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
Grid reliability has been a real, documented issue in the Naperville area, not just a marketing point. The derecho that crossed the wider Chicago region on August 10, 2020 left more than 800,000 customers without power at its peak, with an EF-1 tornado confirmed near Wheaton as part of that system, and the March 31-April 1, 2024 tornado that reached EF3 strength in Naperville itself damaged roughly 230 residences along with utility poles and trees. A severe storm line on July 15, 2024 again brought high winds through the western suburbs. Standby power sizing and transfer-switch planning both depend on a home's actual electrical panel and fuel access, which vary by era of construction.
Ask what will be hidden
Connected load, fuel supply, transfer equipment, pad elevation and drainage, clearances, utility coordination, permits, startup testing, and maintenance access shape a dependable installation. 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
The City of Naperville is the local permitting authority for land-disturbing activity and requires property owners to maintain on-site stormwater control facilities; Naperville has adopted DuPage County's floodplain regulations for the portions of the city within DuPage County, and Naperville's own stormwater plan relies on storm sewers, detention basins, and overflow routes. DuPage County Stormwater Management enforces the countywide Stormwater & Floodplain Ordinance across five program areas -- Watershed Management, Floodplain Mapping, Water Quality, Regulatory Services, and Flood Operations -- and the county's building code requires soil testing in areas likely to have expansive clay soils.
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.