They are stating that because the address I want to list on Airbnb is not my primary residence, I only qualify for a non-primary residence STR permit, which restricts rentals to a maximum of 90 days per calendar year.Has anyone else encountered this issue before?

NYC is the obvious central point but the restrictions seem to be covering northern NJ and most of Westchester now.

I'd also pull the records at the registry of deeds to see if any restrictions are attached to the unit. 

Where these restrictions exist, they are recorded on the title.

You need multiple exit strategies because the condo association can restrict or outright eliminate your ability to rent out a condo regardless of whether its an LTR, MTR, or STR.

Lastly, don't overlook any local regulations or HOA restrictions if any.

For example, in WA, a debt fund is a security and I have factors to think about when raising capital - 506c has less restrictions than 506b). 

(Other financing arrangements might be possible.)You can only obtain one home equity loan per year, even if you have fully paid off the prior home equity loan.Regulation of LendersTexas restricts who may lawfully issue a home equity loan.An unlicensed person is not permitted to make a home equity loan unless that individual is either related with the borrower to the second degree, or is the seller and is providing financing for the property.A home equity loan must be secured only by the home itself, and the lender may not attach the loan to any additional assets as collateral.

And speaking about retail, you also have other real world issues that can impact things: co-tenancy requirements, use restrictions, etc, that may not be an issue with the current tenant lineup, but can certainly impact your ability to fill vacancies or maintain occupancy as tenants roll.And to address what seem to be your follow-on questions for people: there is no exhaustive list.  

It's a commonly applied local overlay in the 'usual suspects' of States that have restrictive tenant protections, so its unfortunate that you thought you didn't have to accept it...technically you may not have been required to 'accept the voucher', but you have to allow them the opportunity to apply and then allow the housing office to decline the property.