However, if you intend to work with a hard money lender or utilize a short-term loan product, you're on the clock for repayment, which can be stressful if things go sideways. 

Wouldn't hurt to look in to both to give yourself the best chance at finding the best loan product. 

Here is a video that runs down the basics - https://s-media.nyc.gov/agencies/specialenforcement/01-Legal...There is also a prohibited building list - https://www.nyc.gov/site/specialenforcement/registration-law...Here are some more info overall - https://www.nyc.gov/site/specialenforcement/registration-law..All of this makes STRs in the city pretty tough but it certainly not impossible.

Hello,I am a Software Engineer and a Real Estate Investor working on a tech product for the real estate mortgage brokers.

I can assure you that the more you learn regarding these products, the easier it is to help all of your clients.

@Dennis KnappJ Scotts book on estimating rehab costs is a great start. https://store.biggerpockets.com/products/the-book-on-estimat...Here is a "general" rule of thumb for my market in Jacksonville, FL.

Learn everything about real estate like it's your favorite video game and show your wife how passionate you are and how much you believe in real estate.

And there is a lot of superior options out there in both product and methodology. 

That’s less about the numbers and more about developing a niche and understanding your product.

@Paul Moore and others have done a great job taking fees down in the product.