I was trying to figure out if an assumable loan could be a decent conduit.

What are some ways to get a fannie mae or conduit loan approved for a first time buyer of large multifamily (for a stable cash-flow buy and hold)?

It also provides a fire conduit between units.2) Depending on how the ductwork was run, you may be looking at substantial rework (opening walls, building bulkheads, etc) to separate the two units.If you have a boiler and hydronic heat, there may be a similar degree of effort to separate the plumbing runs - unless the system is new enough to have been installed with independent loops from a common manifold.  

Must have missed my post above, you have to file a lien, a deed of trust on the amounts you financed in a conduit financing arrangement just as you would if you made a second mortgage.

Among the components included are window and door locks, security cameras, recorders, monitors, motion detectors, security lighting, alarm systems, entry and access systems, related junction boxes, associated wiring and conduit).You need to test whether the costs you incurred bettered, restored or adapted the particular system, not the impact on the building as a whole.When you purchase a building, the building structure and all of the various building systems are depreciated as a unified whole based upon the cost of a building.

I was going to run conduit on the outside of the building and run it into the 3rd floor.

I was going to run conduit on the outside of the building and run it into the 3rd floor.

There's a lot that goes into safe work that the newbie just doesn't know so getting it to work and being safe can often be two very different things.Good advice... you will find that working with the heavy wire gauges typical of 4 wire installations is a feat in itself especially if your feeding it through existing conduit or floor joists, from the panel to the outlet.

You can have an I/O note in commercial transactions, however if you sell in a residential transaction having your buyer assume that commercial note will be a violation of residential lending requirements, as all amounts financed, directly from equity or through a conduit financing arrangement must be amortized.

You could run it in a PVC conduit like you do with electrical wires, but you will still want a PEX tubing rated for outdoor use (a grade "A" PEX rated for outdoor use or a sleeved PEX like PEX-AL-PEX).