You can often tell an existing property has drainage issues by watching how water behaves during and after rain and by looking for the marks it leaves behind. Outside, warning signs include standing water that lingers more than a day, soggy ground, bare or muddy patches where grass struggles, channels cut into soil, mulch washing away, or water flowing toward instead of away from the house, driveway, or building. Near structures, look for soil pulled away from the foundation, damp or muddy bands against exterior walls, or erosion around patios and walkways. Inside, clues include musty smells, damp or stained walls or floors, peeling paint, or a basement, crawlspace, or slab edge that stays humid or wet after storms. If you see the same patterns repeat after more than one storm, that is a strong sign drainage should be evaluated by a contractor who handles grading and site work.
Drainage problems often start with subtle outdoor signs such as standing water that lingers, soft or muddy soil, or runoff flowing toward structures instead of away.
Moisture that repeatedly appears near foundations, basements, crawlspaces, slabs, or hard surfaces is more serious than isolated puddles in open lawn areas.
Recording what you see with photos, notes, and simple sketches during and after storms gives you and any contractor a much clearer picture of the problem.
Sorting what you see into minor, moderate, or higher‑priority concerns helps you decide how quickly to act and how to describe the situation when you seek help.
For most non‑plumbing drainage issues, a contractor experienced in excavation, grading, and site development can study the whole site and recommend changes that improve how water moves across your property.