If you did a full repipe and gutted the entire property then I assume (in all that means) that there were permits pulled and this should have been caught when the inspector did their rough in walk through or atleast the final occupancy inspection. 

Insurance and LicensesThe Subcontractor agrees to maintain:General liability insurance of at least $[Insert Amount].Worker’s compensation insurance (if applicable).All necessary licenses and permits required by law.6.

I'm an Architect and MRED Grad and have entitled and permitted over 200 units across Bay Area and Norther California, ask me anything about SB9 or ADU design / permitting

https://ecode360.com/15245641#15245642 seems like condo conversions is not permitted in Hoboken but curious what's the result of your case. 

The owner can designate a host who shall be responsible, and authorized, to act on the owner's behalf to promptly remedy any violation of these standards or the permit.

$2.5B New Center by Henry Ford Health, Pistons owner and Michigan State Universityhttps://www.clickondetroit.com/news/local/2023/02/08/incredible-investment-in-our-city-25b-detroit-neighborhood-redevelopment-to-begin-in-2024/$1.5B Investment, 12,000 temp jobs, 6,000 New Jobs: District Detroit Developmenthttps://www.detroitnews.com/story/business/2022/11/15/district-detroit-1-5b-development-to-include-housing-retail-hotels/69649853007/$1.4B Total as Hotel Added to Hudson Sitehttps://www.detroitnews.com/story/business/2023/11/02/hudsons-site-hotel-plans-move-ahead-as-city-issues-permit/71426631007/$439M Gilbert Foundation investment in Detroithttps://www.henryfordmsu.org/news/september-2023/gilbert-family-foundation-announces-nick-gilbert-neurofibromatosis-research-institute$400M Investment, 517 New Jobs: Norway’s Nel Hydronhttps://businessfacilities.com/nel-hydrogen-will-build-400m-gigafactory-in-southeast-michigan#:~:text=In%20Southeast%20Michigan-,Nel%20Hydrogen%20Will%20Build%20%24400M%20Gigafactory%20In%20Southeast%20Michigan,green%20hydrogen%20using%20electrolyzer%20technology.$300M Huntington Place Renovations & New Detroit Hotel https://www.crainsdetroit.com/real-estate/huntington-place-renovations-new-hotel-deal-reached$200M Chase Investment in Detroithttps://www.axios.com/2023/09/28/detroit-rebound-jp-morgan-investment$44M Investment, 237 New Jobs: Bollinger Motorshttps://michauto.org/bollinger-motors-plans-44m-metro-detroit-investment/$21.5M Investment for Detroit west side Dexter Neighborhoodhttps://www.clickondetroit.com/news/local/2023/11/01/neighborhood-on-detroits-west-side-receives-more-than-215m-in-investments/$20.6M Investment, 186 New Jobs: BorgWarnerhttps://www.crainsdetroit.com/auto-suppliers/borgwarner-invest-206-million-create-186-jobs$11M, 200 New Jobs: Volkswagen Scout Brand Investment in Detroithttps://www.teslarati.com/volkswagen-scout-11-million-detroit-investment/New Detroit Developments to Be Excited Abouthttps://www.metrotimes.com/detroit/15-new-detroit-developments-to-be-excited-about-photos/Slideshow/32734721/327353923 International Companies Choose Detroithttps://www.detroitregionalpartnership.com/international-investment-comes-to-detroit-region/6 New Residential Developments in Detroithttps://detroitisit.com/6-new-residential-developments-in-detroit-to-know-about/Contact us with any questions you have.

Duplex have different zoning that may permit additional units.

Some towns require a residential parking permit (sometimes on specific streets only within that same town) - you need to know what those requirements are and how feasible it will be.

Does that mean I'm all set and can break it up in to separate units, or do I need to get a permit or rezone or other things?

.- Tell them they have to provide documentation of the animals service / emotional support (as allowed by your local ordinances), and that they have to provide documentation that the animal is current with its inoculations, etc. as well as its local license before you'll permit the animal in the unit.- Tell them they'll have to provide you with a copy of their renter's insurance naming you as additional named insured, with a minimum of (I use $300,000) liability insurance, also before they move into the unit.It's not perfect, but it's a start toward a tenant transparency.