obrt: ≈ sole proprietorship; several types: slobodni, vezani, and povlašteni obrt (free, tied, and privileged proprietorship registered according to profession; tied and privileged proprietorships are those only master craftsmen can register,) paušalni obrt, obrt-dohodaš, obrt-dobitaš (flat-rate proprietorship, income tax p., profits tax p.; these are registered according to the type of taxation; first two are obligated to pay income tax and the last one is obligated to pay profits tax), sezonski obrt (seasonal proprietorship, that runs for a limited number of months during a year)
For businesses in industries like construction or real estate, where unforeseen circumstances and hazardous conditions may hold the owner responsible, consider starting an LLC. The protection gained means you will not be held personally liable, protecting you and your family from litigation or the debts of the business. An LLC may not be the best choice for business owners who plan on raising capital through outside investment. LLCs are not public structures and do not have shareholders, so taking a company public is not an option either. However, in the event that you'd like to take your business public you may switch to a public legal structure, like a C corporation, later on.