Need Parking Space for Small Trailer

I am searching for a space (indoor or outdoor) to store my aluminum flatbed trailer. Trailer is 12 feet long, 6 feet 3 inches wide, and 2 feet tall. I expect to use the trailer 3-5 times per month. Willing to pay $300 per year in advance. Also willing to consider trading storage in exchange for use of trailer. Max payload is 1700 lbs.