Allerton Mansion

allerton-house-300University of Illinois Allerton Mansion and Coach House

515 Old Timber Road

Monticello, IL 61856

Built: 1889

Original Architect: John Borie

Restoration Architect: Mary Brush, Brush Architects, LLC


Building History
The Allerton Estate was constructed in 1899, designed by John Borie, of Philadelphia, PA.  The House and extensive gardens were donated to the University of Illinois at Urbana-Champaign in 1946 for use as a cultural institution.  The extensive natural area within the park was listed as a National Natural Landmark in 1970, and the estate including the buildings and grounds were listed on the National Register of Historic Places in 2007.

Preservation and Building Pathology Challenges
The original slate roof is a requires replacement.  The monumental masonry chimneys are also in need of extensive repair.  Due to building geometry, access is a key strategy for project. For the effort of getting onto the roof, the work scope includes the the logical grouping of masonry repairs, fascia restoration, window, and cupola repairs.

Design Solution
The slate roofs, low slope roofs, chimneys, and cupola  on the building have been designed by Brush Architects for repair, replacement and restoration for 2014.  The strategic challenge of the project is that the building and grounds are very popular for public and private gatherings. The construction schedule and budget is tightly defined, and with minimized disruption to the continuous operation of the estate.   The design challenge is a cost effective and sustainable solution to the restoration of the historic fabric.  A materials reuse plan is underway for brick and slate components that are not re-installed on the building will be salvaged on the property as part of the Estate’s farming component.