Not uncommon. 

It’s not uncommon for parking to rent $100-150 per spot in class A/B.

HELOCs are more uncommon on investment properties, but I posted a long list of lenders who have done them in the past. 

They are supposed to be sealed, usually with color matching sealant but it's not uncommon to have "clear" sealant. 

it is not uncommon to see 0-2%.  

It is not completely uncommon, lots of investors do it.

It is not uncommon for higher net worth investors to pledge alternate collateral for a loan.

It's not uncommon to see shelters/rehab facilities in residential areas.If you're interested in places outside of Fitchburg, neighboring Leominster might be worth a look too.

You can also send Certified, Return Receipt Requested to get at least a signature acknowledging it was received.Having TWO HOA's is not at all uncommon, typically a much larger "regional" HOA that perhaps owns the streets and street lights, parks, etc., with a smaller HOA within it's boundaries for a single project of a square block or two of units, or individual high rises that were developed over a number of years.

Your VA loan will come down to your VA benefit use, 2 is pretty normal in lower dollar markets, 3 is pretty uncommon.