We have a multi family rental unit which uses oil for home/water heating.Our tenants are responsible for purchasing their own heating oil.We are trying to figure out a way to determine when/if our tenant is running out of fuel.Our maintenance person has communicated that one unit has repeatedly run out of fuel, creating an increase service cost on their boiler.I know there are WiFi options to meter usage.

Assuming you've already registered your home with ALE Solutions ?

Felt like I was home.  

I currently own 2 properties, and in the process of looking for my 3rd, which will be my primary home for my family and I.

Generally speaking, per the NYC Zoning regulations, a R4B is limited to a maximum of 2-family homes.

We ended up going the HELOC route on that property for a few reasons. 1) the interest at the time was only 5%, which although seemed high, didn't matter too much with our potential property showing a 18% ROI 2) we leveraged a second home loan with 10% down for that new property, so our HELOC withdrawal was relatively small compared to what would be needed for a traditional loan on a rental. 3) I dont think I will see the rates in the 2% again in my lifetime, so figured I should hold on to that "free money" instead of selling it. 

This scenario forecasts a potential 9.85% cash-on-cash return for an all-cash investment.Additionally, with a more extensive renovation, the property's resale value could surge above $200,000.This is just one example, but the above data showcases its potential as an excellent market for single-family home investments.

Any tips if I need 10k to purchase cash or suggestions for loans?

So once again it’s off-line and I have guest that just checked in and I’m keeping my fingers crossed that they can hang in there until I get home in two days.

I was looking to buy a home from him last year but he blasted me in an email for looking him up on @biggerpockets  in this post, so I stopped communication.