I don't know that you would want a water based fire suppression system in a kitchen.

When you get further into the process you want to start picking up the phone and talking to lenders and local banks to get an idea of their risk appetite.

There is a LOT available to buy in Westend, if you have the appetite for it. 

I tried them first, but it wasn't optimal and my banker never actually got back to me on if they had an appetite for it....We have a small Fix and Flip Line with them that we use, but with current rates, they're way more conservative and only funding 75% of purchase and 75% of rehab and their rates are in the 9s which is not too far off from what I'm getting with Kiavi on my Fix and Flip with a lot more red tape than Kiavi.  

That said, co-op investing may be the best option depending on your current living expenses in NYC, risk appetite, preference for location, etc.Co-ops are typically priced lower than Condos and certainly priced below neighboring SFRs. 

At only $31,000 per door, most lenders don't have an appetite for this because their note purchasers are not interested in the possibility of a reno, major property upgrades, essential a rehab budget that could easily triple in size from underestimation.Please let me know if you have any ideas.

Current appetite is...it depends.

@Will Ward - generally, outside of seller financing, the common types of debt available for MHPs are:Local & Regional Banks or Credit Unions - You can find out which banks have an appetite for mobile home parks by asking the MH/RV brokers in your area, networking through your state's manufactured housing association or other parks owners in your area like @Rachel H.noted above, or simply obtain list of the smaller banks in your area/region and call them to see if they have lent on parks in the past.

Personally, i don't think i'd be comfortable with that, but everyone's risk appetite is different. 

Different lenders have different appetites for HELOCs, some will make them on primary residences only, some will do first position while some will not (meaning on a paid off house).