As has been said a few times above, make the offer contingent. The above has said to make the offer contingent on seeing applicable paperwork but all that does is have you going through it, yourself. If it were me, I'd make the offer contingent on there being no restrictions whatsoever on parking your RV on the property and then having your closing attorney review it for that purpose. Word it so that, if any restrictions are found, the deal is null and void with all funds returned. Your Agent may not like it (or may even try to tell you that you can't) but there are plenty of hungry Agents out there who will do what you ask.