St.  Joseph Courthouse

South Bend, Indiana

In February 2026, a comprehensive restoration and conservation campaign commenced within the historic St. Joseph County Courthouse. Originally constructed in 1896 and listed on the National Register of Historic Places, the courthouse remains one of Indiana’s most architecturally significant civic landmarks. The initial scope of work included:

• Repair and restoration of damaged ornamental plaster throughout the rotunda and select courtroom ceilings.
• Conservation of two historic lunette murals and four rondel murals.
• Infill of decorative paint losses within mural surrounds, ornamental plaster, and dome features.
• Limited plaster and decorative paint restoration within the second-floor historic courtrooms.
• Historic paint analysis and development of finish mockups to determine the building’s original decorative appearance.

As restoration progressed, extensive investigation revealed a remarkably intact decorative scheme concealed beneath generations of overpaint and darkened varnish. These discoveries ultimately led to an expanded scope of work that reinstated significant portions of the courthouse’s original decorative program.

EXISTING CONDITIONS ASSESMENT

Initial investigation revealed that much of the courthouse’s original decorative painting survived beneath later interventions. While previous repair campaigns had introduced varying levels of alteration, significant portions of the original faux bois finishes, decorative glazing systems, and ornamental color accents remained intact. The most significant visual detractors included:

• Water-related plaster deterioration.
• Extensive overpainting campaigns.
• Oxidized metallic finishes.
• Darkened varnish layers that obscured original color relationships.
• Previous repairs that did not accurately replicate original profiles or decorative finishes.

Notably, examination of the courtroom ceilings revealed original faux bois finishes enhanced with red and green accent colors, as well as rare aluminum leaf embellishments. The discovery of these surviving finishes provided critical evidence for understanding the building’s original decorative intent and informed subsequent restoration decisions.

HISTORIC INVESTIGATION & FINISH ANALYSIS

Concurrent with stabilization efforts, a minimally invasive finish investigation was conducted throughout the rotunda, courtroom ceilings, and associated architectural features. Microscopic examination, stratigraphic analysis, and selective paint exposures identified an original decorative scheme consisting of layered faux bois glazing systems, accent colors, and highly detailed ornamental panel decoration. Investigation further revealed an elaborate hand-painted scrollwork program within the upper rotunda dome panels that had been concealed beneath multiple generations of paint.

Based on these findings, a series of full-scale finish mockups were developed to illustrate the courthouse’s original appearance. These mockups recreated historic colors, glazing techniques, ornamental detailing, and decorative panel treatments while balancing historical accuracy with the visual context of adjacent aged finishes. The success of these mockups prompted an expansion of the original contract, authorizing restoration of the rotunda cornice, vaulted corridors, and additional decorative elements beyond the initial scope.

ROTUNDA RESTORATION

The rotunda represented the most transformative portion of the project. Following scaffold installation and protection of adjacent historic finishes, extensive plaster stabilization and decorative restoration commenced. Significant water-related deterioration, particularly within the southwest quadrant, required replacement of lost ornamental elements, recreation of decorative moldings, and stabilization of damaged substrates.

Historic finish analysis revealed that the rotunda originally featured a sophisticated decorative scheme far richer than its present appearance suggested. Beneath multiple generations of overpaint, original faux bois finishes, accent colors, and highly detailed ornamental panel decorations remained largely intact.

One of the most significant discoveries was an elaborate scrollwork and cartouche design concealed within the upper dome panels. Paint exposures revealed a complex composition incorporating layered colors, hand-painted highlights, object shadows, and cast shadows that demonstrated the exceptional craftsmanship of the original decorative program.

Following review of restoration mockups, the decision was made to reinstate the historic decorative scheme throughout the rotunda and adjoining vaulted spaces. Traditional decorative painting techniques, including glazing, stippling, pouncing, stenciling, and hand brushing, were employed to recreate the original appearance based on documented historic evidence. Faux bois finishes were reinstated throughout the ornamental framework, while the dome panels were recreated using historically accurate colors and application methods.

Following review of restoration mockups, the decision was made to reinstate the historic decorative scheme throughout the rotunda and adjoining vaulted spaces. Traditional decorative painting techniques, including glazing, stippling, pouncing, stenciling, and hand brushing, were employed to recreate the original appearance based on documented historic evidence. Faux bois finishes were reinstated throughout the ornamental framework, while the dome panels were recreated using historically accurate colors and application methods.

MURAL RESTORATION

The project included conservation treatment of two 1899 lunette murals depicting episodes from the travels of René-Robert Cavelier, Sieur de La Salle, as well as four rondel murals located throughout the rotunda. Conservation assessment determined that the murals remained structurally stable but were heavily obscured by accumulated dirt, aged varnish, and evidence of previous intervention campaigns.

The lunettes presented a particular challenge due to multiple generations of heavily discolored varnish that significantly darkened the imagery and obscured the artists’ original color palette. Extensive testing was undertaken to identify a safe and effective treatment methodology capable of removing the deteriorated varnish without disturbing the original paint layers. Following treatment, the murals revealed substantially greater color variation, depth, and legibility than had been visible for decades. Cleaning also exposed the quality of the original brushwork and restored visual clarity to important narrative elements within the compositions.

The four rondel murals required additional conservation measures. Previous cleaning campaigns, environmental deterioration, and localized paint loss had altered portions of the original appearance. The southwest rondel had previously been removed due to concerns regarding structural instability resulting from long-term water infiltration. After conservation treatment, stabilization, relining, and substrate preparation, the southwest rondel was successfully reinstalled using a reversible mounting system designed to ensure long-term preservation while maintaining future treatment accessibility.

Following cleaning and stabilization, losses throughout all mural surfaces were carefully inpainted using reversible conservation materials and protected with conservation-grade varnishes.

PROJECT OUTCOME

The project successfully uncovered, conserved, and reinstated key elements of the courthouse’s original decorative scheme. By stabilizing historic materials and restoring lost visual continuity throughout the interior, the work has enhanced both the architectural character and long-term preservation of the building.