We later added duct work and there was no question on permitting as we rehabbed the inside as well.

They present their social media followers with a series of curated options for a specific area of each house, and their channels vote to decide on a lot of the finishes of the home - paint colors, carpets, door knobs, light/lamps, kitchen layout, etc, etc.The social media houses aren't especially lucrative, as they only do about 2 per year.

I like their best quality like the hotel collection and also get your towels the same color too along with dish towels.

All the duct work was in the concrete on most.

HVAC/Duct work is a wild guess

Some of the major rehab involves Siding, portion of roof, new sidewalk, splitting electric (new panel boxes and meters), heating (new furnaces and re laying of duct work), water (new water heaters), portion of broken sewer pipe replacement, replace electric wiring to 2 units, new kitchen, bath, flooring, windows, doors (interior and exterior) in all units. 

All penetrations for pipes, duct work, wiring or anything else much be caulked with fire retardant material.In many areas a condo separation will require a subdivision plan, with engineering, blue prints and municipal/county review and approval. 

The next thing I would do is get the ducts cleaned out.

Taxes, IRS, other factors may still hold, and truth is, I don't trust the government office to provide full color on title.  

Unless you advertise it, I highly doubt any potential tenant will be able to tell the difference if the colors match!