Minnetonka-based Oppidan Investment Co.said Wednesday it will begin construction on two developments this week in the former Mason Motors Inc. site in downtown Excelsior.

Located at Water and George streets in the western Twin Cities suburb, the development includes a new Kowalski's Market -- the city's first grocery store in 30 years.

Kowalski's plans to renovate and expand the old Mason Motors building into a new 15,000-square-foot store. The store will focus on perishable items and foods to go, and will include a wine shop and a Starbucks coffee shop.

Oppidan, a national property development firm, is also developing a 20,000-square foot retail and office building that will face the new Kowalski's store. Oppidan is seeking retail tenants to occupy the first level of the building; the company itself will move its offices to the upper level.

Construction of the Kowalski's store and the new retail/office building is expected finish up by March 1, 2015.

"We are thrilled to be moving forward with development of the Mason Motors site and to fulfill our promise to the city of Excelsior to bring a grocer to its vibrant downtown district," said Joe Ryan, Oppidan's president said in a statement.

Oppidan purchased the Mason Motors building and adjacent property in 2012. Steele Fitness became the first tenant on the site in early 2013, and was followed by College Nannies + Tutors, SportClips and YogaFit. Thet 8,744-square foot building is now fully occupied.