Auckland Council says it is investigating a "potential inconsistency" over the legalities of a 12m-high factory being built beside Hobsonville Primary School.
The council has responded after the Herald wrote about school principal Anne Leitch's shock and anger at Autex Industries, after it started building a new factory just metres from the rear of the school's boundary.
She wrote about the development in the school's latest newsletter, sent to parents about 10 days ago, stating she was "incredibly disappointed that Auckland Council approved consent without notification to the school".
"This communication is to inform you that once again the school has been ignored and disregarded as a place where an aesthetic environment is critical for our students."
The factory was to be built 2.7m from its boundary - less than the 3m minimum Leitch thought was imposed.