Legal Services in Bangkok for Expats and Businesses

Last updated on September 5, 2026

ThaiLawOnline is a licensed Thai law firm in Bangkok, working in English and French since 2006. We handle property, family, wills and inheritance, visa and company matters for expats at fixed fees, in person at Udom Suk (Bang Na, Sukhumvit 101/2) or by video across Thailand.

Last reviewed: 3 September 2026. This is a services page, so what was checked here is what a client could act on. Every published fee was reconciled against the live fees.json the firm bills from: consultation 2,000 per hour, Last Will 3,900, Last Will with a Living Will 5,000, prenuptial agreement 8,900, divorce by mutual consent 9,900, notarial services from 950 per document and the police clearance certificate 4,400 all match exactly. The Living Will was the one gap and is corrected: it is priced at two tiers, 590 self-serve and 1,900 drafted, and the page published only the higher one. The address, both telephone numbers and the LINE handle were checked against the firm’s published contact record; the LINE row had a label and no handle and now carries it. Every internal and external link on the page was fetched.

What this review does not cover, said rather than implied. The biographical and qualification statements about the team, the descriptions of what the firm does and does not do better than other firms, and the coverage arrangements through partner lawyers are the firm’s own account of itself and were not audited. No competitor’s fee is quoted anywhere on this page, which is what the page itself promises. The only legal proposition on the page that was checked against a primary is the one about leases, and it was changed: Dika 4655/2566, read in Thai, holds that a 30-year lease with same-day promises of two further 30-year renewals is void as to those renewals for evading Section 540 of the Civil and Commercial Code.

Our legal services in Bangkok, by practice area

Every service below has its own page with the process, the documents and the fee. Start there, or book an online consultation (2,000 THB per hour) if you are not sure which one you need.

Practice area	What we do	Fee
Family lawyer in Bangkok	Marriage, prenuptial agreements, divorce, child custody, legitimation	Divorce 9,900 THB, prenup 8,900 THB
Property lawyer in Bangkok	Condo and land due diligence, leases, usufructs, title deed checks	Quoted per transaction
Wills lawyer in Thailand	Last Will in Thai and English, Living Will	Last Will 3,900 THB, Living Will 590 THB self-serve or 1,900 THB drafted for you, both together 5,000 THB
Inheritance lawyer in Thailand	Estate administration, court appointment of an administrator, death of a foreigner in Thailand	Quoted per estate
Visa and immigration lawyer	Marriage visa, retirement extension, DTV, 90-day report, work permit in Bangkok	Quoted per application
Company registration lawyer	Thai limited company, BOI, contracts and compliance	Quoted per company
Notary public in Bangkok	Notarial services on site and online, certified copies, affidavits	From 950 THB
Police clearance certificate	Thai criminal record check filed for you in Bangkok	4,400 THB
Litigation lawyer in Bangkok	Civil and criminal representation by Thai barristers, mediation	Quoted per case

Our office is in Bangkok and we act for clients throughout Thailand, working with partner lawyers in Chiang Mai, Phuket, Nakhon Ratchasima (Korat) and Ubon Ratchathani, and with cross-border support for Singapore matters. Working under Thai law since 2006, our management team has worked with clients from over 30 countries and connects Western expectations with Thai legal reality.

Legal Services in Thailand: International Expertise, Local Pricing

Legal Services in Bangkok and all over Thailand

Looking for professional yet affordable lawyers in Bangkok? ThaiLawOnline is a law firm managed by Western experts and licensed Thai attorneys. We provide guidance in Family Law, Property Law, Wills & Inheritance, and Immigration, with every fee agreed before the work starts.

Why Choose ThaiLawOnline? The “Founder’s Guarantee”

Unlike general legal directories or firms run by local agents, ThaiLawOnline is run by Mr. Sebastien H. Brousseau. He has a law degree (LL.B.) and a science degree (B.Sc.). He is a skilled Canadian lawyer who was admitted to the Barreau du Québec. Mr. Brousseau has practised law since 2000 and has worked under Thai law since 2006.

