It absolutely doesn't matter if an M-R bond expires at a certain point, that doesn't mean you get to stop making payments. As I did mention, M-R bonds can be used to fund construction of a public facility, let's say a town hall. However, M-R bonds can also be used to maintain the property once it is built, funding such things as cleaning, maintenance personal and equipment, and so on.
In other words, just because you pay off the initial improvement bond doesn't mean that M-R payments go away. You need to check with the municipality where the property is located to find out if they are using M-R for ongoing operating expenses. If so, those payments - or at least a portion of them - may never go away.
you or your agent can check on the Placer County Tax Collector site:
Find the bill and the direct charge code/name, then click on the direct charge link and it will display all the contact info for each direct charge, that is who you call to find out details of the bonds and how much time is left.
They are normally paid with your property taxes. Most bills will show a phone number to call for the mello roos to get information on when they expire. But they do eventually expire. Hope that helps.
Kirk Real Estate