Praise be to Allah.
Firstly:
Fathers are obliged to treat their children fairly in terms
of giving gifts; it is haraam for a father to show preference to one of his
children in any way. Based on that, it would not be permissible to fulfil
the promise that he made to you and your brother if he were alive. As he has
died, what is required is to divide the estate according to the shares
stipulated in sharee‘ah. The scholars of the Standing Committee were asked:
Is it permissible for a father to register a piece of
farmland in the name of one of his sons and ignore the rest of his children?
My father registered a piece of farmland in my name and ignored my sister
and little brother. Should I sponsor these children or ignore them?
They replied:
The father is obliged to treat his children equally in terms
of giving gifts, in accordance with the shar‘i guidelines on inheritance. It
is not permissible for him to single out some of them and not others,
because the Prophet (blessings and peace of Allah be upon him) forbade that.
It was narrated from an-Nu‘maan ibn Basheer (may Allah be pleased with him)
that his father brought him to the Messenger of Allah (blessings and peace
of Allah be upon him) and said: I have given this son of mine a slave I
owned. He said: “Have you given a similar gift to all your children?” He
said: No. He said: “Then take it back.” Agreed upon.
Based on that: your father must be fair in the gifts that he
has given to some of his children by giving each of his children something
like that which he gave to the one mentioned, or else he should take back
the gift from him. As your father has died, you should divide the estate
between you and the rest of the heirs in accordance with the shar‘i ruling.
Shaykh ‘Abd al-‘Azeez ibn Baaz, Shaykh ‘Abdullah ibn Ghadyaan. Shaykh Saalih
al-Fawzaan, Shaykh ‘Abd al-‘Azeez Aal ash-Shaykh, Shaykh Bakr Abu Zayd
End quote from Fataawa al-Lajnah ad-Daa’imah, 16/216
For more information, please see question no.
114659
Secondly:
With regard to the apartment that you built with your own
money, it belongs to you and the heirs have no right to it. When the estate
is divided, this apartment should be evaluated on the basis that it is a
separate apartment, with no share of the value of the land, and is your
property. In other words, experts should work out the value of this
structure without including any part of the value of the land on which it is
built.
For more information, please see the answer to question no.
131901
And Allah knows best.