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The objectives of this paper are to identify and rate the importance levels of the factors that may affect business continuity during partial renovation of office buildings while being occupied. The paper also proposes a checklist of measures to carry out in order to reduce the impact of renovation works on business continuity.

The authors have analyzed the published literature for the purpose of reviewing the reasons for renovating the workplace, and aspects of planning and scheduling renovation works in occupied facilities. A sum of 24 elements that may affect business continuity during partial renovations of open‐plan office buildings while being occupied were identified. These factors were classified under four categories, including functional, technical, behavioral, and management practice factors. The authors then developed a questionnaire to rate users' perception of importance to each of the identified 24 elements and conducted a survey to evaluate the importance of these elements on business continuity in two office buildings.

The importance levels of each of the elements were analyzed and reported. The authors also developed a checklist of measures to carry out to reduce the impact of renovation works on business continuity in office buildings.

Facilities during their life cycle may be renovated to restore or upgrade the functionality of their building elements, or to suit a new function. Renovation works could negatively affect businesses continuity and decrease levels of productivity due to their impact of the technical systems in the building, and the time spent on relocating employees to temporary facilities until the renovations are completed. However, in some cases renovation works could be performed without the need for relocating employees, or the business to be stopped. The paper provides a practical value to building owners and facility managers intending to undertake renovation works during the life cycle of their buildings.

Proper performance assessment of residential building renovation is crucial to sustainable urban development. However, a comprehensive review of the literature in this research domain is lacking. This study aims to uncover the study trend, research hotspots, prominent contributors, research gaps and directions in this field.

With a hybrid review approach adopted, relevant literature was examined in three stages. In Stage 1, literature retrieved from Scopus was screened for their relevance to the study topic. In Stage 2, bibliographic data of the shortlisted literature underwent scientometric analyses by the VOSviewer software. Finally, an in-depth qualitative review was made on the key literature.

The research hotspots in performance assessment of residential building renovation were found: energy efficiency, sustainability, thermal comfort and life cycle assessment. After the qualitative review, the following research gaps and future directions were unveiled: (1) assessments of retrofits incorporating renewable energy and energy storage systems; (2) evaluation of policy options and financial incentives to overcome financial constraints; (3) establishment of reliable embodied energy and carbon datasets; (4) indoor environment assessment concerning requirements of COVID-19 prevention and involvement of water quality, acoustic insulation and daylighting indicators; and (5) holistic decision-making model concerning residents' intentions and safety, health, well-being and social indicators.

Pioneered in providing the first comprehensive picture of the assessment studies on residential building renovations, this study contributes to offering directions for future studies and insights conducive to making rational decisions for residential building renovations.

Buildings are among the biggest contributors to environmental impacts. To achieve energy-saving and decarbonisation objectives while also improving living conditions, it is imperative to undertake large-scale renovations of existing buildings, which constitute the greater part of building stock and have relatively low energy efficiency. However, building renovation projects poses significant challenges owing to the absence of optimised tools and methods for planning and executing renovation works, coupled with the need for a high degree of interaction with occupants.

This paper describes the development of an automated process, based on building information modelling (BIM) and the principal component analysis method, for overcoming building renovation challenges. The process involves the assessment and simulation of renovation scenarios in terms of duration, cost, effort needed and disruptive potential. The proposed process was tested in three case studies; multi-residence apartment buildings comprising different construction components and systems, located in Greece, France and Denmark, on which six different renovation strategies were evaluated using sensitivity analysis.

The developed tool was successfully able to model and simulate the six renovation scenarios across the three demonstration sites. The ability to simulate various renovation scenarios for a given project can help to strategise renovation interventions based on selected key performance indicators as well as their correlation at two different levels: the building level and the renovated surface area level.

The objectives of this paper are twofold: firstly, to present an automated process, using BIM, for evaluating and comparing renovation scenarios in terms of duration, cost, workers needed and disruptive potential; next, to show the subsequent testing of the process and the analysis of its applicability and behaviour when applied on three live demonstration sites located in three different European countries (France, Greece and Denmark), involving six renovation scenarios.

This study aims to develop a building renovation duration prediction model incorporating both scope and non-scope factors.

