A real estate investor invests capital in property. You buy and sell properties, manipulate their valuation, collect rents, and lobby politicians and governmental land-use agencies to realize a profit. You may work alone as an individual investor, with a partner, or as part of a network of investors. If you have enough knowledge and experience, companies or other individuals may hire you to manage their property portfolio or advise them on property investment strategies. Your primary concern is the inflation of land value.