After Repair Value (ARV): The Foundation of Every Deal
ARV is the single most important number in a fix-and-flip deal. Master the art and science of estimating it accurately.
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Property Valuation6 min read
Foundation Problems: Red Flags and Repair Costs
Foundation issues terrify most investors. Learn to distinguish between cosmetic cracks and structural problems.
Foundation problems range from harmless cosmetic cracks to structural failures that can cost $30,000+ to repair. Learning to identify the severity of foundation issues is a valuable skill that helps you avoid money pits and find discounted opportunities that other investors pass on.
Minor issues (cosmetic, $0–$500): hairline cracks less than 1/8 inch wide in a random pattern, minor stair-step cracks in block foundations following mortar joints, and small shrinkage cracks in poured concrete. These are normal settling and don't indicate structural problems.
Moderate issues ($2,000–$10,000): horizontal cracks in basement walls (indicating lateral soil pressure), stair-step cracks wider than 1/4 inch (indicating differential settling), minor bowing of basement walls (less than 1 inch inward), and water intrusion through foundation cracks. These require professional assessment and typically involve carbon fiber strapping, wall anchors, or targeted underpinning.
Severe issues ($10,000–$50,000+): significant wall displacement (more than 1 inch), vertical displacement with one section higher than another, major structural cracks with visible offset, and floor slab heaving or sinking. These may require full underpinning with helical or push piers, wall reconstruction, or drainage system installation.
During property evaluation, look for interior indicators: doors and windows that don't close properly, sloping floors (use a level or a marble), diagonal cracks above door frames, gaps between walls and ceilings, and cracked drywall in a stair-step pattern. Exterior indicators include visible foundation cracks, separated trim or fascia, chimney leaning or separating from the house, and poor drainage grading toward the foundation.
Always hire a structural engineer ($300–$600) for any foundation concerns beyond hairline cracks. Their report provides a professional opinion on the severity and recommended repair, which is invaluable for budgeting and for disclosing to future buyers.
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