About Twin State Basements

Vermont and New Hampshire's Leading Basement Contractors

Twin State Basements is your basement and crawl space waterproofing expert serving the residents of Vermont & Western New Hampshire!

We have continued to grow throughout the years by constantly studying the latest and best products available for basement waterproofing. When we've seen weaknesses in existing technology, we've built our own. Steve Andras, the company's founder holds several patents for innovative basement waterproofing technologies that are now used all over the world.

We are proud to have the most highly trained team in the business, including the most Certified Waterproofing Specialist (CWS) professionals of any company in the Northeast. You can also rest assured that you will not be oversold because our project managers are trained to provide solutions that best meet your needs and budget.

Reasons why Vermont & Western New Hampshire families choose Twin State Basements to fix their wet basement and foundation issues:

Stellar reputation in Vermont & Western New Hampshire – we are a company you can trust!
Locally owned and operated.
The most advanced waterproofing products available. Twin State Basements is part of the Grate Products Contractor Network who developed a patented basement drainage process called GrateDrain™.
Our 3 certified basement waterproofing specialists are available to address even the most challenging basement issues.

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Expertly trained project managers who design best-in-class systems and oversee every Twin State Basements project.

Fully insured - we carry general liability, truck insurance, and all our employees are covered by worker's compensation insurance.

Basement Health Association member

(CSRS) Certified Structural Repair Specialist on staff.

Contact Twin State Basements Services Today!

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“Twin State was recommended to me by a waterproofing company I used at another property, but do not service the area for this property. The Twin State owners came to my house, assessed the issues, and provided a very reasonable estimate. They promptly returned to complete the job which I am very happy with. They kept the basement clean during the work, were careful, the work was performed efficiently and done well, and they left the basement clean after they finished. They are courteous, conscientious, and have an excellent work ethic. After the work was completed, they continue to be available for questions and additional advice and suggestions. I highly recommend Twin State Basements.”

Andrew S.

Seabrook, NH

“I had radon in my basement, and their closed system was just what I was looking for! The crew was clean, quick, and detail oriented.”

Tim F.

Montpelier, VT

“Very dry basement for a very affordable price! Definitely recommend!”

Rick D.

Williamstown, VT

“They came and fixed a basement another company installed incorrectly. They did a great job and were flexible with finance options, knowing I couldn’t afford another big basement project!”

Marielle W.

Keene, NH