I wanted to get started in investing in multifamily real estate in 2022 to take advantage of low interest rates and rising rents.

Although only light "fixing"-- mostly cosmetic stuff. 

In light of the pending Hurricane, I am anticipating significant damage to at least 1 of the units - likely rendering it uninhabitable for a period of time. 

But we moved out the low rent tenants and after the rehab we filled all units with market rent tenants.

Any way to delay the official sale to keep taxes low while still maintaining a contract to buy? 

Additionally, a sewer line repair usually results in vacancy and lost rent--even more lost money.A new driveway can easily cost $5k on the low end, and plenty of properties in my area have $15-$25k+ driveways. 

All this fancy mumbo fha guideline gumbo means is that your projected market rents assuming all units, if it were rented Times 75% need to be greater than what your monthly payment is  (PITIA = principal/interest/taxes/insurance/assessments monthly), other wise FHA will not lend at that loan amount so common solutions to this when rents are too low in your local market are to put more money down payment which defeats the whole purpose of low 3.5% down FHA doesnt it?

Until someone from Norada can shed light on this it's not a place to put money. 

I'm sure others will have a different opinion, but I believe your OpExp margin of 66% is WAY too high 4% vacancy is too low.

Navigating NYC's zoning regulations can be complex @Jon Pflueger, especially in M1-2 districts, which are primarily designated for light manufacturing and commercial uses.