Looking to do an addendum to the lease regarding parking. Current rental agreement doesn't speak to the subject. Last year I added 3 parking spaces for two apartments. 1 for each unit, 1 for a guest. I have 1 apartment which is taking up 2 spaces consistently, which is fine, the other tenant only takes up 1, but then they are also tandem parking behind the 2 and boxing in the other tenant, they can barely get by when this occurs. They also 'flip' cars from auctions and often have non registered vehicles in the spaces, they switch plates from one car to the next. They conduct business deals in the driveway when they sell the cars which invites strangers on to the property to look at the cars, the other tenant has complained to me about feeling uncomfortable when this happens as they are on the 1st floor and closer to the parking area. Any ideas on wording a clause that I will then have the tenants agree to? Needs to encompass all these issues. Thanks!