Hi Tom,
Just wanted to update the thread. I applied for a modification of the fire sprinklers based on the proximity of my building to a hydrant and a fire station, and on the fact that there is no new construction occurring on the property. I obtained the mod with the condition that in place of fire sprinklers I had to install a Fire Alarm System. Strict adherence to code means that a Fire Alarm System is composed of a central panel tied to smoke detectors, strobes, horns, and pull stations throughout the building, that will automatically trigger a call to a particular call station (depends on the vendor/installer), which will then call the fire dept and 2 personal phone numbers on file.
In the case of my tiny triplex, this would mean that when a tenant burned the popcorn or sparked up a joint at an odd hour, the whole building would go off in lights and honks and false alarm calls to make me panic!! At an estimated cost of about $14000 (+headaches.) The installers that I spoke to had never heard of this type of system being necessary on such a small scale. I had to go to the guy who wrote the modification several times to clarify it and bring the system down to scale and more realistic for a building that size.
Do not misunderstand that I am opposed to safety in favor of my pocketbook. There is more to this story! I am happy to explain to any investors dealing with a similar issue. My experience is very specific to the City of Los Angeles, but hopefully it helps someone.