This is basic, but a real, completed business plan will tell you if it's going to work. This is how businesses and lendors calculate viability.
I'm guessing I have seen 100 times, a thread started that states, "I'm starting a business and am ready to sign a lease. What is a business plan?". This is a huge red flag. If someone is looking for space, a business plan should have been started at least 6 months before, shorter if the investment is lower, such as home kitchens.
And I'm not talking about a rough draft with a bunch of useless speculative data. I mean the kind that has every competitor and related businesses broken down by product and price (and estimated cost), complete demographics, and total costs down to estimated utilities, from data collected from real numbers.
This is my third start-up business and I just started a fourth last week. After years of owning businesses, it gets pretty easy. For my new, unrelated, business, it took only a week to do a plan, but the startup capital was substantially lower than a commercial kitchen buildout.
For me, I had a rough beginning. A few months after I opened, my mom had a stroke and I had to put the business on the back burner for four months. But I timed the new efforts to a time of year when spending gets better and it took off, slowly, but with a steady build. I can actually control my sales by manipulating Google Adwords.
For my retail store, business plan completed, I am building a clientele that will have a large enough base to support the retail operation from day one. I have no desire to give my profits to a landlord until the business can support it. I'm in no hurry. Just like with the bakery, all fixtures, equipment, and decor are purchase with csh and stored. I will open debt free. This is a big factor in whether or not a business will be profitable.
So please don't think me mean or killing a dream when I post the hard facts of what is needed to open a business. With an 85% failure rate, higher for food service companies, it is important to plan, get experience, and get educated in areas of weakness. There really aren't any shortcuts but luck.