Assuming construction started when the land was acquired in 1911, due to interruptions (for example World War I) the Old Parliament Building was not completed until 1927 some 16 years later.
For the New Parliament Building, a competition to design it started the construction process in 1978 and it was opened in 1988 some 10 years later.
2m
Construction started on the new Parliament House in 1981 and it was opened in 1988. It had been planned ever since Federation, and the old Parliament House was only intended as a temporary building.
4 to 5 months
7000000000000 CENTURIES
7000000000000 CENTURIES
It took 5 years to build.
10 years!
1 and a half years
it takes about 1-5
it took like 100 years
i have no idea so what evers
1 and a half years