At website there should be clearly defined about there Service Area. I mean in which country or state they provide there services. For example if there website domain name ends with .co.uk than it is sure that they are related from United Kingdom.
Contact Information should be clearly defined.
There should be version of local language. This secondary version reflects interpretations of the primary version. It is very useful for local people.
Website should have real life example of quick sale service like case study.
Website should have great focus on current trends and news.
Website should have good content related to problems what people facing in house sale and their solution.
Website should be oriented to featured articles, not only promotional content.
Website should have links of recommended resources and books.
Website should invite reader to ask question and publish there answer.