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Foundation repair specialist4.8(19 Google reviews)

Keystone Foundation & Waterproofing

Foundation repair specialist · Cambridge, MA

245 First St, Cambridge, MA(617) 216-1173keystonemasonryandchimney.com
Free estimateWarranty
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About Keystone Foundation & Waterproofing

Keystone Foundation & Waterproofing is a foundation repair company in Cambridge, Massachusetts.

On its website (keystonemasonryandchimney.com) it mentions foundation inspection, foundation crack repair, foundation settlement repair, slab foundation repair, bowing basement wall repair and foundation waterproofing. The quotes below link to the page where each one appears, so you can check them.

Its website mentions 30 years of experience.

Google Maps lists it as open 24 hours, every day.

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Foundation services

What Keystone Foundation & Waterproofing says on its website

Quoted from its website, read in October 2026.

Also typical: foundation underpinning. That's our assumption from the type of company, not a claim by the company – please confirm.

Inspections, warranty and payment

What its website says (October 2026). Ask for the warranty in writing and read what it covers before signing.

Opening hours

MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours

As listed on Google Maps (July 2026). Call before visiting – hours change.

Keystone Foundation & Waterproofing on the map

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Other pins: companies within 30 miles. Map data © OpenStreetMap contributors.

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Before you call, ask about

  • The cause they see, the method, and how many piers or anchors, in writing
  • Whether permits, engineering, excavation and cleanup are in the price
  • The written warranty: what it covers and whether it transfers to a buyer
  • License or registration number and proof of insurance

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Questions about this company

How do I contact Keystone Foundation & Waterproofing?

By phone at (617) 216-1173. Through its website, keystonemasonryandchimney.com.

When is Keystone Foundation & Waterproofing open?

Google Maps lists it as open 24 hours, every day.

What foundation services does Keystone Foundation & Waterproofing offer?

On its website it mentions foundation inspection, foundation crack repair, foundation settlement repair, slab foundation repair, bowing basement wall repair and foundation waterproofing.

Does Keystone Foundation & Waterproofing offer free inspections?

Its website mentions “Free Estimate”. Ask what the visit includes and whether you'll get the findings in writing.

How much does foundation repair cost in Massachusetts?

Estimated for Massachusetts: sealing a crack about $262–$839; repairing a settling foundation about $4,720–$20,980, mostly depending on the number of piers. Try the cost calculator and compare written quotes.

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