What Should I Check If a Property Passes a Dry-Season Look But Drains Poorly in Monsoon?

Dry-season photos can hide drainage flaws, so you need a wet-season check or reliable evidence. Have an independent inspector measure actual ground levels, surface falls and drainage capacity across the site. Look for water flow routes: where does runoff go after rain, does it pond near foundations, does driveway or terrace water pool, and are pool overflow channels directing water away from walls and into proper outlets? Wear waterproof boots if you visit during rain; check walls, steps and floor slabs for damp patches or salt-induced staining after heavy rain. Interview neighbours about ponding history, drainage blockages and maintenance schedules. Landscaping can mask low points, so verify the water path from property to the road or natural outlets. A dry-season viewing isn’t proof of wet-season performance, so insist on live data. If you can’t visit during heavy rain, request video or photos after a rain event, plus a written note from a local builder or inspector describing ground slope and drainage outlets. Ensure the contract has a clause that allows post-purchase remediation if drainage fails to perform as expected.