It takes plenty of time to properly research and write an effective business plan. Estimates of 100 hours or more are not unreasonable. A startup plan can take even more time.
An effective business plan can open the door to investors and lenders. It must be thoroughly researched, fact-based, and strategically consistent. It must show that the business proposition has been well thought out down to the detail level. It must be supported with pro forma financial schedules that align with the narrative.
Successful business plans are concise and easy to read. They tell the story in a way that resonates well with investors. In most cases, getting professional help is the best route to an effective business plan.