5th Avenue Construction's Illinois footprint centers on a single, well-defined community: Glens of Connemara in Lemont. This is the builder's only subdivision in the market, and it's built around a small collection of floor plans — the Ashley Rose, Carna, and Devonshire — giving buyers a tight, curated set of layouts rather than a sprawling menu of options. Homes here currently trade in the $860,000–$924,900 range, reflecting the neighborhood's larger lot sizes and higher-end finishes relative to much of the surrounding Lemont market.
Because this is the builder's sole community, Glens of Connemara also serves as the primary reference point for anyone researching 5th Avenue Construction's work in Illinois — it's where the bulk of activity, listings, and buyer interest are concentrated. Shoppers should confirm directly whether any homes remain available to build versus resale, since supply in a single-community builder page like this can shift quickly.
Overall, this is a niche, boutique offering rather than a large-scale production builder presence. It tends to draw buyers who want a specific, established Lemont address with move-in-ready or near-complete homes at the upper end of the local price spectrum, rather than shoppers comparing dozens of communities across the southwest suburbs.