Differentiated Urban Citizenship and Housing Rights: Analysing the Social Impacts of Urban Redevelopment in Globalizing Istanbul

There is growing interest in the transformation of urban citizenship and the changing right to the city of the urban poor under neoliberal restructuring of cities in the Global South. This article examines a ‘squatter settlement transformation project’ in Istanbul that is intended to contribute towards the transformation of Istanbul into a global city. The transformation projects are based on private homeownership, incorporate the urban poor into a new ‘property regime’ and allocate them differentiated access to housing in the city. Using qualitative data, this article traces the unequal outcomes of the project for its displaced residents and demonstrates the emergence of ‘differentiated urban citizenship’. This emergent urban citizenship regime in Turkish cities organizes the distribution of substantive housing rights based on social inequalities among the urban poor, and thus consolidates and perpetuates these inequalities in society.     

Learning approaches for housing,service and infrastructure project organizations

Capturing and sharing experiences that may be applicable in several projects is generally recognized as a way of enhancing the performance of construction projects. Several studies have reported difficulties in applying learning approaches that could be applicable for a wide range of projects. The learning behaviour in three types of construction project: housing, service and infrastructure, is examined by the means of a questionnaire study including 51 construction projects and more than 800 responses from clients, designers, contractors’ managers, contractors’ workers and subcontractors. The effects of leadership, openness and influence are considered. Based on a factor analysis, three approaches to learning were identified: organizing for learning, experimenting and networking. While housing project organizations do not demonstrate any specific preferences, service project organizations show a focus on networking and infrastructure project organizations show the highest interest in experimenting. On the basis of these results it can be concluded that learning approaches are dependent on the type of project. Thus adopting different learning approaches for different types of construction project seems to be a more relevant strategy than implementing a ‘one size fits all’ learning approach for all construction project organizations.     

Estimation of project total cost and duration for housing projects in the U.K.

There are a number of variables which act individually and in combination to influence project total cost and duration. The extent of the effect of these variables is dependent on the nature of the project. A project is defined in terms of its constituent variables. This paper is concerned with a variety of project definitions within the category of housing projects in the U.K. The most influential variables are examined and, in quantified terms, the extent of the relationship between these variables and project total cost and duration is determined. To this end, two separate models are developed and proposed for the estimation of project cost and duration. While the model for the latter encompasses the former as a variable, the model for the estimation of project cost is independent from project duration.     

Forecasting construction durations for public housing projects: a Hong Kong perspective

The past thirty years have seen a great surge of international attention and discussion in the domain of construction time performance of building projects. Demand for residential construction has been continually increasing in Hong Kong since the 1950s, while an accelerated demand has been envisaged in the next few years up to 2001. This paper is based on the findings of the third survey in an investigation which aimed at determining a group of critical factors that affect construction durations of building projects in Hong Kong. This stage of the study attempted to generate standards (norms) for overall completion periods of public housing blocks, by modelling the durations of the primary work packages in the building construction process, i.e. piling, pile caps/raft, superstructure, EandM services, finishes and their respective sequential start-start lag times, in terms of the identified sets of critical factors (significant variables). Data from 15 case studies of standard New Cruciform type housing blocks was collected from the client and contractors. Multiple Linear Regression was applied in analyzing the project data and formulating a construction duration model. The forecasting performance of the model was next evaluated using an independent (new) set of project information from the client, in terms of a relative measure known as the Percentage Error. Both the general applications and drawbacks of the model are briefly presented and examined herein. The low values of percentage error (less than about ±10%) for overall construction durations confirmed that the model can be a reliable tool for predicting the construction durations of public housing projects in Hong Kong; and the research methodology used could well be extended to similar studies and duration forecasts in other sub-sectors in Hong Kong, as well as in other countries.     

Built on Solid Foundations? Assessing the Links between City-Scale Land Titling,Tenure Security and Housing Investment

This paper interrogates the links between city-scale land titling, tenure security and housing investment, using a case study of the donor-funded Land Management and Administration Project (LMAP) in Cambodia’s capital, Phnom Penh. It finds that LMAP activities centred on titling in planned residential areas with ‘informal’ tenure, despite residents exhibiting strong pre-titling tenure security and substantial housing investments. In contrast, ‘informal’ self-built settlements with high tenure insecurity and low levels of investment were excluded from project activities. Resultantly, the project did not increase tenure security and investment for the most vulnerable urban dwellers. The paper discusses the reasons for the project’s shortcomings, revealing policy implications for city-scale titling projects, and speaking to wider academic debates on titling in urban areas.     

