Was it the same real estate agent for both units? If so there would seem to be a pattern of buyers being told that parking on common property/visitors car parks is OK. Personally, if it was the same agency, I would send off a letter saying that “… the new owners said they were lead to believe that it was OK to use these areas as additional parking, however we find it hard to believe that a reputable real estate agency would advise this. However, in future with any sales in this complex, please ensure that potential buyers are clearly made aware that they are only have the parking/garage attached to/under the unit they are purchasing”.
If it was two different agencies then it may be that the buyers only heard what they wanted to hear. This has obviously occurred here in this complex due to the number of owners/residents who are shocked when we tell them they can’t park anywhere except their own garages. Some still displaying shock years after moving in. Perhaps the agents say “…and of course you have visitors parking next door to you” which the buyer hears as “….and of course you have parking next door to you”. And even if they did hear the visitors part, they probably think it is only visitors parking if visitors are there. So if they’re not there then its just parking….something our residents try over and over again.