Whether you want to gift your house for property tax planning purposes depends on,
The relationship with the person you gifted the property to
Whether the home is your primary residence
For the gifts to be exempt from inheritance tax,
The property should be below the nil band rate
The property giver should survive more than 7 years after gifting
If you want to avoid capital gains property tax, gift your main home to your son.
The house should have been your primary residence since the time you owned it.
If you continue living there, you need to pay rent to your son.
If there is no mortgage on the house, your son won’t have to pay SDLT tax. Otherwise, they will be required to pay SDLT on the outstanding loan amount.