Sebastien has lived in Thailand since 2004. He has managed well-known law firms since 2006. This includes a former branch of Siam Legal and the founding of ThaiLawOnline. He leads a team of licensed Thai lawyers and notaries. They combine international care standards with local Thai laws.

“My goal is simple: provide the same quality as top-tier Bangkok firms at a fraction of the price by using technology and AI to reduce overhead.”, Sebastien H. Brousseau, Managing Partner

Our Team: Barristers & Specialized Attorneys

We don’t just list names; we list qualifications. Our team includes high-ranking legal professionals capable of handling complex litigation and transactions across the Kingdom:

• Sebastien H. Brousseau (Manager): Canadian Lawyer (Bar of Quebec). Expert in Family & Real Estate Law, with a deep understanding of Thai culture and the Expat experience.
• Wichuda Atthamethakon (Partner): Licensed Thai Lawyer & Notary Public. Holds a Master of Laws (LL.M.). She manages our Isaan and Property operations.
• Garn T. (Partner): Thai Barrister-at-Law & LL.M. A specialist in criminal defense and high-stakes civil litigation.
• Chettaphat S. “JJ” (Senior Associate): Specialist in Bangkok Civil Court proceedings and dispute resolution.

Nationwide Coverage: Not Just Bangkok

While many firms act only in the capital, we represent clients throughout Thailand. We have one office, in Bangkok. Everywhere else we act through partner lawyers and by travelling to you, which is why we do not charge you for a branch you never visit:

• Bangkok (our office): Central litigation, corporate registration, and immigration.
• Isaan (Nakhon Ratchasima & Ubon Ratchathani): Family law and rural land transactions, through partner lawyers and on-site visits.
• Chiang Mai & Phuket: Real estate and expat services, through partner lawyers and on-site visits.
• Singapore: Cross-border estate planning and notarisation, handled from Bangkok with local counsel where required.

Transparent Fee Comparison: Why We Are The Smart Choice

Legal work in Bangkok is usually billed by the hour, and the rate is usually not published, so you cannot compare before you commit. We work the other way round: the fee is fixed, it is on this page and on the pricing page, and it is agreed before the work starts. Modern legal technology keeps our overhead down and that is what the fixed price reflects.

Service	How it is usually charged	Our fee
Last Will & Testament	Hourly, or quoted only after an enquiry	3,900 THB fixed
Prenuptial Agreement	Hourly, or quoted only after an enquiry	8,900 THB fixed
Consultation (1 hour)	Hourly, rates rarely published	2,000 THB
Living Will	Hourly, or quoted only after an enquiry	1,900 THB fixed
Last Will + Living Will together	Rarely offered as a package	5,000 THB fixed

Our fees are published in full on the pricing page and are fixed, not estimates. We do not quote other firms’ prices here, because a fee you cannot verify is worth nothing to you when you are comparing.

---

Our Core Legal Services

1. Family Law & Marriage

Family matters require sensitivity and legal precision. We handle:

• Prenuptial Agreements: Drafted in Thai and English to ensure global enforceability.
• Uncontested divorce at the Amphur or contested court litigation.
• Child Custody: Legalization of father’s rights and custody disputes.
• Complete assistance for foreigners marrying Thai nationals.

2. Property & Real Estate

Protect your investment with our rigorous due diligence.

• Registered leases for their full statutory term of 30 years, drafted the way the courts now require. ⚠️ We no longer sell a lease as 30 years plus renewals: in Dika 4655/2566 the Supreme Court treated a 30-year lease coupled on the same day with promises to renew twice more on identical terms as an attempt to get round the 30-year ceiling in Section 540 of the Civil and Commercial Code, and held the renewal promises void outright. Where you need security beyond 30 years we will tell you which instrument actually gives it.
• Usufructs: Lifetime usage rights registered on the title deed.
• Owning the structure separate from the land.
• Title deed checks and land office verification before you pay.

