What is a business plan? A business plan sets out the method for running a specific activity over a specific future period. Why are business plans needed? Business plans are needed essentially for the four following reasons: 1. A formal, explicit document of the planning process; 2. A request for finances; 3. A framework for approval; 4. A tool for operational business management.
If a document needs to be developed that requires input from other disciplines_Finance, HR, Property & Facilities, Marketing, Procurement/Supply Chain_ then most likely you are looking at a team building effort to get the job done. In any event, don't look at the task as only as a roadmap that leads to a profitable product or enterprise. Business plans are a great way to build team buy_in, force a thorough review of options, define objectives, establish benchmarks to judge performance, and help arrive at a plan_of_action. Ultimately, it can lead to a Project Management approach to implementing a plan and that can be as involved and detailed as is necessary.