25% return possible?

[Reese Donohue]

say you bought a house for 100k with a 25% down payment of 25k.

if your cash on cash return was 10% or 2,500

if the house appreciated the annual average of 3%, thats 3,000 in added equity

if your loan was paid down 1750 in the first year thats an extra 1750 in added equity

it all adds to 7250 on your total investment of 25k, that comes out to 29% total return the first year total. You dont hear people talk about returns that high often. But you do hear people talk about a 10% cash on cash return. 3% appreciation is average, and the loan paydown is just paying one year worth of your 30 year mortgage. Can these numbers be realistic?