After 10 days with work completely halted, construction of the Sarjeant Gallery redevelopment is slowly getting back into full swing.
At alert level 2 contractors must maintain social distancing, which can slow productivity.
Sarjeant Gallery project director Gaye Batty said work restarted at level 3 and planning well ahead was now a key aspect of the project.
"Pre-ordering of timber and other building supplies is essential to ensure no interruption and we are even more focused on forward planning and procurement of long-lead-time items, some of which come from overseas.
"It's too early to say the medium- to longer-term effects on the total programme."
Builders were making progress on work inside the existing Sarjeant building.