Treadwell Mansion Grand Opening Ceremony
Fri, May 15
|93 Pleasant St
You're on the list. Make it official. Treadwell Mansion opens its doors on May 15th, and we're saving a spot for you. Join us for a ribbon cutting, an intimate open house, and cocktails on the Skyline Rooftop.
Registration closes May 12, 2026, 5:00 PM
Time & Location
May 15, 2026, 3:00 PM – 5:00 PM
93 Pleasant St, 93 Pleasant St, Portsmouth, NH 03801, USA
About the event
Treadwell Mansion isn't just Portsmouth's newest boutique hotel, it's the city's most refined hospitality experience, full stop. Thirty-eight luxury suites inside one of Portsmouth's most storied historic properties, reimagined from the ground up where preservation meets uncompromising modern design. The type of attention Pleasant Street has always commanded.
On May 15th, we're opening our doors for the first time, and you're invited to be among the first to experience it.
The evening opens with a ribbon cutting ceremony, followed by an intimate open house where you'll move through the property, meet the minds behind Treadwell, and see firsthand what it looks like when historic architecture and cutting-edge hospitality collide. The night culminates with a cocktail hour on our Skyline at Treadwell rooftop terrace.
All in person attendees will be entered to win a complimentary 2-night stay, 50% off a future booking, or an exclusive opportunity to host a private event…
Registration closes May 12, 2026, 5:00 PM