Document the condition
Note the location, timing, any weather connection, how things have changed, and previous repairs. Photos and basic measurements make the first conversation go much further.
Read the local context
Waukegan's oldest housing stock, concentrated in the Near North Historic District that reaches back to the 1840s, was largely built before modern window units existed, and later postwar and contemporary construction added its own range of opening sizes and frame materials. Add lakefront wind exposure off Lake Michigan and the freeze-thaw cycle that comes with it, and opening condition, flashing, and frame material matter as much in Waukegan as the glass package itself.
Ask what will be hidden
Flashing, sill condition, and exposure to lake winds all get assessed per opening before any product decision. Once everything is trimmed out, this preparation is out of sight -- the written scope should document what was inspected and verified first.
Compare complete scopes
Compare whether each proposal spells out protection, access, materials, permits, testing, cleanup, restoration, exclusions, warranties, and change-order terms.
What official local sources add
The City of Waukegan's Engineering Department requires a Watershed Development Ordinance (WDO) permit for regulated development and work in the floodplain or floodway, per Lake County's Watershed Development Ordinance as adopted in City Ordinance Section 18-10. Because Waukegan's lakefront terrain includes ravines and mapped flood hazard areas, parcel-specific floodplain status and permit requirements should be confirmed with the city before foundation, grading, or exterior work begins.
Sources were reviewed 2026-07-26. Confirm the parcel's flood-zone status, any historic-district designation, permit needs, and current requirements with the City of Waukegan before authorizing work.