Attic extension and thermal renovation of the residential building: Case study

Abstract

Buildings are the only resource growing constantly. Although relevant data for Serbia is not available, it is presumed that even more than 50% of energy production is spent on buildings in our country. This conclusion is based on two facts: the present industrial production and the state of buildings. In order to establish measures for energy efficient refurbishment, one residential building was analyzed in Belgrade. The chosen building represents the construction period when application of thermal insulation was not obligatory according to building regulation. As more than 35% of buildings were built in that period, they represent great potential for energy savings through the process of refurbishment

A development process for extending buildings vertically – based on a case study of four extended buildings

“…As shown in case 3, renovation plus vertical extension in a popular location can be financially viable if the apartments are sold off. Jovanović-Popović et al (2006) came to the same conclusion in their study of attic extensions, were they claimed that a preliminary cost analysis showed that selling the apartments in the attic extension paid for the refurbishment of the existing building. Even so, it should be noted that no such cost analysis was presented or referred to in their paper.…”

“…Because some extension projects might not meet the housing developer’s required rates of return, alternative ways to finance extensions might well be needed. As mentioned earlier, Jovanović-Popović et al (2006) argued that an extension could be financed by selling the apartments in the extension. This argument is also supported by Lidgren and Widerberg (2010), who argued that increasing rent is not always sufficient; instead, selling some apartments could help finance the project.…”

“…Their study suggested that energy-efficient renovation alone would not be financially viable; however, when combined with a lateral, plus vertical, extension it would provide the best financial return. Jovanović-Popović et al (2006) claimed that a study of a preliminary cost analysis showed that it was possible to finance all renovation measures by undertaking a vertical extension and then selling the additional apartments. However, no analysis or data were presented in these two papers to support the claims.…”