Layered walls have recently been used in building construction with a ventilated facade cladding of ceramic bricks. The width of the outer brick veneer layer is 120 mm, used more often. The tendency to thin the width of veneer layer walls is observed in the production to reduce energy consumption and CO2 emissions. Prefabricated thin ceramic brick façade veneer layer panes are also used. When installing the veneer layer of small-width ceramic bricks, technological problems arise on the construction site. The main issues of these façade veneer panels are insufficient bending and shear strength under loads during exploitation and installation (lifting and transportation). Precompression can help overcome these issues. The prototype of a prestressed thin ceramic brick veneer layer was created during this research. To produce the prefabricated veneer panel, thin hollow bricks (width 51 mm) and general purpose mortar were used (bed joint thickness 10–12 mm). Vertical reinforcement was prestressed when the masonry reached the required strength. Experimental research revealed that precompression of the veneer layer increased the bending moment of the first crack formation by up to 2 times and stiffness by up to 2.5 times compared to samples without precompression.