Accessibility and restoration work at Weeks State Park give new life to a century-old summit estate.
PC Construction’s Special Projects Group recently completed accessibility and preservation improvements at Weeks State Park in Lancaster, New Hampshire – a nationally recognized historic site perched atop Mount Prospect with 360-degree views of the White Mountains, Vermont’s Green Mountains, and the upper Connecticut River Valley. The project balanced modern accessibility requirements with the care that a property on the National Register of Historic Places demands.
At the Main House, work included ADA and accessibility upgrades, drainage and water management enhancements, foundation repairs, and exterior restoration. The Carriage House received targeted repairs to improve structural stability and guard against ongoing water-related deterioration – a persistent challenge for historic masonry buildings in New England’s freeze-thaw climate.
The project’s location at the top of Mount Prospect added a logistical wrinkle: the access road closes for winter, compressing the available construction window. PC structured the work into two phases, with the bulk of construction completed between May and November 2025, and the final upgrades completed this summer.
The 438-acre Mount Prospect estate was originally built at the direction of John Wingate Weeks, U.S. congressman, senator, and Secretary of War under Presidents Harding and Coolidge. In 1941, his children gifted the property to the state of New Hampshire and, in 2023, it was listed on the United States Secretary of the Interior’s National Register of Historic Places.
On July 18, the completed project will be celebrated at an open house. Join us to usher in the next chapter of this remarkable historic site!