3. Estate Planning (Wills)

• Last Will & Testament: Essential for any expat with assets in Thailand.
• Living Wills: Directives for end-of-life medical care.

4. Corporate & Business

• Company Registration: Setting up Thai Limited Companies.
• Tax incentives for eligible business activities.
• Work Permits: Processing for employees and business owners.

5. Litigation & Notary

• Criminal & Civil Litigation: Representation in all Thai courts by Barristers.
• Notarial Services: Verification of signatures and documents for international use.
• Police Clearance Certificate: Criminal record checks for visa, residency and employment applications, filed for you in Bangkok.

The Future of Law: Tech & AI Integration

We are not just a law firm; we are a tech-forward legal provider. Led by Sebastien H. Brousseau, ThaiLawOnline uses AI to create standard contracts. This process is faster and more accurate than traditional teams. We are the only firm in Thailand that provides high-quality legal documents. This is possible because of our efficiency. Our prices are competitive.

Start Your Legal Journey

Don’t just take our word for it. Our manager has hundreds of endorsements on LinkedIn, proving a reputation built on trust since 2004.

Ready to resolve your legal matters?

• Book an Online Consultation (Video call available).
• Call us: +66 (0) 87 225 1340 (Eng/Fr) or +66 (0) 87 414 9288 (Thai).
• LINE: @852pntmy (English, French and Thai).

Different fields with specialist to help you out.

Family Law Services in Thailand

Family matters can be complex in a cross-cultural setting. Our family law team guides you through life’s important events with sensitivity and expertise. We handle all aspects of Thai family law, including:

• Prenuptial Agreements, starting from 8,900 THB. We draft robust prenups in Thai and English and register them correctly at marriage to ensure legal enforceability.
• Marriage Registration, We handle paperwork, translations, and legal formalities to validate marriages under Thai law.
• Divorce & Child Custody, We assist in uncontested divorces, contested divorce representation, and custody/support negotiations.

Property Law & Real Estate in Thailand

Thailand’s property laws can be tricky, especially for foreigners. ThaiLawOnline offers expert guidance in property and real estate law:

• Lease Agreements & Usufructs, We prepare contracts to grant enforceable usage rights for up to 30 years.
• Condo & Land Purchases, We do due diligence, title deed checks, and contract review.

Wills and Inheritance, Estate Planning

• Last Will and Testament, Starting at 3,900 THB. Drafted in Thai and English to legally distribute your Thai assets.
• Living Wills & Estate Planning, Ensure medical wishes and inheritance plans are respected.

Corporate & Business Law

• Company Registration, Thai limited company, BOI, and partnership setups.
• BOI Applications, For foreign-owned startups or investors.
• Contract Drafting & Compliance, Business contracts, NDAs, employment agreements, and regulatory filings.

Immigration & Visa Services

• Visa Assistance, Marriage, retirement, business, education, and digital nomad like DTV, visa help.
• Work Permits, Individual or company-sponsored work permits.

Criminal and Civil Litigation in Thailand

• Litigation Services, Representation in civil, criminal, and business disputes.
• Mediation & Negotiation, Alternatives to court when applicable.

Notarial Services (Onsite & Online)

• Notary Services, From 950 THB. Powers of attorney, certified true copies, affidavits, and identity confirmation.
• Online Notarization, Remote legal certification via video call.

Contracts & Document Drafting

• Loan Agreements, Vehicle Sales, Mortgage Contracts.
• Power of Attorney and custom agreements reviewed by senior lawyers.

Start Your Legal Journey with ThaiLawOnline

Ready to resolve your legal matters with confidence? ThaiLawOnline is here to help. Contact us for online consultations (2,000 THB per hour). We offer in-person or secure video appointments and serve clients in Bangkok, across Thailand, and internationally. Let ThaiLawOnline be your trusted partner for legal services in Bangkok, affordable, professional, and effective.

Frequently asked questions about our legal services in Bangkok

• Lawyer’s council of Thailand