Although I cannot see to which home you are referring, it is easy to find out whether a home is on septic or not. I usually call the city or county permits department and first off, they tell you if the home is in within their jurisdiction. Once you get to the right department, they will look it up and tell you over the phone whether it is one septic or not. If you want a copy of the records saying whether or not it is on septic, you will have to go down to the department in person and pay a small and reasonable fee. I have always found the people in both the city and county permits department to be cordial and efficient. It has been awhile since I have called them so I can't say who you need to speak to, but believe it or not, whoever you call will guide you to the right person. Of course, this isn't one hundred percent full proof, but I find it to be the most efficient place to start.