The architect’s atlas · 1867–1959

Frank Lloyd Wright’s works atlas

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Built work

Andrew T. Porter House (Tan-Y-Deri)

Architect
Frank Lloyd Wright
Place
Spring Green, Wisconsin, United States
Construction
1907–08
Design / archive date
1907
Catalogue reference
FLWFA 0709 / S.134

Architecture & history

Tan-y-Deri, also known as the Andrew T. Porter Home and the Jane and Andrew Porter Home, is a house in Wyoming, Iowa County, Wisconsin, United States. It was designed in 1907 by the architect Frank Lloyd Wright for his sister Jane Porter (1869–1953) and her family. Jane, her husband Andrew Porter (1858–1948), and their children James (1901–1912) and Anna (1905–1934) moved into the house by late January 1908. The home stands in a valley that was originally settled by the Lloyd Joneses, who were the family of Wright and his sister's mother. The Lloyd Joneses were originally from Wales and, as a result of this heritage, Wright chose a Welsh name for the Porter home: "tan-y-deri" is Welsh for "under the oaks".

Tan-y-Deri is on Wright's Taliesin estate, which was declared a National Historic Landmark in 1976. It is one of five Wright-designed buildings on the estate, of which two can be seen from Tan-y-Deri: the Romeo and Juliet Windmill, and the main Taliesin house. The other two buildings on the estate are the Hillside Home School II and Midway Barn, the latter being Wright's farming facility.

Reference overview adapted from Wikipedia contributors under CC BY-SA 4.0. Formatting adapted for Arch Moods.

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Entries include buildings, alterations, project variants and unbuilt designs—not a count of surviving buildings. Design dates and construction dates are shown separately.

The works.

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Built work · designed 1925

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Unity Chapel

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This atlas combines the Avery architectural drawing inventory with a published building index. Individual profiles link to their references. An archive record does not, on its own, establish that a building was constructed. Unknown construction dates and missing photographs are marked explicitly; unbuilt schemes are never presented as completed buildings.

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Research edition: 30 October 2026. Building access and visiting arrangements can change; consult the relevant site before planning a visit.

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