The interiors of Anhalt apartments feature amenities and design details that were uncommon in apartments of the time. Many Anhalt apartments featured built-in refrigerators, electric dish washers, wood-burning fireplaces, high ceilings, hand-carved woodwork, and double floors for soundproofing. Although individual apartments were not exceptionally large, many featured individualized floor plans and amenities more commonly found in single-family homes: upper and lower levels connected by curved interior staircases, private balconies, glazed tile work, and stained-glass window panes. The 25-unit Ten-O-Five apartment building, completed in 1930, was the first apartment building in Seattle to feature an underground parking garage.