The study used a questionnaire to obtain basic information relating to identified project scope factors as well as information relating to the impact of the non-scope factors on the duration of building renovation projects. The study retrieved 121 completed questionnaires from construction firms on tertiary education trust fund (TETFund) building renovation projects. Artificial neural network was then used to develop the model using 90% of the data, while mean absolute percentage error was used to validate the model using the remaining 10% of the data.

Two artificial neural network models were developed – a multilayer perceptron (MLP) and a radial basis function (RBF) model. The accuracy of the models was 86% and 80%, respectively. The developed models’ predictions were not statistically different from those of actual duration estimates with less than 20% error margin. Also, the study found that MLP models are more accurate than RBF models.

The developed models are only applicable to projects that suit the characteristics and nature of the data used to develop the models. Hence, models can only predict the duration of building renovation projects.

The developed models are expected to serve as a tool for realistic estimation of the duration of building renovation projects and thus, help construction project managers to effectively plan and manage it.

The developed models are expected to serve as a tool for realistic estimation of the duration of building renovation projects and thus, help construction project managers to effectively plan and manage it; it also helps clients to effectively benchmark projects duration and contractors to accurately estimate duration at tendering stage.

The study presents models that combine both scope and non-scope factors in predicting the duration of building renovation projects so as to ensure more realistic predictions.

Renovation philosophy and residential construction mode are key problems encountered in the renovation of urban villages in China. Existing research fruits on renovation philosophy, and policies consider fairness and efficiency and cover-sharing research consensus. However, research on residential construction mode in renovation still faces challenges, such as weak relevant policy pertinence, insufficient objective references, and poor universality. In this study, the changes of the architectural spaces of a typical urban village community in Xi'an City from the beginning to the end of the renovation were discussed. The space requirements of different user groups were analyzed and summarized, and then adapted to the different types of building spaces. In addition, the residential construction model applicable to the inclusive renovation philosophy was established. Research results corroborated that the renovation of urban village should refer to its functional orientations in the community. The community-centered renovation residential district should also meet the requirements of different user groups in the community, including residential, living, and entertainment functions. Community-subcentered residential district should meet the space demands of residential and living functions. Community-subordinated residential district meets space demands of internal residents for residential and living. Moreover, residential district space is relieved by combining practical and certain spatial factors. In this research, the building space compositions of different user groups were reviewed and refined in the “bottom-up” pattern. Research conclusions provide design references for the practical renovation of urban villages.

The purpose of this paper is to gain knowledge on the renovation status for Norwegian dwellings that can be used to design attractive energy efficiency measures. Norwegian dwellings are exposed to a windy, cold and moist climate and the technical condition of existing dwellings depend on the owners priorities regarding maintenance and renovation. The paper focuses on the renovation status and technical condition of privately owned detached houses built in Norway in the 1980s constituting 10 per cent of the total Norwegian dwelling stock. These houses are high-energy spenders and are at a stage in their lifetime where major renovation such as new windows and ventilation system is expected.

The status for redecoration, maintenance and renovation as well as the technical condition of 91 dwellings are mapped and analysed.

An analysis of the empirical data identified four categories of houses when considering home upgrades and technical condition: the as built, the aesthetic, the well kept and the do it yourselves houses. There is no correlation between the observed technical condition and the home upgrade level for the houses in the study. Significant resources may have been used for redecoration and unskilled renovation while not dealing with the need for maintenance and repair.

The knowledge on homeowner categories can be used to tailor policy instruments to accelerate energy efficiency rates for privately owned dwellings.

There are no previous studies on Norwegian private homeowners and the technical condition of their homes.

The purpose of this paper is to present an empirically‐based insight into the practice and perception of architects, interior designers and building contractors who make up the external parties involved in the hotel renovation process.

In the paper a survey is used to elicit and represent existing practices as well as external parties' perceptions regarding renovation as a product development tool in the hotel industry.

The paper reports findings of a survey conducted with external parties' firms in Egypt on the challenges of renovation in the hotel industry.

The paper shows that, from the interpretation of the data reflecting responses of the external parties' companies in Egypt, the analysis shows that “lack of money” and “limits by owners” are perceived by external companies to be the main obstacles to renovation in all hotel categories. Surprisingly, the training of the external parties did not include marketing and the majority were found to have a limited understanding of marketing concepts, such as new product development and innovation. All the external parties referred most frequently to their design being for “the client”, meaning the hotelier, however, rather than the hotel customer.

