Basement Authorities in ME & NH

We’re Northern NH and Western Maine’s premier specialists in basement waterproofing and structural foundation repair, we even offer 24hr emergency services including clean up and disaster restoration serving Carroll, Coos and Grafton counties in NH and Oxford, Cumberland (including Portland) and York in Maine. We’ll diagnose your situation and fix the problems, whether it’s foundation wall cracks, a faulty sump pump, leaking window wells, musty, moldy, muddy crawl spaces, high humidity, foundation settling, wet, damp basements and more.

See why we are a clear cut above the rest

Basement Authorities NH may not be the largest but we are superior in many ways. We are not a franchise but are a select group of nationally handpicked companies that have a history of Honest, Fair and Ethical business practices. This, backed by billion dollar purchasing power, the proper training, and a national network of dealer contractors gives us the edge to compete with those large cookie cutter businesses. We bring you the most up to date, tried and true solutions for any basement or structural foundation problem you may have. We are not required to buy or sell you any product, by any company. Instead we research, purchase and install only the best on the market. Our state of the art economical systems will keep you dry and safe GUARANTEED!

Free residential inspection and consultation.

Contact our office for details.

Rest assured that when we are finished you will not have to call us back unless you want to invite us to dinner!

What our customers are saying about us

I was very pleased with the work you did to repair the leak in my basement. As you know, it leaked from the day my house was built twelve years ago.
The foundation drain at the bottom of the wall was a success. Not a drop of water since the work was completed and we had plenty of rain last summer and fall.
A very clean, professional and timely job.

Ed (Retired Engineer) North Conway NH

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