Home Additions
Chicago
Need more space without moving? We design and build room additions, second-story expansions, sunrooms, and bump-outs that integrate seamlessly with your existing home — structure, finishes, and all.
Chicago’s Trusted
Home Additions Contractor
A home addition is one of the most structurally complex projects a contractor can take on. It requires seamless integration with your existing foundation, roof, electrical, and plumbing systems — and a contractor who can manage all of it under one license. Lee & Sam is a licensed general contractor serving Chicago, the suburbs, and Northwest Indiana.
Our team brings 25+ years of construction expertise to every addition project. We handle all architectural coordination, city permits, inspections, and trade scheduling from groundbreaking to final walkthrough.
Serving all 55 Chicago neighborhoods — from Lincoln Park to Hyde Park — plus the North Shore, Western and South suburbs, and Northwest Indiana.
Everything Your Home Addition
Project Needs
Foundation & Structural Work
Every addition starts with a proper foundation. We handle excavation, footings, framing, and structural integration with your existing home — no shortcuts.
Roofing & Exterior
New rooflines, siding, windows, and exterior finishes matched to your existing home so the addition looks like it was always there.
Electrical & HVAC Extension
We extend your existing electrical panel and HVAC system into the new space — or install dedicated systems where required by the addition's scope.
Plumbing
Bathroom additions, laundry rooms, and wet bars require new plumbing rough-ins handled by licensed plumbers as part of the full project scope.
Interior Finishing
Drywall, insulation, flooring, trim, paint, and all interior finishes completed to match or complement your existing home's style.
Permits & Inspections
Home additions require multiple permit types — zoning, building, electrical, plumbing, and mechanical. We manage all of them with the City of Chicago or your municipality.
Our Home Addition
Process
Site Assessment & Design
We assess your property, zoning constraints, and setback requirements before any design work begins. Then we develop a detailed scope with architectural drawings and structural plans.
Permitting
We submit all permit applications and handle city or municipality review. Addition permits typically take 4–8 weeks to approve — we start this process early so it doesn't delay construction.
Construction
Foundation, framing, roofing, systems, and finishes executed in proper sequence by our licensed crew and trade partners. Weekly updates throughout.
Final Inspections & Walkthrough
We coordinate all final inspections with the city, receive certificate of occupancy, and walk through every detail of the new space with you before close-out.
Home Additions Across
Chicago & Chicagoland
Home Addition Projects
Across Chicago
Home Addition
FAQs
Have more questions? We're happy to walk through your addition project in detail.
Call Us NowMost room additions take 4–6 months from permit approval to final walkthrough. Second-story additions or larger projects may take 6–10 months depending on complexity.
For most additions in Chicago, yes — architectural drawings are required for permit submission. We coordinate directly with licensed architects and can recommend trusted partners.
In most cases yes, depending on which part of the home is being expanded. We seal off construction areas, maintain a clean job site, and work to minimize disruption to your daily routine.
Every home addition project is different. We've completed work across a wide range of budgets — from targeted updates to complete gut rehabs — and we build our estimates around what you actually need, not a one-size-fits-all number. The best way to get an honest figure is a consultation where we walk the space together.
Yes. We research your property's zoning district, setback requirements, and any applicable restrictions before scoping the project — so your addition is designed to be approvable from day one.
Ready to Start Your
Home Addition Project?
Get a free, detailed estimate from Chicago's trusted home addition contractor.