The most common construction defects
Almost every construction site has defects — dozens per new build on average. They only get expensive when nobody catches them in time. These are the classics:
Cracks in walls, ceilings, and screed
Not every crack is a defect — shrinkage cracks in screed are often harmless, settlement cracks in masonry are not. What matters is the path, width, and location. One photo is enough for a first assessment of whether a crack should be monitored or reported.
Moisture and leaks
Damp walls, wet basements, water stains on the ceiling: moisture damage is among the most expensive defect categories because it often shows late. The earlier a damp spot is documented and clarified, the smaller the damage.
Mold in new construction
Mold shortly after move-in is frequently a construction defect — trapped construction moisture, thermal bridges, or faulty insulation. Black spots on a wall or window reveal should be checked before they spread.
Waterproofing in bathrooms and showers
Missing or faulty waterproofing under tiles only shows up after years — and is then especially expensive. Before tiling is the only moment when the waterproofing can be checked from a photo.
Window and door connections
Leaky connection joints, crookedly installed windows, doors that stick: connection details are error-prone and directly affect energy use and comfort.
Shell construction: concrete and masonry
Honeycombing, exposed rebar, unfilled mortar joints — shell defects can only be documented while they're visible. After that they disappear behind plaster and insulation.