Repackaging the poor? Conceptualising neoliberal reforms of social rental housing

This paper considers the need for conceptual renewal in comparative housing research. Since the mid-1990s, Kemeny’s model of ‘unitary’ and ‘dualist’ rental markets and Harloe’s classification of ‘mass’ and ‘residual’ social housing provision have been repeatedly recycled in comparative studies of ‘social’ and ‘public’ housing provision. Amidst international neoliberal policy mobilities, their models based on liberal welfare regimes wield particular power. Conceived during neoliberal cutbacks of public services, Kemeny’s ‘dualist’ rental market and Harloe’s ‘residual’ model of social housing similarly depict state-subsidised rental housing provision as bureaucratic, and targeted to the poor. Despite empirical change, these models are still used to describe liberal welfare regimes, and to theorise international policy convergence. Based on a review of recent market-oriented reforms of state-subsidised rental housing provision in the US, Australia and England; original neoliberal ‘sites of production’, this contribution asks whether these conceptual models still reflect the empirics. Findings diverge from the models, undermining their assumptions about how neoliberal reforms progress.     

The predictive ability of Bromilow's timecost model

Bromilow's log-log time-cost (BTC) model is tested and refitted with a new set of data for Australian construction projects completed between 1991 and 1998. It is shown that, as anticipated by earlier research, different parameter estimates are needed for different project types, with smaller industrial projects taking less time to complete than the smaller educational and residential projects. This results in the development of two separate models, one for industrial projects and one for non-industrial projects. No changes in parameter estimates are needed for projects with different client sectors, contractor selection methods and contractual arrangements. Alternatives to the log-log model failed to produce any improved fit. Finally, the results are compared with previous work to indicate the extent of changes in time-cost relationships in Australian construction projects over the last 40 years. This indicates a clear improvement in construction speed over the period. Furthermore, the ‘public’ sector group in particular has exhibited a greater variation (up to 132%) over the years.     

Comparing contributors to time and cost performance in building projects

Identifying the relative strengths of the linkages between procurement sub-systems and project performance was initially hypothesized to be useful for developing guidelines for the formulation of a performance-oriented construction procurement system. A comprehensive model was developed to incorporate all significant procurement sub-systems variables, together with ‘non-procurement’ related (or ‘intervening’) variables to explore and evaluate such linkages. The multiple regression technique was applied to analyze the data from 32 Hong Kong-based building projects and the results were compared with reality. The results suggest that procurement sub-systems variables are less significant than the non-procurement related variables in predicting time and cost performance levels on Hong Kong building projects.     

Calibration of hydrodynamic model-driven sewer maintenance

Sewer performance is typically assessed using hydrodynamic models assuming the absence of in-sewer defects. As a consequence, hydraulic performance calculated by models is likely to be overestimated, while the real hydraulic performance of the sewer system remains unknown. This article introduces the concept of ‘hydraulic fingerprinting’ based on model calibration to identify in-sewer defects affecting hydraulic performance. Model calibration enables detection of changes in hydraulic properties of the sewer system. Each model calibration results in a set of model parameter values, their uncertainties and residuals. The model parameter values also incorporate the antecedent condition of the catchment of the event calibrated and are therefore less suitable to identify in-sewer defects. The residuals on the other hand, and more specifically their absolute values, statistical properties and the correlation between residuals at different monitoring locations are suitable as indicators of the occurrence of in-sewer defects. This allows the application of ‘hydraulic fingerprinting’ based on model calibration, where the ‘fingerprint’ is defined by the model parameters and the residuals. The concept of ‘fingerprinting’ is demonstrated for the combined sewer system ‘Tuindorp’ (Utrecht, the Netherlands). The results show that ‘hydraulic fingerprinting’ can be a powerful tool for directing sewer asset management actions.     

Training for tenants: ‘Citizens’ and the enterprise culture

The recent growth of tenant participation in British council housing has been accompanied by widespread acceptance of the importance of tenant training for genuine and effective user involvement in housing decision‐making. This article focuses on the sponsorship of tenant participation and training by the Conservative central government. Official promotion of tenant training is linked to the distinctive models of ‘citizenship’ informing government strategy and its cultural project of creating an ‘enterprise culture’. Government‐financed training for tenant management organisations, focusing on ‘competencies’, is found to be formally consistent with these political principles. But it is concluded that, in practice, this training can have unforeseen outcomes and foster alternative views of ‘citizenship’.     

