How much do foundation, basement or crawlspace waterproofing and encapsulation companies typically cost?
- Hollis, New Hampshire Average$1,682
- Typical Range$800 - $2,711
- Low End - High End$500 - $4,670
Septic Installs, Septic Repairs, Septic Pump Outs
"Tom Howe and his team did a tremendous job installing a new septic system in our home. Tom is a true professional and I would highly recommend him to anyone in the need of replacing there septic system."
Eric S. in September 2020

Building Site - Preparation and Clearing, Excavation - Major Grading or Resloping - For Business, Excavation - Major Grading or Resloping , and 7 more
"Tim was excellent to work with. He was quick to respond and quote. Tim handled all the details, coordinating with the Plumbers, Designers, and Permits. While installing the Septic system, he was also hired to do some grading of the property and install a foundation for a large addition. His quotes were fair, he stayed on budget, and his subcontractors were excellent. Most importantly he answered all of my concerns and questions throughout the job. I will definitely recommend his company."
91E4135F2A4CD56E7017BEEF39C157D53AF8922E5EC3B4A008AF41859E5B1BC7 1. in October 2025

Foundation Repair, Basement Waterproofing, Crawlspace Encapsulation , and 1 more
"I was impressed with his knowledge and professionalism. He installed a French drain system with a vapor barrier on the walls. He prepped the area to protect our belongings, made sure everything was cleaned up after the end of each day, and provided exceptional service and quality. I would highly recommend him!"
Heather S. in November 2022

Yard Maintenance, Yard Construction
"North Peak Landscape and Tree Service did a wonderful job with my Fall cleanup in my yard. Very nice to deal with, listened to what I requested and followed through. I am very pleased with the job they did. I will highly recommend them to others. Thank you! Hoping to have them back in the Spring to clean up after winter and do some landscaping work here too."
Tacy C. in November 2017

Excavation, Landscaping
"Highly recommend! Easy, timely, thorough and cost effective. Will definitely call on Ethan again for additional projects."
Dina D. in July 2024

Lawn care, Brick & Stone, Landscaping , and 8 more
"Rob did a fantastic job building a platform and stairs with a railing with granite. He is amazing at what he does. I am very pleased with the results."
Emily S. in December 2020
Minor Grading and Resloping of Landscape, Stump Removal, Brush and debris removal , and 1 more
"Ken and Rowan are a pleasure to work with and we could not be happier with the work they did for us. They took a very large, pea stone patio area from sad to amazing by adding curbing along three sides (to separate the pea stone area from the lawn and driveway), refreshed the pea stone in between pavers on our long walkway, and we able to smartly cover up some ugly yard drainage while allowing it to still function properly. Our project was a bit unusual but they had the expertise (and enthusiasm!) to help us figure it out. They spent many hours beforehand problem solving and planning out the project with us. Ken communicated with us throughout all the materials purchases and both Ken and Rowan were very responsive to all our requests. On top of that, they got the project done within a tight timeframe as we had a deadline. We gained so much confidence in them that we have 3 more large projects (large retaining wall, walkways, and a drainage area along our driveway) that we plan to hire them for!"
Julie L. in June 2022
Landscape Construction, Farm Restoration and Construction, Commercial Snow Removal , and 1 more
"Unbelievable attention to detail transformed our farm back to life"
Theresa C. in July 2020
In business since 2022
Grading and Resloping
About us: "We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!"
Hollis Foundation Contractors are rated 4.4 out of 5 based on 13 reviews of 13 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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