Hi Luca LOMBARDI,
Yes, Private Residence Relief is available against the sale of overseas property that was you main residence for a period of time.
You can add a further 9 months to the period of main residence, when calculating your capital gains liability.
The rules apply to foreign property in the same was as UK property.
Please have a look at for more information:
Private Residence Relief (Self Assessment helpsheet HS283)
Thank you.