Short Answer
Look for cracks in the foundation walls, floors, or exterior brickwork. Check for doors and windows that stick, uneven floors, or gaps between walls and ceilings. Look for signs of water intrusion in the basement or crawlspace. While a visual inspection can spot obvious issues, a professional structural engineer is needed to evaluate significant cracks or movement. Foundation repairs can cost $2,000 to $20,000 or more, so it is important to identify problems early.
The foundation is the most important structural element of a home, and foundation problems can be expensive and difficult to fix. When evaluating a foundation, look for horizontal cracks, stair-step cracks in brick or block walls, and cracks wider than a quarter-inch. Check for signs of movement, such as doors that stick or do not close properly, gaps between walls and ceilings, sloping floors, and cracks in drywall around door and window frames. Look for signs of water intrusion, such as efflorescence (white mineral deposits), mold, musty odors, or standing water in the basement or crawlspace. Check the grading around the foundation. The ground should slope away from the house to direct water away. If you see significant cracks, bowing walls, or signs of structural movement, hire a structural engineer for a professional evaluation. An engineer will cost $300 to $800 but can save you from buying a home with a serious structural problem.
Bob's Advice
Redfin Senior Agent · AI Certified Agent
Foundation issues are one of the few things that can make me advise a buyer to walk away from a deal. Not all cracks are problems, but some are serious. I have helped buyers navigate foundation concerns by bringing in structural engineers and negotiating with sellers. If you are looking at a home and something feels off about the floors or walls, trust your instinct. Let us bring in the right expert to evaluate the foundation before you commit. A few hundred dollars on an engineer is far better than tens of thousands in unexpected repairs.
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