Buying And Renovating Houses In Philadelphia Many people want to become real estate investors in Philadelphia. It takes experience, knowledge, and good judgment to avoid the most common mistakes. The first major mistake home buyers and home investors make is paying too much for the house they wish to renovate. The second major mistake is underestimating the time and cost of renovations, which is often linked to poor contractors. Experienced home investors know reliable contractors that charge fair prices. Approximately 95% of all people who enter the house-flipping or home remodeling industry fail. Do you want a fair offer to sell your house? Call us Today.