66. real estate manager - a natural or legal person authorized by the co-owners of independent user units within one building/construction to represent them in procedures arising from management, based on a management contract, i.e. an inter-ownership contract 67. energy saving - the amount of saved energy and/or water determined by measurement and/or estimation of consumption before and after the application of one or more measures to improve energy efficiency, with normalization according to reference conditions 68. large city - local self-government units that have more than 35,000 inhabitants in accordance with the law governing the area of local and regional (regional) self-government