The residential property market in Zambia is characterised by lack of readily available property market data resulting in market values that do not reflect all market information. An empirical case study approach based on best practice from both developed and developing countries to assess how this information can be incorporated into easily accessible data sharing mechanisms among the buyers, sellers, estate agents and valuation surveyors has been adopted. The evidence gathered from other countries show that a closer correlation exists between information sharing and property values because better-informed individuals have been securing better deals. However, in the absence of a properly framed data sharing mechanism anchored on strong legislative and institutional framework, real estate values can deviate from the actual either downwards or upwards. This finding substantiates the importance of deviations from the actual residential values due to lack of data sharing among the main players in the residential property market.