Company Facts
Olshan Foundation Repair at a Glance
The work
- Best for
- Homes where a settling slab and poor drainage go together
- Primary service
- Waterproofing
Where
- Headquarters
- San Antonio, TX
- Service area
- San Antonio
- Emergency service
- Not advertised
Money and guarantees
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Lifetime warranty described as transferable, with three underpin tiers (partial exterior, full exterior, exterior and interior); full terms are not published on the site.
Credentials
- BBB A+ rating
- BBB A+ rating (reported by the company, not verified)
Editorial Review
Our Take on Olshan Foundation Repair
Olshan is a foundation company first, so it fits best when settling and water problems overlap. Its site documents real drainage, French drain and basement waterproofing services, and 1,180 reviews at 4.8 back up the crews. Ask for the full warranty terms and proof of insurance before signing.
Best forHomes where a settling slab and poor drainage go together
What We Like
- Founded in 1933 and holds U.S. Patent 8,500,368 on the Cable Lock ST Plus piling system
- Separate pages for exterior drainage, basement waterproofing and crawl space encapsulation
- Basement options include Water Lock Plus, sump pumps, footer drains, French drains and exterior wall barriers
- Free estimates by Certified Structural Technicians, with payment plans from $125 a month
- 4.8 from 1,180 Google reviews, with crews praised by first name
Things to Consider
- Core trade is foundation repair, and Google lists it as a general contractor rather than a waterproofing specialist
- No contractor licence number or emergency service is stated on the site, and full warranty terms are not published
- One reviewer reported three unreturned calls to the accounts office about a payment
Customer Ratings
Google Reviews for Olshan Foundation Repair
Customer ratings shown here come from Google. They are separate from our editorial review above.
Rating Distribution
- 5 stars93%
- 4 stars3%
- 3 stars1%
- 2 stars1%
- 1 star2%
iAbout this distribution
The distribution reflects the 1195 Google reviews available when this profile's review data was last refreshed on November 11, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.
Recent Google Reviews
Editorial Ranking
Why Olshan Foundation Repair Made Our Top 4
It holds position 3 in 4 Best Waterproofing Companies in San Antonio, TX (2026).
Areas Served
Based in San Antonio, TX.
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
Company Background
About Olshan Foundation Repair
Olshan Foundation Repair traces its history to 1933 and holds U.S. Patent 8,500,368 on the Cable Lock ST Plus piling system it uses to stabilize homes on expansive clay. The San Antonio office works from 1720 SE Loop 410 Access Road in the Eastern Triangle and lists service to Alamo Heights, Monte Vista, Olmos Park, Stone Oak, Converse, Schertz, Cibolo, Alamo Ranch, New Braunfels and Seguin. Be clear about the core trade: this is a foundation repair firm first, and Google files it as a general contractor. It earns a place on a waterproofing ranking because its own site carries separate pages for exterior water management, basement waterproofing and crawl space work.
The drainage page describes an underground Olshan Drainage System meant to carry water away from the foundation. The basement page lists interior and exterior approaches, including Water Lock Plus interior channels, sump pumps, footer drains, French drains, double barrel drains and exterior wall moisture barriers with dimple board. The company also offers crawl space encapsulation, polyurethane concrete leveling and under-slab plumbing. A Certified Structural Technician inspects first, and estimates are free. Financing starts at $125 a month. The lifetime warranty is described as transferable, though the page does not publish the full terms, so ask to see them.
Olshan has 4.8 from 1,180 Google reviews, read October 21, 2026. Reviewers praise crews by name, including Jose and Andrew on a drip irrigation install, Patrick, Freddy and Joseph on a raised sidewalk, and Alejandro's crew on a pier job that lifted a house 2 1/2 inches. One reviewer who loved the field crew said the accounts office never returned three calls about a payment, which is worth remembering when you hand over card details.
