Please help!! What if I'm the one creating the comps in a neighborhood?

[Josh P.]

I'm about to purchase a multi-family property about 3 blocks down from one I already own. The price I'm paying for it will no doubt create a decent comp amount relative to what I now owe on the first multi family which I'm about to do a cash out refi on. My question is, will it matter that I created the comp myself when the appraiser determines what my first property is worth for the refi? or is a comp a comp?