I have had 2 home births, with toddlers/pre-schoolers in the house, and both have been daytme labours.
For the first (2nd child) ds was 21 mths, so was woken at his normal time, had breakfast in front of the TV, big treat, but the pool was set up in dining room by then. Then the dh took him off to a friends, who returned him a couple of hours after the event.
For the second HB, ds now almost 4, dd just 2. Both were told that they were going to meet 'our baby' soon, as my labour started midday, and although ds kinda understood, he was more excited about going to visit the friends who were having the both of them. they just carried on doing their thing mostly in the garden, as last week wasn't too cold, and watched the pool go up with interest, then off they went when the mw turned up, both more excited by the promise of a bath fizzer that night. Dh collected them at 9.30 that night, dd went straight to bed, ds met our baby, had his bath and also went to bed, with no probs.
I recommend having several friends who dc could be sent to locally if poss, you are able to relax and get on with it if you know they are safe and well attended to. HTH and good luck