Basement waterproofing done right the first time.

Backed by 13 patented products and a team of industry experts.

Currently booking installs 17 days out.


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Proudly servicing New Hampshire,
Maine, and Massachusetts

603 Basement Solutions is the #1 basement waterproofing and crawlspace services company in NH. Our installation team has successfully completed over 300 Waterproofing and crawlspace jobs. We prioritize quality over quantity and make sure every customer is heard and responded too. If you are looking for a team that isn't going to treat you like another number, we are just a phone call away. Call us for any of the following services, our team is qualified, insured, and eager to work with you.


Water in your basement can lead to major repair costs, ask us about our forever dry system.


Finishing your basement is a great way to increase the value of your home.


An unhealthy Crawl Space can cause your family to get sick and will rot your house from the inside out. It's best to not leave them unchecked.


Spray foam insulation is the most reliable and cost efficient way to increase the energy rating and health of your home.


Foundation problems can affect the safety, value, and appearance of your home.

Created to change

the way contracting

is done.

Working With

603 basement solutions:

We provide a white glove experience for a price 10-15% under our competition. We are able to do that because we built our company with automation in mind. The majority of our operations are done with software instead of humans which allows us to provide our premium services for less than other bloated companies in our industry.

OVER 300

successful jobs


Patented Products


Google Reviews

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Forever Dry System -

100% guaranteed to
be dry for life.

The 603 Forever Dry system consists of 1 of our 6 patented drainage systems, the appropriate size sump pumps, vapor barrier on the walls and a dehumidifier. With this system we 100% guarantee you stay dry or we come back free of charge. Also if you plan to sell your home within your lifetime, this warranty is transferable to the next homeowner which will help you sell for more money! Who doesn't love that?