Nowadays, organisations are encountering ever-more challenging demands, and those that do not adapt risk closure. This trend is particularly notable in small and medium-sized enterprises, where deficits in technology adoption are often particularly conspicuous. Companies that succeed in streamlining their sales process are more likely to enjoy better outcomes, underlining the crucial requirement of implementing technical solutions to tackle these problems with optimal efficiency. Therefore, the aim of this investigation is to deploy a web-based system for the purpose of enhancing sales management in a company operating in the field of real estate and construction. The system was constructed utilising Extreme Programming XP methodology, consisting of four phases: planning (user stories), design (system outline), coding (system programming) and testing (testing). The introduction of a web-based system highly streamlined the company’s sales process, reducing information search times by 64% and decreasing time spent on recording sales data by 62%. The system enabled greater sales activity during the day, resulting in a 72% increase in task performance. It also aided the accounting department in streamlining revenue reporting. This demonstrates that the system is an efficient tool for enhancing the sales process, reducing yearly tasks, and minimizing recording time.