A Comparison of Rental Property Investment between London and Paris. Background Real estate investment is an appreciated form of long term investments and always preferred to the long-term stock investment. Real estate refers to the property, which is land plus the building and any other development on the land including fencing, building and any other on site improvement. A properly developed real property will mean a consistent flow of income from the rental payments received. Thus the investment realizes a consistent, predictable cash flow. In the long term, the property is bound to increase in value as a result of appreciation, thus its capital value continues to increase. Further more there are other benefits that accrue to buying property.