The invention consists of a method of real-time tracking of production schedules and timetables for one or more homebuilding developments, comprising: a) assigning one or more mobile devices to one or more users associated with projects and lots, the mobile devices providing access to project and lot information, including: lots for completion for each project, tasks for completion for each lot, assignment of suppliers and material to specific tasks, projected and actual times for completion of tasks, contact information for suppliers and invoicing information for payment of purchase orders upon task completion; and each mobile device capable of operating independently without a continuous connection to a central system; b) tracking performance of production tasks for each project via real-time monitoring by the users; c) reporting task performance data to a central ERP system and comparing real-time performance of the production tasks to scheduled timetables for the production tasks; d) enabling modification and updating of scheduled timetables for production tasks based on performance data for the production tasks and additional real-time input from the individuals; e) coordinating compensation for production activities with the performance data, including enabling payment for completed tasks from the mobile devices via purchase orders; f) synchronizing, on a sequential basis, updates to scheduled timetables and other information between the mobile devices and the ERP system.