Three of them said they couldn't do the job without hardwiring a fire alarm system because it was code for the county.  

They perform 6-month Inspections on your property to assure you have the basic working units/alarms/CO sensors, etc.  

My alarm bells are sounding.

I found out when house alarm went off at 2, 3 or 6 am.

I did all of the rest, hanging smoke alarms, trimming trees, pressure washing etc.

On my MFU, the city fire marshal did an annual inspection and I swapped smoke alarm batteries and fire extinguishers at that time. 

I was the owner on the ABNB/VRBO sites, I received the $ from the clients through the A/V sites, and then paid the manager-people  20% of the booking for the fact that they actually responded to the client enquiries, set up the checkin and cleanings, dealt with phone calls and contractors when there were plumbing leaks, fire alarms going off, etc.

CARRYING COST SUCH AS UTILITIES, INSURANCE, ALARMS, ETC. 3.

It also has these early certificate issued, certificate redeemed.For example, in 2014 the cert read $6353 but then $6677 was actually paid.What are those and are those why are they causing the tax bill to rise at an alarming rate?

This became a lot more interesting today....In short, we 'gained' access to the property today and there was an alarm system.