First, diagnose
On Ann Arbor's hillier lots, redirecting surface water before it reaches the foundation is often more effective than any interior fix.
The full scope
- Grading redirected on sloped lots
- Downspout routing away from lower ground
- Window well drainage, where applicable
- Surface swales for hillside runoff
- Landscaping's role in channeling water
Worth noting locally
On Ann Arbor's moraine terrain, redirecting water before it reaches the foundation is often the highest-value fix available.