The Simms Building is a historic high-rise office building in downtown Albuquerque, New Mexico. Designed by Flatow and Moore and completed in 1954, it was the city's first large-scale modernist building and is regarded as "Albuquerque’s best example of the International Style". The building was added to the New Mexico State Register of Cultural Properties in 1997 and the National Register of Historic Places in 1998, only 44 years after it was completed.
At in height, the 13-story building was the tallest in New Mexico until the Bank of New Mexico Building was completed across the street in 1961. Its design was inspired by the latest trends in modern architecture, especially the Lever House in New York City, with glass curtain walls and a combination of vertical and horizontal volumes. Sandstone blocks from the previous building on the site, the Commercial Club, were included in the exterior walls. The Simms Building also included an innovative radiant heating and cooling system with limited solar heating capabilities. The building received attention nationally as well as locally and helped catalyze the modern architecture movement in New Mexico. Simms initially planned to build a four- or five-story building, but when the architects showed him a more ambitious 12-story proposal he decided to go ahead with the project even though he felt it was a "crazy idea".
thumb|left|The Simms Building replaced the [[Richardsonian Romanesque Commercial Club, built in 1892. Some of the sandstone blocks were reused in the new building.]]
Flatow and Moore designed a bold International style tower, reflecting the latest trends in modern architecture; the style had only recently been adapted to highrise buildings like the Lake Shore Drive Apartments (1951) and United Nations Building (1952). Their design drew particular inspiration from the Lever House in New York City, especially the glass curtain walls and the way the tower seemed to float above its horizontal base.
Construction on the building started in September 1952 and was finished just over two years later in November 1954. The original construction cost was about $2 million. The general contractor was Lembke-Clough and King of Albuquerque. The new building was the tallest in New Mexico, surpassing the First National Bank Building, and boasted novel features like the first use of Thermopane insulating glass in the southwest and an innovative radiant panel heating and cooling system. The Simms Building attracted notice both locally and nationally—it was featured in its own issue of Albuquerque Progress, a monthly journal published by Albuquerque National Bank,
The building was sold to Sandia Savings and Loan Association in 1973 for $1.75 million and was renamed Sandia Savings Building, though the Simms name persisted in local usage. Sandia Savings made a number of changes to the building, enclosing the open-air promenade on the 13th floor for more office space, expanding the ground-level retail area, and adding a multilevel parking garage. The projects added about of space and cost $1.6 million.
The building was added to the New Mexico State Register of Cultural Properties in 1997