Waterproofing and Foundation Specialists

Boston Top Rated!

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Basement and Foundation

Foundation and Basement Repair experts

Cambridge MA

Free Estimate

Discounts Available

Lifetime Warranty 

 Lifetime Warranty | Free Estimates | Budget Friendly Solutions

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Boston's #1 Foundation & Basement Waterproofing Contractor

Protect your homes' foundation and prevent it from further damage by relying on the experts at Hammerstone Foundation & Masonry for prompt and effective solutions. With over 45 years of combined experience, we assure you of exceptional quality services. We'll begin with a leak investigation and stone restoration and finish off with a waterproofing coating.
You don't have to worry about leak repairs or mold growth when you rely on us. Call today to get a FREE estimate. Our comprehensive list of Services Include:

  • Foundation repair 
  • Foundation crack repair service
  • Foundation stabilization
  • Foundation stabilization services
  • Foundation tuckpointing service
  • Basement bowed wall repairs
  • Basement damp proofing
  • Basement repointing
  • Basement wall repairs
  • Basement leak repair
  • Basement waterproofing
  • Basement settlement repair
  • Basement structural repair
  • Seal basement walls
  • Pouring basement walls
  • Waterproof coatings 
  • French drains 
  • Leak investigation 
  • Lintel, sill, and window replacement 
  • Caulking and sealants 
  • Clear water repellents 
  • Expansion joints
  • Painting and coatings 
  • Power washing 
  • Stone restoration 


A healthy home starts in the basement...


Why choose us?


* FREE Estimates and Inspections

* Lifetime warranty

* Decades of experiences

* Quality Work at Affordable Price

* Same day /Next day repairs

* Top rated/Great reviews

* 24/7 Emergency service


Here's What Our Satisfied Customers Have to Say

  • I am very happy with the recent installation of our chimney. Workers were very professional, knew their trade and work was completely in a very timely manner. I would happily recommend them to anyone who needs chimney services.


    - Ashley

  • They repaired our front porch and steps. They are professional and friendly. The result was outstanding. We use again and sure to refer other people. Thanks for a job well done.


    - Paul

  • I am very happy with the basement waterproofing work they did. We experienced all this crazy flooding over the weekend and getting our basement waterproofed. He was extremely nice! Very informative and thoughtful. Personable, too! Our family is very excited! Very happy with his knowledge and professionalism. I would highly recommend this company for any basement and foundation repair.


     - Nancy

  • Slide title

    They repaired foundation crack at home. These guys did quality work and were very professional. Just a phenomenal job from start to finish. I recommend them to anyone who need a fix on their foundation.


    - Shelly

  • They waterproofed our basement. They were extremely polite, friendly, on time and efficient. We couldn't have been happier with the service we had. The owner came to give us the quote and he also was so nice, knowledgeable and explained the system. They identified and resolved my basement flooding issue. We love how the basement looks now. We would recommend this company to everyone we hear who needs their assistance.


    - Chris

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