Siam Legal International is one of Thailand’s most visible and long-established full-service law firms, headquartered in Bangkok with additional offices in Chiang Mai, Pattaya, Phuket, Koh Samui, and international locations in London and Las Vegas. The firm provides a broad range of legal services to both Thai nationals and foreigners, including immigration, real estate, corporate law, family law, and litigation.
Unlike many visa agents or business consultants, Siam Legal employs licensed Thai lawyers, foreign attorneys, and immigration specialists under one roof—making it one of the few law firms in the country that bridges both expat legal services and formal litigation support.
What They Do Well:
✔️ Licensed legal firm – not just a visa agent; can represent clients in court
✔️ Offices in multiple Thai cities plus overseas support in the UK and U.S.
✔️ Extensive services including visas, BOI/company setup, family law, and real estate
✔️ Immigration support includes tourist, marriage, retirement, and elite visa assistance
✔️ Clear communication in English with foreign-trained legal staff
✔️ Real estate expertise includes due diligence, land title reviews, and contract drafting
✔️ Transparent service menus and pricing for common immigration tasks (see pricing page)
Potential Drawbacks:
⚠️ Not the cheapest option – legal backing comes at a premium
⚠️ May not be ideal for low-cost or short-term tourist visa extensions
⚠️ Like all firms in Thailand, some bureaucracy still lies with the Thai government
⚠️ High client volume may mean slower response times during peak periods
Key Services Offered
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Thai Immigration & Visa Services:
Includes Marriage Visas, Business Visas, Retirement Visas, Permanent Residency, and Thai Citizenship. Also offers U.S., UK, and Australian visa help via foreign legal staff. -
Real Estate & Property Transactions:
Legal review of purchase contracts, title deed verification, leasehold drafting, BOI-linked project advice, and escrow support. -
Litigation:
Civil, commercial, and criminal court representation in Thailand, including defamation, fraud, property disputes, and breach of contract. -
Family Law:
Divorce (Thai and foreign spouse), prenuptial agreements, child custody, and adoption. -
Corporate & Investment Law:
Business registration, Foreign Business Licenses, Treaty of Amity setup (for U.S. nationals), and BOI privileges for investors. -
Notary Services, Wills, and Inheritance:
Official document notarization, Thai Last Will drafting, and estate services.
Why Use a Law Firm Instead of a Visa Agent in Thailand?
For most short-term travelers, a visa agent is enough. But if you’re planning to:
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Invest in Thai property
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Set up a Thai company
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Bring a spouse or child into the country
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Gain permanent residency or citizenship
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Navigate legal disputes, contracts, or inheritance
…a licensed legal firm like Siam Legal provides not just advisory services but formal legal representation, compliance support, and multi-layered documentation that visa agents are not authorized to offer.
Best For:
Foreigners planning long-term residence, legal investment, family settlement, or formal litigation in Thailand. Ideal for those seeking legal certainty, not just immigration facilitation. Particularly suitable for U.S. citizens leveraging the Treaty of Amity, property investors, retirees, and foreign couples.
✨ AI Review Highlights
Professional and Competent Legal Services
Siam Legal, located on the 18th floor, receives high praise for its professional and courteous service. Clients appreciate the firm's impeccable English and reasonable fees, making it highly recommended for legal matters.
Helpful and Knowledgeable Office Staff
The building hosts offices with staff capable of assisting with various needs. Clients have successfully navigated complex legal processes, such as will preparation, highlighting the benefit of using local expertise.
Friendly and Polite Staff
Visitors commend the staff for being polite and helpful, enhancing the overall experience within the building.
Elevator and Building Maintenance Issues
The building is described as old and in need of renovation, with specific issues such as slow and poorly functioning elevators and unclean facilities on the 11th floor, including broken toilets and stained carpets.
Allegation of Scamming by a Lawyer
A customer reported a negative experience with a lawyer in the building, alleging a scam involving a fee of 2500 THB and poor communication.
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FAQ
Does Thailand have a long-term visa for digital nomads?
Yes. Thailand offers the Destination Thailand Visa (DTV) — a 5-year multiple-entry visa for digital nomads and remote workers.
What are the main requirements for the DTV?
Proof of remote work or ‘soft power activities’, like cooking classes, Muay Thai classes or even dental work , ~THB 500,000 in funds, valid passport.
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