We are Chicago Home Additions, a family-owned general contractor crafting seamless room expansions and ADUs across Chicago. We turn tight floor plans into spacious family homes.
From bump-outs to backyard cottages, we deliver the best home additions in Chicago.
We pour new frost-protected footings, frame with 2x6 studs for thicker insulation, and tie new roofs into existing trusses for leak-proof transitions. Each addition gets seamless siding and window matches so the new square footage looks original. We handle all zoning variances and city inspections so you get legal, livable space fast.
Get a QuoteNeed a nursery off the primary suite or a sunroom facing the yard? We design cantilevered foundations to save yard space and install Pella windows for energy rebates. Electrical is roughed in for future smart switches and CAT6 runs, so the room is tech-ready on day one.
Get a QuoteConvert your garage or build a standalone Accessory Dwelling Unit with full kitchen and bath. We handle sewer tap permits, mini-split HVAC sizing, and egress window placement to meet Chicago ADU code. Separate electric meters and sound-dampening insulation make the unit tenant-ready.
Get a QuoteChicago Home Additions is family-owned, handles every permit in-house, and includes free design consultation on every project.
Three generations of builders run every job. You deal directly with owners who sign off on every beam and tile. No middlemen, no surprises.
Our in-house designer sketches your addition on the first visit. You leave with a scaled drawing and ballpark quote, no obligation.
We pull structural, zoning, and trade permits ourselves. No extra fees, no delays waiting for third-party expediters.
We let the work speak — but here's what a few clients have said after moving back in.
"They lifted our 1920s bungalow and added a full second story. Crew cleaned the site daily and the new staircase ties in perfectly with the original trim."
"Our garage ADU went from permit to tenant move-in in ten weeks. Kitchenette layout is smart and the mini-split keeps it cozy all winter."
Call (773) 945-6331 or fill out the form for a free estimate. Most calls returned within one hour.
Request a Free Estimate