Why estimates vary
A DuPage County job on an in-town historic lot with a narrow side yard costs differently than one on a wide suburban subdivision lot, and concealed rot from decades of freeze-thaw cycles can change the number after the wall is opened up.
Materials and scope of work
Vinyl, fiber-cement, and wood each carry different attachment methods and finish needs, and a proposal should say plainly what's included, what's excluded, and how disposal and restoration are handled.
Permits in Naperville
The city's permitting and floodplain rules may apply depending on the property and scope. Confirm current requirements with Naperville and the provider you choose.
This isn't a quote
Treat every figure here as planning-level only. Ask for a written, site-specific scope before agreeing to anything.