Residential Development's presence in the Illinois market today shows up as a resale story rather than an active building program — across the two subdivisions tracked here, there are zero new-construction listings, which points to a builder no longer actively developing in these communities. That makes this page most useful as a guide to two established subdivisions where the original homes have matured into the resale market. In Crystal Lake, Colony Ridge remains the builder's footprint on the northwest side, with floor plans like the Ascot and Briarwood still turning over occasionally, though no homes are currently listed for sale there. In Naperville, Winding Creek is the more active of the two right now, with homes — including the Essex, Nottingham, and Shagbark plans — currently priced between $895,000 and $1,075,000, reflecting years of appreciation well beyond original builder pricing. Buyers considering either subdivision should approach them as resale purchases: expect mature trees and settled landscaping, no builder warranty or new-construction HOA assessments, and home ages and mechanical systems that warrant a standard inspection rather than a walkthrough of finish selections. Overall, this pairing suits move-up buyers targeting Naperville's upper price bracket alongside those looking at a quieter, established Crystal Lake neighborhood, more than shoppers hunting for a current builder price sheet.