Is This Really Happening? To Me?

At what point may I start to say "it's mine,"
About this house I put my offer on?
It's been accepted, that part went just fine.
Does that mean the conclusion is foregone?
The underwriter still could turn me down;
The plumber or electrician could say
No way is this OK, not in this town.
But, for that matter, it could blow away
Should a freak cyclone rip on through that street.
The cyclone is more likely, my pros say
(My Realtor and mortgage lady sweet).
They told me to switch over my accounts
And have a moving crew ready to pounce.