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Tunis Trimmer House

Tunis Trimmer House

21 West Mill Road, Long Valley, New Jersey 07853

This house is believed to be one of the earliest stone homes in Washington Township, dating to around 1750.

The property was originally owned by Tunis (Anthony) Trimmer, who purchased more than 300 acres for £150 (about $400 at the time) to establish a farm. Early evidence suggests that the home’s first living quarters were located in what is now the basement, where a large stone cooking fireplace still exists.

Trimmer likely occupied this lower level until his death in 1754. His will named his wife, Elizabeth, and their children, Paul, Mary, and Anthony. By 1759, the property had been acquired by John Hager. Over the years, ownership passed through several families—primarily the Hagers, Swackhammers, and Welshes—each contributing to the home’s expansion and evolution.

The house retains many original 18th-century features, including deep-set, multi-paned windows, all of which have been carefully restored. Wide-board pumpkin pine and oak flooring extends throughout the first and second floors, reflecting early construction techniques. The deep window ledges, once practical design elements, now display collections belonging to the current owners.

Architectural changes over time reflect shifting styles and needs. During the Greek Revival period of the early 19th century, a portico was added - of which only the porch remains today. Interior details from this era are in the former parlor (now the dining room), including its mantel and decorative trim. Later, in the Victorian period, front and rear dormers were added, along with distinctive Greek key dentil molding. A rear clapboard addition, likely built during this time, includes a screened porch, bathroom, and laundry space.

To the left of the house lies a narrow wooded parcel that was once the site of a Presbyterian church. In 1832, a new church was constructed there on land donated by members of the Hager and Swackhammer families. That building was destroyed by a fire in 1954.

Today, the house stands as a clear example of how early structures evolved over time, with successive owners adding features that reflect changing architectural styles from the 18th through the 19th centuries.

Washington Township Historical Society Museum
Tunis Trimmer House, Historic Image.

Early Village Building

South Branch Raritan River Ford

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