This suits owners whose water trouble is tied to a settling slab or poor grading, where one firm can look at both the soil and the drainage. It suits less well anyone who wants a pure waterproofing specialist or a plumber. Before booking, ask which drain components are in your quote, who services the system later, and how the warranty transfers. Texas has no state waterproofing licence, and the website lists no contractor licence number, so ask for proof of insurance, confirm any plumbing is done by a TSBPE-licensed plumber, and check whether the City of San Antonio requires a permit for your job. Google lists hours as 8 AM to 8 PM on weekdays and 8 AM to 5 PM on Saturday, closed Sunday.
Foundation repair is the core of Olshan's San Antonio work. Crews install the patented Cable Lock ST Plus piling system, and recent reviewers name supervisor Joe and crews led by Andrew and Juan on multi-day pier jobs, praising clean yards and replaced concrete. Texas has no state licence for foundation repair, so ask for a structural engineer's letter on the pier plan and the transferable warranty terms in writing. 4.8 from 1,195 Google reviews, read November 11, 2026.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Other Sources
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Pricing
Company Pricing & Estimates
What this company publishes about its own pricing.
- Free estimates
- Yes
- Financing
- Available
- Workmanship warranty
- Lifetime warranty described as transferable, with three underpin tiers (partial exterior, full exterior, exterior and interior); full terms are not published on the site.
Gallery
Project Photos
Business-submitted, reviewed by our editors
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Olshan Foundation Repair FAQs
Is Olshan Foundation Repair licensed in San Antonio?
Texas has no state waterproofing or foundation contractor licence, and Olshan's website lists no licence number. The site does report an A+ BBB rating, a U.S. patent on its Cable Lock ST Plus piling system, and membership in the National Foundation Repair Association San Antonio chapter. Ask for proof of insurance, confirm any plumbing is done by a plumber licensed by the Texas State Board of Plumbing Examiners, and check with the City of San Antonio whether your job needs a permit.
What are Olshan Foundation Repair's hours and do they do emergency calls?
Google lists the San Antonio office open 8 AM to 8 PM Monday to Friday and 8 AM to 5 PM on Saturday, closed Sunday. The company's own page shows 8 AM to 5 PM, so call (210) 495-5758 to confirm. Olshan's site does not mention emergency or 24 hour service, so do not count on a same night visit. Estimates and structural assessments are free and can be requested through its inspection form.
Does Olshan Foundation Repair offer a warranty, financing and drainage work in San Antonio?
Yes to all three, with caveats. Olshan describes a transferable lifetime warranty with three underpin tiers, but the site does not publish the full terms, so request them in writing. Payment plans start at $125 a month. Drainage work includes an underground Olshan Drainage System, and the basement page lists sump pumps, footer drains and French drains. The company lists service to Alamo Heights, Monte Vista, Olmos Park, Stone Oak, Converse, Schertz, Cibolo, New Braunfels and Seguin.
Is Olshan Foundation Repair licensed and insured?
We checked 0 of 3 credentials against the issuing authority. Verified items carry the date we checked; reported items are what the business told us and we could not independently confirm.
What areas does Olshan Foundation Repair serve?
San Antonio. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does Olshan Foundation Repair offer emergency service?
Emergency availability is not listed for this company. If you need an urgent call-out, check the ranking for companies that do list it.
What warranty do they offer?
Lifetime warranty described as transferable, with three underpin tiers (partial exterior, full exterior, exterior and interior); full terms are not published on the site.. There are usually two warranties on a job: the manufacturer covers materials, the contractor covers workmanship. Get both in writing and check whether the workmanship coverage transfers if you sell.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
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About This Business Profile
- Last reviewed
- October 2026
- Profile last updated
- November 11, 2026
- Google review data updated
- November 11, 2026
- Sources checked
- Issuing authorities, Google Business Profile, Company website
- Could not verify
- BBB A+ rating (reported only), insurance
- Sponsorship status
- No commercial relationship