I guess it doesn’t help that I live in a very remote area with ancient, crappy homes.

During inspections and walk-throughs with professionals the ancient waste sewer line were flagged as an issue because it is very old, probably cast iron or something.

The WLB lease (unless you use an ancient version) states that if nothing is done it defaults to a month to month.You can send them a Notice of rent increase (which you can get from WLB as well) sign an new lease, or do nothing and go mtm.I find that a 60 day notice from the tenant is not very helpful, most owners don't start showings until after the unit is vacant, so what's the point?

Well, you see, it all goes back to the ancient Greek lunar calendar system.In short, it's "loony".I think they mental shortcut for a "month" being different from a week is easier for regulators to grasp.

Can anyone comment on what the cost would be for slamming 1/4 drywall over ancient plaster walls?

They have been good as tenants, but I'm charging well below market with the agreement that the units are as-is and non-residential.The building is partially renovated, partially demo'd, has ancient plumbing and electrical.

Most are 'ancient' conversions of larger homes and are not very nice.

There's a huge learning curve to buying ancient crapshacks in Philly that have been converted into duplexes.

Rent Manager's interface is ancient compared to Buildium.

Of course, if they are ancient single pane windows, it may make sense to replace them, but by itself a stuck window can usually be fixed quite readily.