You need to check codes and with a realtor. We put a pad in on the side of our house in Central CA including a 30 AMP plug. For our codes, flatwork didn't require a permit. Yes, the eletrical did but I was doing other electrical work at the time.
On the realtor, we were in an area with high RV ownership due to the proximity to Yosemite, Kings Canyon, and Sequoia. Putting RV parking in added $5,000 in value to my house and cost me $3,000 to install. Oh, and I got to use it for 5 years. I sold in a week and the buyer needed the parking and there were not other comparable houses on the market at the time with RV parking.
Worth considering and yes this depends greatly on the popularity of camping in your area.