[1] It has a three-bay Classical Revival front covered with glazed terra cotta blocks, of a 50 by 140 feet (15 m × 43 m) footprint.

The two-story commercial block building has a flat roof and brick party and rear walls.

The Rialto is one of the last main street theatres in northern Colorado with any remaining architectural integrity.

The marquee replacement and the most recent alterations have compromised the Rialto visually, but the building still retains a high degree of integrity of location, setting and association...."[2] Modifications to the theater have tended to contribute to, rather than detract from, its architectural character.

[3] It is also a contributing building in the Downtown Loveland Historic District, which was added to the National Register in 2015.