Drywall Annoyance

[Benjamin Mueller]

So part of my business plan was to buy simple houses. I one floor, no basement smallish houses 700 to 1100 square feet. These are generally 2 bedroom. So this has led me to 5l6 great houses albeit they are all exactly or very close to the same exact layout. They were all built between 1950 and 1960ish.  One little problem I keep encountering is the drywall when I have to put a patch piece of drywall in the original drywall is less the a 1/2 inch but more than the 3/8. So do I just use 3/8 and add some drywall patch a couple times til it's the same width or is there any easier way I haven't  come to realize yet? Generally it is only a small door hole from door lock or something as a plant holder screw etc. Anyone else have this problem and/or annoyance?