Document the condition
Note location, timing, weather relationship, changes over time, and any previous work. Photos and simple measurements can improve the first conversation.
Read the Local Context
The Grand River has flooded Grand Rapids repeatedly -- 1904 and 1905, then 1947 and 1948, then most recently April 2013, when the river crested at 21.85 feet -- and the city's own floodplain rules require compliance for work proposed inside FEMA-mapped flood hazard areas near the river and its tributaries, a real consideration for basement work anywhere close to that water table.
Ask what will be hidden
Roof runoff, grading, hydrostatic pressure, wall cracks, floor joints, drainage, and interior humidity can create similar symptoms with very different solutions. The written scope should explain the preparation and verification that will no longer be visible at completion.
Compare complete scopes
Look for protection, access, materials, permits, testing, cleanup, restoration, exclusions, warranties, and change-order rules.
What official local sources add
Grand Rapids participates in the National Flood Insurance Program, and land near the Grand River and its tributaries can fall within FEMA-designated Special Flood Hazard Areas, where projects may require an Elevation Certificate and compliance with the city's floodplain development standards under Chapter 32 of its code of ordinances. The city promotes Low Impact Development as its preferred stormwater strategy, and a 2021 state MS4 permit added a requirement that most development and redevelopment projects retain the runoff difference for the 2-year, 24-hour storm.
Sources were reviewed 2026-07-26. Confirm parcel-specific flood zones, historic-district status, permits, and current requirements with the relevant authority before authorizing work.