I did a quick search and found that the Multifamily properties here in the South Bay are really scarce in supply.

So if you have an HOA fee, or a management company, or you buy furniture for your rental, or repairs, that can all be deducted so your taxable income won't be the full $100.00, it may be $80.00, bringing down the effective tax rate.

Yes, the effects will be major and global (beyond what we are seeing with supply shortages as a result of COVID) but we haven't seen one yet...

So limited supply and steady demand keeps inventory low and prices stable even in a downturn;)  

Large funds continue to move towards real estate, which moves more of the supply towards "leased" homes.

Problem is - not only does the hot and cold water supply pipes freeze, but so does the entire hot water heating system.

The tax credit is keeping prices at their inflated level, interfering with the market's ability to adjust itself, defeats all the logic of economic principles.You can't fix a supply problem by superficially influencing short-term demand; in the long term it will take the real estate cycle longer to normalize because of these interferences.

Has office with 2 rooms, 1.5 bath, kitchen, storage building for supplies and equipment, shipping container for building supplies, and 2-car garage.

A good plumber can remove the water meter and use compressed air to pressure test the water supply lines.

You can still buy  the full one-piece units at plumbing supply houses.My guess is there is no wall board behind your existing unit, as they are installed directly against the framing.