This study explores the knowledge level of construction industry professionals’ readiness for green construction sustainability aiming to reduce carbon emissions from carbon trading practices in Nigeria's construction industry. The research appraises the current knowledge levels and response readiness of carbon emission trading among construction professionals, the tradeoffs of carbon trading practices, and the challenges hindering adoption and implementation. A descriptive research design was employed, using a questionnaire survey to collect data from construction professionals in Nigeria. A total of 263 responses from a total of 420 questionnaires distributed were retrieved representing a total of 63%response rate. Data collected were treated, coded and analysed by principal component analysis (PCA). The findings indicate that carbon trading can significantly reduce greenhouse gas emissions and promote sustainable development. The study recommends implementing carbon trading policies and regulations to encourage the adoption of green construction practices in Nigeria's construction industry. The research contributes to the existing knowledge on carbon trading and green construction, providing insights for policymakers, construction professionals, and stakeholders in the built environment.