A method for enabling collaboration between individuals to design, construct and maintain a building. The method comprises providing a network based computer system including at least one server and multiple clients. The multiple clients allow respective individuals to interact with the server. The server includes a machine-readable storage, which is encoded with software for execution by a CPU for allowing individuals at the respective clients to create, execute and manage projects associated with at least one of a design phase, construction phase and maintenance phase of the building. Each project comprises one or more events that are related to time. The method also comprises storing in the machine-readable storage events as they occur during execution of each project to create a building project database spanning at least the design phase and the construction phase and optionally the maintenance phase of the building.