In the 1880s, he began to construct buildings of which he was both the architect and investor in the project, sharing in the financial benefits. In 1882 he designed a luxury apartment building on Stadiongasse in Vienna, close to the Parliament and the city hall. The facade was inspired by the Renaissance, but the interior was designed to be highly practical, luxurious, and constructed with the highest quality materials available. The benefits of this building allowed him to build several more similar apartment buildings. It illustrated his doctrine of the connection between beauty and function. His next major project was the headquarters of the
Länderbank in Vienna. He won the design competition in 1882 and built it in 1883–84. It was built on a very irregular site, mostly at an angle to the street, which allowed him to be more creative. The five-story Renaissance facade gave little idea of the complexity of the building behind it, which had multiple diverging axes. The visitor passed through a circular vestibule, then turned at an angle into multi-storied semi-circular central hall with a glass skylight, where the banking function was located. He also used new materials, such as an enduit lisse, and much larger windows than were customary in the period, repeated the plan on each floor. He later described his approach to the building: "The demands for air and light, the desire to assure easy circulation and orientation inside the space, and especially the fact that the activities of a bank can develop on one direction or another, made it desirable to be able to easily transform the work spaces." He was to follow the same concepts twenty years later when he designed the Postal Savings Bank in Vienna. The following project, in 1886, was the first Villa Wagner, a country house he built for himself on the edge of the
Vienna woods. He called it his "Italian Dream", and it had neoclassical elements inspired by
Palladio. it was surrounded by a park carefully designed to complement the architecture. The principal facade had a double stairway ascending to a portico with a colonnade, which was the entrance to the grand salon. The porch was decorated curving wrought iron, statuary, and a coffered ceiling. At either end of the main villa were pergolas with open colonnades. On either side of the main stairway to the entrance he placed plaques in Latin concisely stating his philosophy On one side, "Without art and love, there is no life"; and on the other, "Necessity is the sole mistress of art." In 1895, he modified the house. One of the pergolas was transformed from a winter garden into a billiards room, illuminated by floral stained glass windows, one designed by the painter
Adolf Michael Boehm. The other pergola was made into his studio, also with colorful decorative windows. Two more of his buildings appeared on the boulevards of Vienna. The first, completed in 1887, was a six-story apartment building on Universitätsstrase, which had a rigorous vertical facade divided by ornamental
pilasters, divided horizontally by a very ornate wrought iron balcony on the first floor and a sculpted cornice beneath the roof, dividing the facade into three distinct parts. The second was the
Zum Anker building on Spiegelgasse, and the Graben, the historic boulevard in the heart of the city. This building, completed in 1894, combined apartments on the upper floors, and stores on the street level, bearing large display windows. On top was another glass structure, like a small temple, which contained a photography studio. It was another notable example of Wagner skillfully adapting the design of the building to its practical functions. Wagner always fought against the idea of historicism which helped Vienna of that time to sway over and come up to its notable architectural achievement, the Ringstrasse Boulevard. He had a chance to deliver a speech at Academy of Fine Arts in 1894, where he said that, "The realism of our time must penetrate the work of art." File:Stadiongasse 04.JPG|Stadiongasse Building, Vienna (1882) File:Otto Wagner Hohenstaufengasse 3 Kassensaal Panorama.JPG|Banking floor of the Länderbank, Hohenstaufengasse, Vienna (1882–1884) File:Penzing (Wien) - Otto-Wagner-Villa, Hüttelbergstraße 26 (1).JPG|First Wagner Villa (1886) == Urban planning and the Vienna
Stadtbahn (1894–1900) ==