Green featured buildings have recently penetrated the real estate market. The pervasion of these buildings on the real estate market in Romania is a challenge for real estate assessors. Recently carried out surveys in the real estate field show that the sustainability is not a cost but an investment, due to the fact that the occupancy rate of the building can significantly increase, the management costs might tend to go lower due to innovative technologies, the capitalization and updating rates could be lower due to the fact that these green buildings can be associated with lower risk premiums; also, taxes on such properties can have a decreasing trend due to the fact that these buildings are much more friendly with the environment compared to the traditional ones, etc. The way sustainability transpires into the valuation of real estate, what are the decisions that the assessor will explain and justify in the valuation report are only a few questions that we aim to answer in the hereby survey by presenting a few relevant scenarios.