Anyone planning permanent birth control after this baby?

Meg
My husband and I are currently expecting #3 and both agree this is our last. It's very bittersweet to go through this knowing well be finished with this phase of life but I'm ready to move on. He plans to get a vasectomy but I'm not sure when he should do it. We're thinking maybe when baby turns 1? 
Is anyone else planning to do permanent birth control after this baby? If so, when will you or SO go in for procedure?