Groundworks

5.0(214 reviews on Google)

Based in Ontario, CA · more companies in Ontario

Call (909) 220-5664 Visit website

About Groundworks

Groundworks in Ontario repairs foundations and concrete for homes in Ontario, Rancho Cucamonga, Fontana and the Inland Empire. It works on foundation cracks, sagging floors and uneven slabs, using patented piering systems and concrete lifting, with written warranties on the work. Free, no-obligation inspections are offered. The business is veteran owned. Rated 5.0 from 214 Google reviews, 211 of them five stars.

What reviewers mention: knowledgeable staff (52), thoroughness (36), polite staff (26), crawlspace inspection (18), clear explanations (16), foundation repair (13), concrete lifting (8), crawlspace encapsulation (6), driveway repair (6), crack repair (6)

Where Groundworks works

Based in Ontario, California. Its website also names Rancho Cucamonga, Fontana. Call to confirm they cover your address.

Services and details

  • Foundation or waterproofing work

    Yes

  • Foundation repair

    Yes

  • Piers for settling

    Yes

  • Crack repair

    Yes

  • Concrete lifting

    Yes

  • Free inspection or estimate

    Yes

  • Warranty

    Yes

No information yet on basement waterproofing, bowing wall repair, crawl space repair, sump pumps, drain tile and drainage, egress windows, financing, states a license. The website did not say; call and ask.

Contact

Details last checked against the company's website and Google listing on 2026-10-21. Report a correction or request removal. Back to foundation repair companies in Ontario.