There are a lot of thing with the name Mission Oak so assuming the Mission Oak referred to in the question is a bank, they are banking for residential and commercial people and business of California. They are lenders, make banking easier and help to create financial plans.

The priests at Mission Santa Clara typically slept in small, simple living quarters known as cells or cells located in the mission's residential wing. These cells were often attached to the mission's church or located in a nearby courtyard. They were basic structures with a bed, a small desk, and storage space for personal items.

Mission San Juan Bautista is a historic mission located in California. Currently, it is an active parish church and is home to a small number of priests, staff, and local community members who attend services and events at the mission. It does not serve as a residential community.

Residential is a singular and plural word if you mean residential lot. "I live on a residential lot." ; "There are a lot of residential lots."

Residential