R.H.
We moved from an apartment to a house when my son was just under 3. Have your toddler visit the new house with you several times and get excited about his/her new room.
We moved to my mom's house for a week while the move itself was happening. My son is used to being at her house and we didn't want him tripping over boxes etc. So he only came into the new house once most of the mess was out of the way and things were 'babyproofed'. (This is easier with a 3 year old than an 17 month old).
Good luck moving!