Registration of a legal entity in the Republic of Bulgaria is necessary only if your purchase a property with land, a land plot or if you want to develop some business on the territory of our country.
The most widespread form of registration, preferred by the foreign investors is a limited liability company. Other types are a joint-stock company, a single person company, a joint venture, a subsidiary, a holding, a cooperative company, a representative office. The limited liability companies, the partnerships, the companies with limited public ownership, the holdings and cooperative companies are legal entities. The subsidiary companies and representative offices are independent legal entities. The subsidiaries can have business assets too- they are owners and keep a separate balance report. The representative offices can’t own any business assets. 
In order to register the most common type of company that will give you the legal right to own a property in Bulgaria, and namely an Ltd, it is enough to present your personal details, a name for the company and to engage a qualified Bulgarian solicitor who will handle its set-up. You need to pay a registration fee and to deposit in the company’s account a certain amount of share capital of 5000 BGN, which is required by the Bulgarian legislation and which you can use accordingly.
If you register in Bulgaria an Ltd with view of purchasing properties, there are 2 options:
One, you could register a company with 1 % Bulgarian participation or a sole proprietorship, which is 100% yours. The Bulgarian participation of 1% which our company will transfer back to you eventually, gives us the only power to register the company and to purchase the property on your behalf in case you don’t want to travel to Bulgaria to do that. After the deal is completed this 1% can be returned to the client without being taxed or we can keep it and this is often preferred by our clients. With this 1% we can manage your property while you are away. We will take care of your annual taxes and will clean the property regularly, taking the role of managers, if our clients assign this to us. In this case the process of registration takes form 1 to 2 weeks.
Two, in the case of sole, limited proprietorship the company is 100% yours and you are its only owner. This means that if you intend to travel to Bulgaria, you have to give us a POA so that we can register the company on your behalf and then another POA so that we can purchase the property( unless you come here personally to do that yourself). These POAs have to be notarized and certified by a special stamp called Apostille which can be obtained only with the Ministry of Foreign Affairs in your country. This usually takes a week for each separate activity. This way the procedure takes a little longer. The whole process of registration inthis case may take from 1 to 2 months. The choice is on you- our clients. After all, you will make the best choice for you. 
If you purchase an apartment without adjacent land, you can do that as a physical person meaning you don’t have to register a company.