ministry of Foreign Affairs to embassy.
Why Choose ThaiLawOnline
- More than 50 years of combined experience in Thai and international law.
- More than 1,000 endorsements on LinkedIn for Mr. Sebastien H. Brousseau — rare for a foreign lawyer working in Thailand since 2006.
- Reasonable, transparent fees — most Bangkok law firms of our calibre charge two to three times as much.
- Multilingual team serving clients in English, French and Thai.
- Technology-forward practice using AI-assisted research, secure client portals and modern case management.
- Strong network across all regions of Thailand — Bangkok, Chiang Mai, Phuket, Pattaya, and Isaan.
How We Work With You
- Initial contact. Send us a short message describing your situation. We reply — personally — usually the same business day.
- Consultation. We schedule a call or meeting (in person in Bangkok or online) to understand your goals and answer your first questions.
- Transparent quote. Where possible we give you a flat fee; otherwise an hourly rate and a budget estimate before any work begins.
- Engagement and delivery. We handle filings, negotiations, drafting, and court appearances, and keep you updated at every stage.
Contact Us Now
Tell us briefly about your matter and we will come back to you with clear next steps and an honest view of your options.