An assessment of the methodological challenges in valuing contaminated land for compensation in rivers State, Nigeria

Valuing contaminated land presents significant methodological challenges, particularly in determining appropriate compensation for affected communities. This study examines these challenges in Rivers State, Nigeria, with a focus on the valuation methods used, the difficulties faced by valuers, and the implications for compensation outcomes. Employing a descriptive research design and a quantitative approach, data were collected from 98 estate surveying and valuation firm through a total census approach. Findings indicate that the Cost Approach (RII = 0.83), Market Comparison Method (RII = 0.80), and Income Capitalization Method (RII = 0.76) were the predominant valuation techniques, preferred for their reliance on observable market data. Conversely, the Residual Method (RII = 0.58), Contingent Valuation Method, and Hedonic Pricing Method are used less frequently due to their complexity and data limitations. The study also reveals that 60% of respondents experienced substantial challenges in valuing contaminated land, particularly due to uncertainties in remediation costs, difficulties in estimating future land values, and a lack of reliable environmental data. Furthermore, 62.2% of respondents indicate that compensation outcomes are often inadequate due to valuation inconsistencies. To address these challenges, the study recommends the establishment of a clearer legal framework that recommends the use of economic valuation methods, improved access to environmental data, and regular environmental monitoring to enhance valuation accuracy. Standardized guidelines and valuation methods, enhanced training for valuers, and regular stakeholder consultations are also proposed to ensure fair and transparent compensation practices. The study concludes that refining valuation methodologies and adopting a more comprehensive approach will improve compensation outcomes, ensuring that the economic, environmental, and social impacts of contaminated land are adequately considered.