we had a gas hot water heater, big name brand with a six year warranty go out at about 6.5 years.

Without a valid lease, the tenants are squatters. 

It appears that NYCHA is now requiring valid comparables from non Sec-8 properties to approve rent increases.Hence, my current dilemma.

The letter stated he was obligated to tender a defense for the buyers due to the statutory warranty deed and to contact the office immediately.We contacted an attorney on his behalf and he sent off a letter to try to figure out what next steps would be.

Currently my portfolio is a single family residence in Denver CO and I’m planning on using a HELOC against it as a bridge loan for some of the downpayment and renovation costs.I’ve been trying to build some models on Google sheets for deal analysis to assess deal validity and candidly I think it can be done better.  

No, it was a "warranty deed" with the 4 names listed as buyers. 

I hear your concerns, and they are valid from a risk management perspective.

Splitting the difference is a perfectly valid middle ground too: maybe add a few hundred extra each month, build equity faster, but still keep cash free for opportunities.

I’m working on a potential tool for real estate investors and I need your blunt, honest feedback. I’m not selling anything, and this isn't a launch—I'm just trying to learn and build something that actually solves rea...

IDK what a "validated seller" means but I'll read between the lines and assume its some 85+ year old dude that built 1 or both of the buildings, likely didn't pull permits, and likely has code issues to resell as a true residential property never mind to your comment the changing in area and zoning.If you were going to take it on you'd want to understand the current zoning, current residential terms (is there a lease in the homes?)