The American Indian Magnet School in St. Paul could add several additions to its building at 1075 E. Third St. to accommodate art and science programs, as well as new egress stairwells.

The St. Paul Public Schools received approval for major zoning variances on Monday from the city’s Board of Zoning Appeals.

The maximum building height allowed by zoning is 30 feet. The proposed height of the first addition is 38 feet 2 inches and the height of the second addition is 52 feet 1 inch.

Located in Dayton’s Bluff, the school serves students in pre-K through eighth grade.

Despite the zoning approvals, construction plans could yet be complicated by the St. Paul School District’s recent decision to overhaul its five-year plan for district-wide building improvements, which faced ballooning costs in its first three years.

Recent estimates for improvements at the American Indian Magnet School were $53.3 million, up from $23.1 million in 2016.