It's Friday the 13th, and did you know that houses numbered 13 could potentially put people off buying and even reduce the value of the property. This article lists 10 turn offs to prospective buyers that could potentially cause the house value to drop. As well as houses numbered 13, other turn offs include evidence of pets (despite 45% of us in the UK owning a pet), illegal improvements and even swimming pools! This article suggests that number 13 could result in a £9,000 reduction of the average house price! Do the valuers and estate agents reading agree? Read more here.