If a house was constructed over many years, what days is used for the age of the house? Cement slab and runners for pier and beam was poured in 1982. Brick was put on in 1995 (which is when construction was actually finished.) We moved in during the year of 1989 so all of the walls, floor, electric, and plumbing were complete in 1989. What year do you list for the year the house built?