This study focuses on the investigator's perspective of calculating risk in a contractor's tender figure for a public building project. The purpose of this study is to look at professional's opinions on the impact of risk estimation on a contractor's bids for a public building with the goal of assuring a timely completion of the project. The study's goals include determining the sort of evaluating risk that affects a contractor's tender figure. To determine the pricing variable that the contractor takes into account. The purpose of this study was to find out how construction experts felt about the impact of risk estimation on a contractor's tender figure. To determine the risk's influence on a public project. Contractors and building experts participating in public projects in Birnin Kebbi were given questionnaires as part of the research approach, which included the use of both primary and secondary sources of data. A total of 50 questionnaires were examined using descriptive statistics, with the mean and ranking being used to ascertain the respondents' opinions. The findings revealed that poor design has a significant negative impact on a contractor's tender figure; the study also revealed that inflation has an impact on the financial risk of a contractor's tender sum in Birnin Kebbi; and the study also revealed that contractor competence is a factor in construction risk affliction affecting contractors’ tender sum. The research concluded that a drawing should be certified by the client to ensure that it accurately represents the brief, in order to reduce the effect of design risk on the contractor's tender figure; construction professionals should be aware of these estimating risk factors and follow the Risk management procedure for their proposed project to be completed on time and on budget; and the government should formulate new policies that will improve efficient project delivery while pricing by contractors.