先生過身沒有平安紙, 屋契需要轉名, 兒子不打算加名入內, 但律師說還需要附加一分叫"家庭安排書" 才可以去房署申請, 想知道這份文件有什麼作用? 價錢方面大眾價是多少? 謝謝.?

Because there is no will, all estates of the deceased must be processed based on the law.

Because your son is eligible for the inheritance, he must release his entitlement before anything can be done.

This is the purpose of that document.

There is no set price on that document because this involves 2 legal transactions - probate and real estate transfer. This can be done by either processes.