Document the condition
Record where dampness appears in the Ann Arbor home, its relationship to rain or snowmelt on the property's slope, and prior repair attempts. A few photos and measurements help frame the first call.
Read the local context
The city's Old West Side, platted starting in 1845 and listed on the National Register in 1972, still carries two-story frame houses built for a fast-growing 19th-century college town -- about 85% clapboard-clad, the rest brick or stucco -- later filled in with Dutch Colonials, bungalows, and Tudor cottages on small lots. Underneath that older core and the newer subdivisions built across Washtenaw County sits a mix of sand, gravel, and clay-rich glacial till left by retreating ice roughly 14,000 years ago -- fertile ground that also drains poorly, one reason foundation, crawl space, and drainage work stays in steady demand across the area.
Ask what will be hidden
On Ann Arbor's hilly moraine lots, water can enter from several directions at once — surface runoff, grading that slopes toward the house, hydrostatic pressure from the glacial till below, cracked walls, or failed floor joints — and telling them apart is the first job, not the last. The written scope should explain what Ann Arbor preparation and verification will no longer be visible once the job is complete.
Compare complete scopes
A complete Ann Arbor proposal addresses protection, access, materials, permits, testing, cleanup, restoration, exclusions, warranties, and change-order pricing -- confirm each one is there before comparing totals.
What official local sources add
The City of Ann Arbor adopted a Floodplain Management Overlay Zoning District in 2021 that sets standards above the federal minimum, requiring new residential construction to have its lowest floor elevated at least 1 foot above the mapped 0.2%-annual-chance flood elevation. The city has also taken part in FEMA's Community Rating System since 2017, reaching Class 6 in 2018 -- worth checking with the city's floodplain and stormwater programs before foundation, grading, or exterior work begins.
Last checked 2026-07-19. Confirm the Ann Arbor parcel's flood zone, historic-district status, and permit requirements directly with the city before work begins.