The short answer
Check the Ceilings and Walls
Start in each room by looking up. Water stains often appear as yellow or brown rings on the ceiling, sometimes with a darker center. Feel the drywall around any stain. If it gives slightly under your fingers, the material may be wet or weakened from an old leak.
Walls can show damage too, especially near the floor or around windows. Look for bubbling paint, peeling wallpaper, or a wavy texture on the surface. These signs often mean moisture has been working behind the finish. A fresh coat of paint can hide these clues, so bring a flashlight and look at an angle.
Inspect Floors and Baseboards
Walk through the home and pay attention to how the floor feels underfoot. Hardwood or laminate planks that are cupped, warped, or buckling may have been wet in the past. Carpet can hide a lot, so press down with your hand to check for dampness or a spongy feel.
Baseboards and the bottoms of walls are another spot to examine. Look for dark discoloration, cracks, or a soft texture. If the baseboard is loose or the paint is chipped near the floor, water may have pooled there at some point. Also check the corners of the room, where leaks often travel.
Look for Musty Odors
Your nose can be a useful tool. A musty or earthy smell, even if faint, may point to hidden moisture and mold growth. Open closets, cabinets, and the pantry to get a better sense of the air. If the odor is strongest in a particular area, damage may be nearby.
Sometimes the smell is masked by air fresheners or cleaning products. If the home feels overly scented, ask the owner or agent why. You can also leave the windows closed for a few hours before your visit to let any odors concentrate. Persistent mustiness is a reason to bring in a water damage professional.
- Musty smell in a closet
- Earthy scent in a lower-level room
- Odor near a bathroom or kitchen
- Smell that returns after airing out
Examine Plumbing and Appliances
Look under sinks and behind the washing machine for signs of past leaks. Water stains on the cabinet floor, rust on metal fittings, or a warped wooden panel can all indicate a previous problem. Check the water heater for a rusted base or moisture around the valves.
Inspect visible pipes for mineral buildup or green corrosion, which suggest slow leaks over time. Also look at the shutoff valve location, if you can find it. Knowing where it is can help you act quickly if a new leak appears.
- Stains under the sink
- Rust on the water heater base
- Corrosion on pipe joints
- Warped cabinet doors
- Moisture around the toilet base
Check the Attic and Crawlspace
If the home has an attic, climb up with a flashlight and look at the underside of the roof. Dark streaks on the wood or insulation that is matted and discolored are signs of a past roof leak. Also check for daylight coming through the roof, which means water can enter.
A crawlspace can reveal foundation issues. Look for efflorescence, a white chalky residue on concrete walls, which indicates moisture. Stains on the floor or a musty smell down there are also clues. For a thorough look, a water damage assessment can document all these findings for you.
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (480) 898-4279Frequently asked questions
Can a home inspector find past water damage?
A general home inspector can spot obvious signs, but they may not catch hidden damage behind walls or under flooring. A water damage inspection uses moisture meters and other tools to find issues that are not visible. Consider both if the home has any signs of past leaks.
Should I ask the owner about past water damage?
Yes, ask directly. Many owners are required to disclose known issues, but they might not mention every past problem. Ask about any repairs they made and whether they had a leak in the last few years. Their answer can guide where to look more closely.
Does past water damage affect the home's value?
It can, especially if the damage caused structural issues or mold. The value depends on the extent of the damage and whether it was properly repaired. A water damage assessment can tell you how severe the problem is, which helps in negotiating the price.