【案例】王律师,您好!向您咨询个问题。我家里有新中国成立前中央政府发的老地契,但土地房产所有权人是父亲。1987年土地清查时,经确定该宗地为农民集体所有,但没有对土地使用权人进行登记发证。现在,我父亲(房屋所有权人)已去世,我们(房屋所有权的子女)都是城镇户口,一直在此房居住。请问,我们是否能继承该宗土地及房产?家里所有的老地契是否还有效?×× [Case] ​​Wang lawyer, Hello! Ask you a question. My family owned an old leasehold issued by the Central Government before the founding of New China, but the owner of the land is the father. When the land was cleared in 1987, it was determined that the land was collectively owned by peasants but registration and certification of land use rights were not conducted. Now, my father (the owner of the house) has died, and we (the children of the house) are all urban residents who have been living there. Excuse me, can we inherit the land and the property? Are all the old deeds of the family still valid? ×