In the paper, implications for both external parties and hoteliers are offered.

This paper aims to explore the extent of the use of hotel renovation as a product development tool in the hospitality industry. It aims to gain an understanding of the nature of renovation within the context of large hotels.

The approach is a multiple case study of five star hotels in Egypt. A sample of nine hotels was selected.

The results reveal that Egyptian five star hotels use renovation to achieve different aims and goals. Surprisingly, the cases indicate that Egyptian five star hotels still use renovation as a reactive rather than proactive property management tool. The study suggests that renovation was found to be most successful in organisations that have clearly stated renovation strategies, a good relationship between the managing and owning companies, sufficient funds, and greater customer involvement.

While the findings may be applicable to hotels other than five star and located in other parts of the world, further research would be required to conform this.

The paper will be useful to hotel groups, or those advising such clients who are considering renovation of luxury hotel accommodation.

Results are discussed in the context of theoretical and empirical work on renovation, and product development.

All built facility begins to show signs of deterioration immediately after the facility is completed and put to use, thus necessitating routine maintenance. Increase in defects due to age, usage, and other factors, requires extensive maintenance activities known as renovation. The data used for a typical renovation plan can be collected using the condition assessment (CA) tool which depends on physical inspection of the defects or through a facility condition index which hinges on harnessing and analyzing the information in the operational history of the facility. The purpose of this paper is to examine the quality of a typical renovation plan using both tools.

The single case study of qualitative research was adopted. The data were collected through the principle of semi-structured questionnaire complemented with interviews and document analysis. The documents include periodic operational reports and a CA report used for planned renovation exercise of the Facilities Management (FM) Unit in a higher education institution in South Africa.

The findings revealed that although the FM Unit produces periodic reports, but there was no evidence of detailed analysis of the reports. Therefore, the programmed renovation exercises are based purely on the information from a CA.

This research is a single site case study of qualitative research; the data collected are limited and not sufficient for generalization of the results. Furthermore, the lack of record of the analysis of the operational history in the periodic reports negatively affected the computation of facilities condition index (FCI). Thus it was not possible to demonstrate the strength of FCI over CA from empirical information.

The quality of a typical renovation plan is influenced by the tool used for data collection. Although the CA tool is commonly used, experience shows that the renovation exercise developed from such records is prone to many execution setbacks, such as frequent scope changes and the associated cost and time overruns. These setbacks can be minimized if the FCI is used as the tool for data collection.

This study aims to focus on the sustainability of prefabricated medical emergency buildings (PMEBs) renovation after the epidemic, to address the problem that large numbers of PMEBs may be abandoned for losing their original architectural functions. This study develops an evaluation system to identify and measure sustainable factors for PMEBs’ renovation schemes. Qualitative and quantitative analysis of PMEBs’ renovation scheme was conducted based on cloud model evaluation method and selected the renovation scheme in line with sustainable development. The study promotes evaluation methods and decision-making basis for the renovation design of global PMEBs and realizes the use-value of building functions again.

By referring to the existing literature, design standards and expert visiting a set of evaluation index systems which combines the renovation of the PMEBs and the sustainability concept has been established, which calculates the balanced optimal comprehensive weight of each indicator utilizing combination weighting method, and quantifies the qualitative language of different PMEBs’ renovation schemes by experts through characteristics of the cloud model. This paper takes Huoshenshan hospital a representative PMEB during the epidemic period as an example, to verify the feasibility of the cloud model evaluation method.

The research results of this paper are that in the PMEBs’ renovation scheme structural reformative (T11) and corresponding nature with the original building (T13) have the most important influence; the continuity of architectural cultural value (T22) and regional development coherence (T23) are the key factors affecting the social dimension; the profitability of renovated buildings (T34) is the key factor affecting the economic dimension; the environmental impact (T41), resource utilization (T42) and ecological technology (T43) are the key factors in the environmental dimension.

This study contributes to the existing body of knowledge by supplementing a set of scientific evaluation methods to make up for the sustainability measurement of PMEBs’ renovation scheme. The main objective was to make renovated PMEBs meet the needs of urban sustainable development, retain the original cultural value of the buildings, meanwhile enhance their social and economic value and realize the renovation with the least impact on the environment.