Bolandpayeh Design and Development Company was established in 2007 to create an independent consulting unit in the field of design, engineering management of design and construction projects and supervision of design operations of Bolandpayeh Company's projects and other construction companies. Bolandpayeh Company cooperates with this company with the aim of integrating, specializing, increasing productivity, and recording engineering knowledge in a centralized manner.

Tamin Tejarat Company was established in 2017 with the aim of optimally utilizing the credits created by Bolandpayeh Company in order to take advantage of the opportunities available in the supply chain of Bolandpayeh Company projects and enter the market for supplying materials for Bolandpayeh Company projects and other construction companies. Bolandpayeh Company cooperates with this company with the aim of recording and synergizing organizational knowledge in the field of supply in a centralized and process-oriented manner, from supplier evaluation to delivery, as well as taking advantage of economies of scale due to purchasing consolidation.

Saman Machine Aria Company was established in 2006 with the aim of providing services related to the supply, maintenance, and repair of machinery to the projects of Bolandpayeh Company and other construction companies inside and outside the country. Bolandpayeh Company cooperates with this company in order to increase the executive power and optimize the project capacities in implementation and operation.

The official insurance brokerage company, Moein Masir Amn, was established in 2015 with the aim of transferring project risks from Bolandpayeh Company and other companies to insurance companies. Bolandpayeh Company cooperates with this company with the aim of registering, transferring project risks to the insurance company, managing risks, and monitoring the status of the project.