I have a product idea for a very specific niche (university students living on campus). When does the product validation take place? before creating a simple business plan and a website? or after having the website and social media running?
it depends on the kind of product. If the product already exists but you are bringing in your product idea with better features and benefits I suggest that you create a few samples (100 seems ideal) and give it out, either free or at a lower price and ask for a review on what needs to be done.
If its fairly new in the market place and no one has ever done it before, how about you you conduct a survey on the idea itself or hype it up to see the number of people who will be interested to join a waiting list.
Some business ideas can start without a proper plan at first, a one page laid out plan is great. You can always validate the need of your product idea before or after your website.
We all have ideas on what needs to be done on what and what products needs to be created and how, but the thing that holds most people back on bringing their idea to life is actually taking action.
Let me know how it goes if you consider to take action on this.