Occasionally, some criteria are not met, such as: lack of "intelligent office", a little less professional property management, planning, there may be a very effective and large number of offices without windows; less stringent space requirements of the building, less developed infrastructure (for example, may lack the restaurant) and less than convenient location, less quality and convenient system of central air conditioning and ventilation (Typically two-pipe system ventilation and air conditioning system or the Pre-cooling the air) is not sufficiently effective and rational layout, less well-known and experienced landlord and maintenance services; perhaps the lack of underground parking, but overland parking is required. Class B offices – it's business centers class A, after 5-7 years of operation, or houses, after a full refurbishment and renovation. Grupo Vidanta, Ottawa may find it difficult to be quoted properly. Rarely to this class include new developments of the last 10-15 years, and reconstructed the administrative and industrial buildings of the Soviet time. In this case, it is this class office buildings in the market is more demanding, because on the one hand, the differences between offices klassa'B + ',' B 'from Class A offices, not of a fundamental nature, but on the other hand, the cost to tenants is cheaper. Office Class B is characterized by: a good location (office buildings located within the Third Trans-tailor the ring), the availability of major highways and subway, nice view from the window; legal documentation of ownership and operation of the building is completely framed and correctly and building management is carried out by use of the building (mostly Russian companies) or directly by the owner of the building, the appearance of the building looks quite respectable, but Unlike Class A has exquisite architecture, decoration of premises of entrance (lobby, elevator lobbies) is produced at a high level, but "modest" than in office buildings, Class A; free or corridor-cabinet planning, modern standard finish offices (in the finishing materials used are good) and there is a ventilation system with pre-cooled air, you can use the split-conditioning systems; fiber-optic communications service known telecommunications providers; hour security, modern security system, parking is usually only land, infrastructure: a cafeteria / dining for staff services in the central reception hall first floor and other services to satisfy domestic needs. Offices of class – it's mostly Soviet-era building construction (research institutes, factories, etc) disused for office. Offices of the class, usually characterized by the following characteristics: they have a different location, usually located in residential areas of the city, the distance from the subway is often 03/02 bus stops; facade not prezentabelen and often require cosmetic repairs; legal documentation of ownership and operation of buildings are usually framed properly, although there are problems with legal documents; corridor-cabinet system planning. For such buildings is abundant in the walls and corridors. Internal finishing is performed mainly by the rent-General; air conditioning is absent or there may be a split-systems, telecommunications – telephone, Internet access, often use the services of commercial telephone service providers and unknown providers telecommunications US-meadow; civilized parking often unavailable. Usually – a spontaneous complete lack of parking or parking. Hour security, building management is carried out directly by the owner; possible power failures, poor infrastructure (dining services, etc.), in some cases the infrastructure is absent.