Abstract
The paper puts forward a mixed integer linear programming model to support the long-term planning and budgeting for renewal and capital improvements of residential buildings, i.e., to select the optimal sequence of repair and improvement actions over a predefined planning horizon. The input is provided by the evaluation of the building performance according to a set of criteria. Then a set of possible repairs, replacements and improvements needs to be proposed together with the estimates of their cost and benefits; the latter are expressed by increments of building performance ratings according to predefined criteria. The renewal and modernization measures are not mutually independent: at least some of them are complementary and should be carried out in a specific order. The optimization problem was to define the order of renewal/improvement measures resulting with the highest benefits available within the budget, or to achieve the required levels of building performance at the lowest cost. A unique feature of the model is the approach to the constraints on sequential relationships between the measures and to their selection. The model can be used to construct long-term renewal and capital improvement plans.
Highlights
Małgorzata Fedorczak-Cisak and Assuring the desired level of maintenance for multifamily residential buildings is the art of compromise that requires a great deal of commitment, technical expertise, and experience, as well as social competences [1]
It addresses the multi-criteria character of building maintenance decisions
The model to select and schedule the activities may serve as a practical tool to assist the manager in the long-term maintenance planning for residential buildings in a particular decision environment
Summary
Małgorzata Fedorczak-Cisak and Assuring the desired level of maintenance for multifamily residential buildings is the art of compromise that requires a great deal of commitment, technical expertise, and experience, as well as social competences [1]. To think of balancing all aspects of the building performance by means of renovation and improvement measures, one needs first to assess the building condition and performance. This assessment is naturally a multi-criteria one [4,5]. Older and worn buildings with higher renovation and modernization costs require sustainable maintenance scenarios, which will balance today’s and future needs [9]. Considering the complexity of the decision-making process in maintaining multifamily buildings, the authors propose a model to assist the residential real estate manager in preparing the long-term renewal and capital improvement plans.
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