Cracks in the brick, doors that stick, floors that slope. The best foundation repair companies in Sunnyvale start with an honest evaluation, use proven piers or drainage fixes, and back the work with a transferable warranty.
Picked by people who read the reviews.
Our review committee researched foundation repair companies serving Sunnyvale and the surrounding area, read consumer reviews across the web, and settled on these five. We look at how many people have reviewed a company, what they say, and how the company holds up over time. We keep the full recipe to ourselves so it cannot be gamed. Google ratings shown are as of November 9, 2026. No company paid to be here, and none can. More on how we choose →
How to hire a foundation repair company in Sunnyvale
Get an independent engineer's opinion before committing to a large repair.
Ask whether the warranty transfers to the next owner and what it excludes.
Compare pier types: pressed concrete, steel, helical, and why they recommend one.
Ask about drainage and watering; many problems start with soil moisture, not the slab.
Foundation Repair Company questions, answered
Do cracks always mean foundation problems?
No. Hairline cracks in brick or drywall are common with seasonal movement. Doors that stop latching, stair-step cracks and sloping floors deserve an evaluation.
How long does foundation repair take?
Most pier jobs take one to three days. Landscaping and drainage work may follow.
Will repair fix the cracks?
Lifting the foundation often closes cracks partly. Cosmetic repairs to brick and drywall are usually a separate step.
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