Use a seed. Use Virus' Text to Item code plus the hex code for the size house you had before you deleted it.
Code:
[ 1450 = House Size0 ]
[ 1550 = House Size1 ]
[ 1650 = House Size2 ]
[ 1750 = House Size3 ]
[ 1850 = House Size4 ]
[ 1950 = House Size5 ]
[ 1A50 = Big House (Mansion) ]
Or, just use a inventory modifier for your original house size. (U 1.0)
Code:
If you had house 0:
121d88fe 00001450
House 1:
121d88fe 00001550
House 2:
121d88fe 00001650
House 3:
121d88fe 00001750
House 4:
121d88fe 00001850
House 5:
121d88fe 00001950
House 6 (Mansion):
121d88fe 00001A50
Note that that will replace whatever you have in your first item slot and replace it with the seed for the size of the house you picked.