re: Buy or Rent

Hijack- My comopany will be relocating in a the next few years. I currently own my house and like owning my own home. When I move, I will have the resources to buy a house in this new location, but I would expect to get be promoted within the next 4-5 years which would require me to move out of state. I don't want to buy a house and have to sell within a year or two. I am married and we expect to have kids. I don't want to raise kids in an apartment, but at the same time an equivalent house to what we currently own would be pricey to rent. How much of a hit do you take having to turn a house that quickly assuming the housing market stays stagnant? Would I just be out closing costs, or am I overlooking some other detrimental effects such as credit score?