If you intend to occupy but are prevented due to health and safety issues, that's ok.

The building has no house panel, so installation is going to be expensive any way you look at it.My question here is are the older battery powered detectors "grandfathered", or will I need to upgrade the detectors immediately.

If my health was my highest life priority and I was diagnosed with a serious illness would I take drugs?

Selling a little triplex I nursed back to health from a lot of years of bad management and neglect.  

Average tenancy is over 3 years per unit.Seller used to have 9 units and recently sold two units to the tenants. one for 32K and one for 35K. he wants to sell the rest all together due to health reasons.No deferred maintenance to past due HOA dues.

By the same token, being an informed consumer is important to your financial health.  

My tenant used a battery jumper cable end and an alligator clamp to run juice from the overhead wires and around the electric meter.

"Three factors drive Houston's economy - the price of oil, the value of the dollar, and the health of the U.S. economy.

This is such an important topic I wish to ask this:  even if the animal threatens the health of a neighbor or roommate via severe allergies or asthma?

but they often know the clients personal and financial status and they (the health care professionals) hob knob with the lawyers that are handling the wills and estates...