What is the fine-grained topic of the following text: ACROSS is a global service provider encompassing all areas of the real estate sector, and has acquired the know-how that reaches far beyond the sector: we intervene whenever a market for owners needing technical assistance in the management of their real estate is created - updating records, assessments, maintenance, collection and updating of rental value, tenant management, purchasing, sales and exchanges of property, economic evaluation of projects for change of use, etc.. As far as investors are concerned, our aim is, naturally, to choose the best real estate investment in terms of cost, location, potential return on investment and market transaction ease. Only return the topic.
Real estate services and investment management provided by ACROSS.