To register a Bulgarian company is a straight-forward affair.
You first need to register a new company with the Commercial Register
There are many companies that will help you set up a company in Bulgaria in a speedy and inexpensive way. Generally these companies will also offer accountancy services.
The starting capital for a limited company can be as little as 1 Euro.
The company can be used as a business as well as for the purpose of buying property.
Any foreigner can own a Bulgarian company; there is no need to have a Bulgarian partner or manager and you don’t need to have residence permission.
All companies are required to submit accounts and annual returns.
The properties you buy in Bulgarian by means of a Bulgarian registered company will be owned by the company; in turn you own the company and its assets.
You can obtain additional information at:
https://www.gov.uk/how-to-buy-property-in-bulgaria
http://www.property-in-bulgaria.bg/