Duplex apartments are often perceived as an eye-catching architectural format, yet in practice they do not always function well. According to architect Raúl Llorente, this type of property is where the gap between visual appeal and real functionality can be especially noticeable. At RentSale RealEstate, we view duplex apartments not as a status feature, but as a complex spatial system that requires careful evaluation.
The logic of vertical zoning becomes a key parameter. A staircase can enhance the perception of space, but it can also consume usable area and create inconvenient movement patterns. At RentSale RealEstate, we analyze whether the levels truly separate functions – public and private – or merely introduce artificial complexity without practical benefit.
Ceiling height plays a decisive role. In many duplex apartments, the second level is created through compromises, resulting in insufficient height and reduced comfort. Such layouts may look attractive on plans, but over time they begin to feel restrictive. This is why RentSale RealEstate evaluates not the presence of a second level itself, but whether it meets comfort standards.
Natural light is another critical factor. A duplex structure can enhance daylight through large windows and double-height spaces, but poor orientation may lead to dark lower levels. At RentSale RealEstate, we assess sunlight exposure on each level separately, understanding that balanced lighting directly affects how the space is perceived.
The two-level format also functions differently depending on lifestyle scenarios. For one client it may be an ideal solution for separating work and personal life, while for another it may become a source of ongoing discomfort. At RentSale RealEstate, we match the property’s architecture with the client’s lifestyle rather than abstract ideas of prestige.
Liquidity of duplex apartments requires particular attention. The market for such properties is narrower, which means that layout mistakes, staircase placement or ceiling height issues become critical during resale. At RentSale RealEstate, we evaluate in advance how understandable and appealing the format will be to future buyers.
Operational aspects should not be overlooked. Staircases, railings and complex structures demand more maintenance and higher safety standards. These factors are often underestimated at the purchase stage, but become evident over time. At RentSale RealEstate, we treat duplex apartments as properties with increased operational responsibility.
As a result, the duplex format truly works only when architecture follows the logic of everyday life rather than fashion. With proper proportions, lighting and functional separation, such properties can be strong solutions. These are the criteria by which RentSale RealEstate evaluates the potential of duplex apartments, helping clients make informed decisions rather than relying solely on visual effect.
Earlier we wrote about Market growth without value growth – how RentSale RealEstate identifies properties that fail to benefit even in a rising market