appraisal after forced appreciation?

[Courtney Brittain]

Rookie investor question - When discussing small multi-family buy and hold properties, I read/hear about forcing a 10% appreciation in the first year so the equity/appreciation grows based on that increased value in subsequent years.  My question is, after forcing the appreciation do you get an appraisal and is that "filed" somewhere?  Or how does the county know to appraise your property based on the new improvements?  

Thanks for the help!