Exploring the politics of project learning

Competitive advantage for project success will only be realized when project team members effectively access, absorb and apply the multiple learning opportunities that exist within and across projects and, manage the political dimension effectively. These items as individual entities are important project variables to be addressed. Both are also linked. In making a contribution to understanding this nexus, this paper combines and explores case study research findings from ‘within a project’ and ‘across projects’ from two countries, which illuminates some ‘central agitators’ of politics impacting project learning. These revelations have implications for both practitioners and project management researchers.     

Valuation techniques for infrastructure investment decisions

Public infrastructure owners are increasingly soliciting BOT arrangements to deliver needed infrastructure facilities. Such arrangements potentially preserve a public owner's capital capacity for allocation to projects that cannot support themselves by essentially ‘pulling’ projects from the private sector. Before soliciting these arrangements, however, owners should independently evaluate a project's economic viability to fully appraise the issues and variables involved. Unfortunately, project analysts often apply evaluation methods without regard for their assumptions and limitations. A case study of a toll road project in the USA provides the basis for examining the assumptions behind both traditional and option valuation models. The case demonstrates the use of an option pricing model to augment traditional project evaluation by capturing strategic considerations, in this case the value of project deferment. The presentation illustrates that the selection of a valuation model depends critically upon the characteristics of a project's variables and that informed judgment remains an integral part of the decision‐making process.     

Contemporary tendencies in Colombian urban planning: the case of the ‘Planes Parciales’ in Medellín

After decades of internal conflict, Colombia is experiencing economic growth and urbanization. It remains, however, one of the most socially unequal countries in Latin America. Medellín, acclaimed the most innovative city, implemented large-scale transport infrastructures to link socially excluded areas to the city; new educational and cultural facilities; new public spaces and housing projects, rooted in the Barcelona model. This so-called ‘social urbanism’ has shifted local perceptions, though its socio-economic impact has been questioned. This paper focuses on the less analysed transformations in planning policy and management through two instruments: the Land Use Plan (Plan de Ordenamiento Territorial – POT) and the ‘Plan Parcial’. The research, based on a desktop review, interviews and site visits, examines the application of these instruments in Medellín, reflecting on how they contribute to achieving the aims of ‘social urbanism’. The paper explores the differences between ‘rhetoric’ and practice that are reflected in those between the city’s overarching plan (POT) and the implementation of ‘planes parciales’, focusing on redevelopment, urban renewal and urban expansion. Such differences mirror the deficiencies in the adaptation of the ‘urban project’ Barcelona model in Medellín, and provide the basis for a call to develop ‘social urbanism’ that is genuinely more socially, territorially comprehensive and inclusive.     

Data modelling and the application of a neural network approach to the prediction of total construction costs

Neural network cost models have been developed using data collected from nearly 300 building projects. Data were collected from predominantly primary sources using real-life data contained in project files, with some data obtained from the Building Cost Information Service, supplemented with further information, and some from a questionnaire distributed nationwide. The data collected included final account sums and, so that the model could evaluate the total cost to the client, clients' external and internal costs, in addition to construction costs. Models based on linear regression techniques have been used as a benchmark for evaluation of the neural network models. The results showed that the major benefit of the neural network approach was the ability of neural networks to model the nonlinearity in the data. The ‘best’ model obtained so far gives a mean absolute percentage error (MAPE) of 16.6%, which includes a percentage (unknown) for client changes. This compares favourably with traditional estimating where values of MAPE between 20.8% and 27.9% have been reported. However, it is anticipated that further analyses will result in the development of even more reliable models.     

Pricing strategy in the US construction industry

This paper presents several issues related to pricing in construction. First, problems with current pricing strategy in construction are explored. Second, pricing strategies based on a market-based approach are proposed. Third, survey findings of the top 400 US contractors are presented regarding their current pricing practices and the applicability of the proposed pricing strategies. In conclusion, the belief that current pricing strategy in construction is predominantly cost-based is confirmed by the survey findings; indeed, in setting the markup, most contractors rely on their intuition after subjectively assessing the competition. The three internal pricing variables that have the largest statistically significant contingency coefficients with pricing strategy are ‘marketing intelligence capabilities’, ‘annual contract value’, and ‘the type of client in most projects’. ‘Owner's characteristics’, ‘competitors'characteristics’, and ‘market demand’ are statistically significant external variables in making pricing strategy decisions. A change of bidding procedure is proposed so that all parties in construction can maximize the benefits of market-based pricing strategies.     

