A kayaking company that offers kayak rentals and guided tours out of Brackett's Landing Park in Washington, is upset because he wants to verify his Google Local business but since he doesn't have a physical business address in the park, he cannot mail a PIN to that park's address.
He runs the business outside of his house and that is where all the bills, legal work, etc go. But the business operates and serves clients in the park. The park is the place he wants to be found.
The deal is, he is out of luck.
(1) You need to be a business of operation where anyone can walk in during business hours and not have to schedule an appointment.
(2) You need a physical address at the location you want to be verified.
But as Michael Blumenthal said, Google does make exceptions and you can try by emailing Google at this form.
Forum discussion at Google Maps Help.
Image credit to BigStockPhoto for park image.