Backyard Homes, Built Right
ADU Construction in Chicago, IL
A second home in your backyard — for rental income, an aging parent, or your home office. We design, permit, and build full ADUs across Chicago and the suburbs, with one owner watching every step.
About LN
Chicago's go-to team for ADU construction.
LN Construction Chicago builds backyard homes across the metro — from compact studios to full two-bedroom units. We design, permit, and build the entire structure under one roof, with one owner accountable for the whole project.
Our process starts with a real lot evaluation: setbacks, utilities, trees, drainage, and what your jurisdiction will actually allow. Then a full design with 3D renderings of exterior and interior — sized for your lot and your use case (rental, in-law, office, or multigenerational).
Permits are our job, not yours. We submit the full package to the City of Chicago or the surrounding municipality, respond to plan-review feedback, and schedule every required inspection.
That combination of design, permitting, and construction under one team is why most of our ADU clients refer the next one.
Our Commitment
Three things you can count on, every project.
Precision Planning
Every layout, material, and finish is finalized in 3D before demo begins. You see the project before you live it — and we don't start swinging hammers until you've approved the plan.
Honest Communication
Weekly written progress updates and a single point of contact for the entire build. No 'your guy's out today' surprises and no chasing for status.
Built to Last
Materials, fasteners, and detailing chosen specifically for Chicago conditions — freeze-thaw, lake-effect snow, humid summers, and the way Midwesterners actually use a home.
Why LN
Why ADU clients pick us over the next builder.
ADUs go sideways for a few specific reasons: a contractor who underestimates the permit phase, a design that doesn't match the main house, surprise utility-hookup costs, and a schedule that slides three months past the original date. We built our process around those exact failure points. Honest permit timelines, architectural design that matches your main house intentionally, utility evaluation up front so hookup costs are in the original proposal, and a written milestone-based schedule updated weekly.
Get Your Free QuoteRecent ADU projects.
Challenges We Solve
Challenges we solve every week.
The six things ADU clients run into most — and how our process handles each.
Navigating Chicago-area permit codes
We know the rules in the City of Chicago and the surrounding municipalities — what setbacks apply, what triggers extra review. We handle the entire permit submission and review process.
Matching an ADU to your main house's style
Roof pitch, siding profile, window proportions, trim — we match the details that make an ADU feel original to the property instead of tacked on.
Utility hookups (water, sewer, electric)
Most ADUs tap into existing service with panel and lateral upgrades. We evaluate this on day one and include all hookup costs in the proposal — no surprises.
Designing for rental vs. multigenerational use
A rental ADU and an in-law suite have different optimal layouts, finish choices, and accessibility features. We design specifically for your use case.
Maximizing square footage on tight lots
Two-story builds, coach-house conversions, and clever footprints let you get more usable space out of a Chicago backyard.
Financing & schedule coordination
Construction loans and HELOCs draw on milestones. We coordinate our schedule with your lender so funds release when needed.
Features & Finishes
ADU configurations and features available.
- ✓1-bed layouts
- ✓2-bed layouts
- ✓Detached builds
- ✓Attached builds
- ✓Garage conversions
- ✓Coach-house ADUs
- ✓In-law suites
- ✓Full kitchens
- ✓Permit-ready plans
- ✓Utility hookups
- ✓Matching architectural styles
- ✓Cold-climate insulation packages
Other Services
More from LN Construction Chicago.
The Process
How the ADU process works.
- 01
Free consultation & lot evaluation
We assess your lot for setbacks, utilities, access, and trees — and confirm what your jurisdiction will allow.
Timeline
1 day
- 02
Design & 3D renderings
A full design with 3D renderings of exterior and interior, sized to your lot and use case.
Timeline
1–2 weeks
- 03
Itemized proposal
A complete, line-by-line proposal covering design, permits, construction, and finishes.
Timeline
1 day
- 04
Permits & plan approval
Full permit submission to the City of Chicago or municipality with all required drawings.
Timeline
6–10 weeks (varies by city)
- 05
Foundation & framing
Site prep, foundation pour, and full framing of walls, roof, and openings.
Timeline
2–3 weeks
- 06
MEP rough-in
All mechanical, electrical, plumbing rough-in, insulation, and inspections before drywall.
Timeline
1–2 weeks
- 07
Interior finish-out
Drywall, flooring, full kitchen, full bath, paint, trim, and exterior finishes.
Timeline
4–6 weeks
- 08
Final inspection & walkthrough
Final city inspection, punch list, and complete walkthrough with maintenance handoff.
Timeline
1 week
Total Timeline: Most ADU projects complete in 6–9 months, including permitting.
Service Areas
Proudly serving Chicago & surrounding suburbs.
We build ADUs across the city and the metro. If your municipality isn't listed, give us a call.
Chicago City
North & West Suburbs
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