PARAMUS — The Westfield Garden State Plaza plans to complete the first part of a $150 million remodel by the holiday shopping season.

The mall plans to open a five-level parking deck by November, with valet parking and a park assist system that shows drivers available spots, Lisa Herrmann-Srednicki, a spokeswoman for the mall, said.

The new deck replaces a four-level deck. While the parking garage is under construction, Garden State Plaza has added valet locations and cut valet prices in half on Saturdays at two locations.

The second phase of the project will expand the retail area of the mall by 55,000 square feet, enough for about 20 new shops. Garden State Plaza plans to release a list of new retailers in the near future, Herrmann-Srednicki said.

The new section of the mall should finish in March 2014, Herrmann-Srednicki said.