What if the smell was coming from a broken sewer line that was back-gassing into the unit, as well as leaking all around the foundation and rotting wood beams.

Water is now leaking through the ceiling into my tenant's unit, and it's worsening with every rain also the neighboring unit has sever water damage (like a pool inside and it is owned by the HoA) and water from it leaking very dirty water from the shared wall to mine.

When you shoot seven photos on your iPhone, you tell the guest you don't care.

The best defense against rats entering your property is to seal off all entry points (holes, cracks in walls), remove food sources (dirty dishes, food left in trash cans), and water sources (like leaks). 

I only say that because the pictures that you posted above look like iPhone pics. 

Even new machines can experience issues, and when those issues mean that water is leaking all over your laundromat, you’re going to want to respond to that quickly.It may not be that your laundromat requires that many hours in a week of actual work, but the times your laundromat will demand your attention can often happen unexpectedly.In a typical week, we would work 7-10 hours on our laundromat, either being there physically or working remotely.

They are far more common now and harder to find models without but:1) these add cost to the purchase price2) they don't bring a lot of value3) they can leak or detach and damage the propertyI own around 50 doors and I cap off the line at the wall or in the basement with a valve and a cap so the potential for leaks is 0.00001% :-) 

What the city housing clerk is telling me is that there was a water leak from behind the sink pedestal on the second floor bathroom that has been running for a week. 

Just because the costs might be in the furture does not warrant not budgeting for those known expensesThen there is the misc costs of asset protection, bookkeeping, unexpected utilities (such as between tenants (tenant turn over) or failure not attributable to the tenant such as slab leak).  

Both bathrooms need a complete remodel as well as the kitchen, the ceiling in 2 of the bed rooms are bowed (previous roof leak that was fixed) so new ceiling drywall, appliances, flooring, and paint throughout.