The two impressive buildings of the castle's neo-Baroque Stables and the modernistic with classical elements Carriage House, although they form a separate hippy complex, are part of the Łańcut Potocki residence. They were erected at the turn of the 19th century according to the design of French architect Amanda Bauque and surrounded by a specially established "horseriding park." The furnishings for the stables, scrub and saddle room were ordered from the Viennese firm of R.Ph.Waagner.

The stables have a preserved original section for riding horses, as well as a Gala Scrub Room and Hall, where horse vehicles belonging to the Museum's Vehicle Collection are set up. In fact, the Museum in Lancut has two separate collections of horse-drawn vehicles: a historical one related to the Potocki family's residence with 55 vehicles, and a museum collection, gathered after World War II and still open today with nearly 80 vehicles.

The Łańcut Carriage House has a huge, glass-roofed Harnessing Hall, two on its sides, the Yellow and Black Carriage Houses, and the Scrub Shop, located on the axis. The walls of the Hall are decorated, with a collection of exotic trophies brought back in 1924 from the safari of the year by the last owner, as well as several European trophies. Vehicles from the Museum's Collection also stand here. On display in the scrub are the hamster and scrub harnesses of the trip, manufactured in Paris by the Hermes and Duprey companies and in Vienna at Schleuchter and Nideltz.

The most valuable movables collected in the Castle Carriage House is a priceless collection of horse-drawn vehicles inherited from the Potocki family. These vehicles are luxurious, of various types and varied purpose, coming from the most renowned Viennese, London and Parisian companies such as Marius, Lohner, Labourdette and Rotchild, among others. They stand in two carriage houses, separately the representative vehicles, separately the vehicles used in the estate, in the same places as under the owners. Although not repaired but only undergoing conservative maintenance, and despite being more than a century old, they are preserved in excellent and original condition. This is the only such magnate's carriage house in the world where, next to the historic main residence turned into a museum, there is a hippy complex with a carriage house, in addition to such an opulent one, which houses the vehicles used in the residence.