One of the biggest mistakes people make in real estate deals is to believe that a bad investment can always be made up by going in for another investment which seems to be a good one. The problem is that there is no guarantee that the second will fare much better than the first and if a person thinks that volume is going to average things out, then he or she is sure to find out otherwise.Proper analysis into the reasons a person is buying real estate, what the expectations are, thoroughly researching the properties one wishes to buy, evaluating the correct market value of the property – all these are a must for the serious investor. It is always to be remembered that buying real estate without putting any money down means that you are going in for an investment and any investment cannot be based on emotions, because that is a sure sign that the person will lose money in that venture. Getting the numbers right is what matters, leave the emotions and sentiments for when buying property to reside in! So do remember that investment property will need maintenance – probably more than a residential property.Also, that one or more tenants will miss making payments, sometimes for months at a time and you may have to endure the hassles and the cost of evicting them. Remember that there are taxes to be paid as well as the monthly mortgages, salaries for staff looking after your rental premises, etc.