Raze My Settlement Mod
MODMe too.One click of a button in a holotape - gone in sixty seconds! (Depending upon the power of your gaming rig.)
The "Add Basic Scrap (Sanctuary)" option can be run and added to any settlement (it's close to the amount of scrap Sanctuary should start with).
It requires F4SE, go check it out: MS Raze My Settlement - F4SE.