Generally speaking, you must be related to the proposed equity guarantor.
In most circumstances, it’s okay to have guarantor support from your mother, father, brother, sister, and sometimes even aunts, uncles and grandparents if the situation is suitable.
A guarantor should be in a sound financial position meaning they should have good equity and have comfortable means to meet their own commitments even if there were a default situation (which of course is usually very rare but possible).
We recommend even if the lender doesn’t that a guarantor should seek independent financial and legal advice to protect their own interests.