What decreases property value the most?
Major defects beat cosmetic issues every time.
Quick answer: Water or structural damage, unpermitted changes, and sloppy DIY finishes drag value down fastest.
Buyers penalize major defects far more than dated paint. Active water damage, structural movement, and mold signal expensive repairs and can cut offers dramatically. Unpermitted additions or electrical work scare lenders and insurers.
Sloppy DIY projects also hurt value: uneven tile, amateur wiring, misaligned cabinetry, or loud color choices create doubt about hidden issues. Neglected maintenance—roof leaks, failing gutters, soft siding, pests—telegraphs larger problems.
Biggest value killers
- Water intrusion, foundation cracks, or sagging floors.
- Unpermitted additions, bedroom conversions, or panel work.
- Obvious DIY mistakes in tile, drywall, or flooring.
- Old HVAC, unsafe electrical, or recalled panels.
- Over-customized finishes that are expensive to undo.
Document repairs with photos and permits, correct life-safety issues first, and order a pre-sale home inspection if you plan to list soon. Clean, neutral, code-compliant work builds buyer trust faster than flashy finishes.