浅谈保障性安居工程造价控制与管理

保障性安居工程建设是一项重大的民生工程,它是着力解决城镇困难家庭的住房问题,保障社会和谐稳定,促进经济发展的重大战略决策。我国从中央到地方,都高度重视保障性安居工程建设,大规模建设保障性安居工程,时间紧,任务重,如果工程造价不合理,必然影响住房工程质量安全,影响能否及时交付使用,影响保障对象在使用过程中是否满意,这就要求我们做好保障性安居工程造价的控制、管理工作。     

‘From Choice to Chance’: choice-based letting use in forced tenant relocations in New South Wales,Australia

Abstract

The redevelopment of large social housing estates has emerged as a central policy response to address housing affordability and social housing crises in Australia. These projects, often done in partnership with the private sector, are seen as opportunities to leverage government land assets and increase densities to expand social and private housing stock. While extensive research has been conducted on the rationale and processes of estate renewal, less attention has been paid to tenant relocation practices. This is the focus of this article. In particular we explore the New South Wales Government’s use of a choice-based letting program called ‘My Property Choice’ (MPC) that involves tenants bidding via a ballot system for available social housing properties. We argue, despite policy rhetoric emphasising resident ‘choice’, MPC emerges as a chance-based process for tenants seeking to ‘win’ their desired relocation destinations.     

Assembling an innovative social housing project in Melbourne: mapping the potential for social innovation

Abstract

In Australia, echoing trends in the UK, US and Canada, provision of social housing has transitioned from government-led mechanisms to an increasing focus on partnerships between private developers, government and the not-for-profit sector. In this context, social housing is often achieved via the ‘cobbling together’ of necessary resources over time. This article focuses on an innovative social housing project in the inner west of Melbourne, Australia, that involves the modular construction of 57 transportable dwellings located on government-owned land. I apply a theoretical framework that combines insights from social innovation literature and assemblage to understand the process of assembling a pilot project and to chart how the project may be scaled up or scaled out to challenge the system in which homelessness occurs. The research highlights the role of community housing providers as ‘pivot points’ in the social housing sector and acknowledges the importance of credibility, funding, legislative change and construction innovation in scaling housing social innovations.     

A Housing Affordability Standard for the UK

Since 1990 there has been extensive exploration of the meaning of housing affordability by members of the academic, professional and advocacy communities in Britain. These debates have revealed weaknesses in the traditional ratio standard of affordability and led to arguments in support of an alternative, residual income concept of affordability. However, so far there has been only limited success in operationalising and applying the residual income approach in the UK. In the US, by contrast, arguments in support of a residual income approach to housing affordability emerged in the late 1960s and early 1970s, culminating in the formulation of operational standards utilising normative family budgets. This paper draws upon the US experience to formulate a residual income housing affordability standard for the UK that utilises the non-shelter components of the Family Budget Unit (FBU) ‘Low Cost but Acceptable’ budgets as the normative standard for minimum adequate residual income. The paper concludes by suggesting how use of such a ‘shelter’ poverty standard to assess housing affordability problems and needs in the UK might yield results that differ from those based on the ratio standard.     

Displacements in the name of (re)development: the contested rise and contested demise of colonial ‘African’ housing estates in Kampala and Jinja

This paper examines historical and contemporary processes of urban (re-)development and displacement in Uganda. Particular focus concerns the often conflicting strategies employed by urban managers and residents to plan, govern and live in both the late-colonial and early twenty-first century city. Both eras can be considered significant, even momentous, for the prominence of strategic projects of socio-spatial urban reconfiguration that incorporate(d) powerful discourses fusing land and housing development with societal progress and national development. The former project putatively centred on orchestrating African development and welfare, the latter on the more ambiguous project of re-development. The ‘Good City’ and the ‘Good Citizen’ are used as heuristic devices to examine the planning ideals and rationalities that inform(ed) these projects and the conflict of rationalities they provoke(d), particularly in terms of competing visions of the good city and good citizen. The paper emphasizes that current projects of redevelopmentalism do not take place in politically inert or historically benign space. Rather, it is shown how historical and place-based specificities articulate with and mediate the process of redevelopmentalism in Kampala and Jinja.