The growth of demand for custom software development services predetermines the appearance on the Russian market of new companies offering this service. Some of them come from related IT-spheres — distribution of hardware, consulting, advertising services, development of web-sites. Such companies participate in tenders and, in case of victory, hastily recruit a new team in the labor market to implement the project. This article describes typical errors of such teams in the management of projects of custom software development: from project planning to product and HR-management in the team. The article provides ways to identify such errors by analyzing project artifacts: project plan, risk plan, internal labor accounting documents in the team and architecture diagrams. For each group of detected errors the recommendations to correct the effects are presented, proven to reduce their negative impact. Recommendations for improving processes and artifacts in custom software development projects will be useful for executive managers in customer companies and project managers who lead newly formed software development teams in IT-companies from related fields.