DuPont-Guest Estate

The DuPont-Guest Estate is a mansion in Brookville, New York, with red brick walls, white marble accents, and limestone trim across two main stories. The roof features dark slate shingles and the building follows Georgian proportions with balanced windows and a traditional gabled design.

The estate was built between 1916 and 1918 for Alicia Heyward du Pont and represents the architectural style of that decade. It later passed to Frederick Guest, who renamed it and gave it fresh purpose in the following years.

The name Templeton comes from Frederick Guest, who took over the property in the 1920s and gave it a new identity. The design shows Georgian features with red brick and white trim that reflect the tastes of that era.

The property now operates as part of the New York Institute of Technology's Old Westbury campus and serves multiple purposes. Visitors should arrange visits in advance through proper channels to understand current access and availability.

The building was designed by the well-known architectural firm Carrere and Hastings, who shaped other significant American buildings. The interior design came from Charles of London, a specialist in high-end residential spaces.

Location: New York

Inception: 1918

Architects: Carrère and Hastings

Architectural style: Georgian architecture, Georgian Revival architecture

Website: https://nyit.edu/deseversky

GPS coordinates: 40.80897,-73.61479

Latest update: December 10, 2025 16:30