To register a Thai limited company you must have an actual address, a P O Box is not acceptable.
To establish your Thai limited company the company address is not normally an issue, however, it will later become an issue when you are required to obtain a VAT certificate.
As a part of the process to obtain a VAT Certificate,the company is required to obtain the written permission of the owner of the premises where the company will be located (if the company is not the owner of the premises).
Also, if the registered address is a condominium unit, be aware that some condominium buildings include a specific provision, in their standard condominium sales agreements or the condominium juristic office's rules, prohibiting the condominium owner from using the condominium unit as a business address.
Vat registration is required to apply for a Thai work permit. TILA legal can offer our virtual office services for Thai company registration and vat registration and range from 2,000THB monthly (minimum 3 months).