Licensed Professional Engineers serving Chicago and the Chicagoland region — providing pe-stamped engineering to legalize unpermitted additions, conversions, and structures. with court-ready, PE-stamped reports.
Unpermitted additions, garage conversions, patio covers, decks, carports, and retaining walls are common across Chicago — and they surface at the worst times: during a home sale, a refinance, an insurance claim, or a code-enforcement notice. Our IL-licensed Professional Engineers inspect the existing work, document it with as-built drawings and structural calculations, specify any required upgrades, and prepare the PE-stamped engineering package that Illinois building departments typically require to close out an after-the-fact permit.
We serve the Loop, the Near North Side, the West Loop, and the South Side, and the greater Chicagoland region. Every report is PE-stamped, litigation-ready, and prepared for use in Illinois insurance claims and litigation.
As-Built Field Verification
On-site measurement and inspection of the existing unpermitted construction.
Structural Calculations & Drawings
PE-stamped as-built plans and calculations for permit submittal.
Engineer Letters & Certifications
Sealed letters addressing structural adequacy of existing work.
Code Violation & Red-Tag Resolution
Engineering remedies and retrofit details to resolve code-enforcement notices.
Additions, Conversions & ADUs
Room additions, garage conversions, accessory dwelling units, decks, and patio covers.
Real Estate Closing Support
Fast-turnaround documentation when unpermitted work stalls a sale or refinance.
We have engineers on the ground in Chicago — not just a license on file. Rapid site response, local code knowledge, and court-ready reports.
Licensed PE in IL
24–72 hour site response
Court-recognized expert testimony
Common questions from Chicago clients
In many cases, yes. Illinois building departments commonly accept PE-stamped as-built drawings, structural calculations, and an engineer's evaluation of existing work as part of an after-the-fact permit. We inspect the work, document it, specify any needed upgrades, and prepare the engineering package. Final permit approval is always made by the local building official.
Room additions, garage and attic conversions, accessory dwelling units, decks, balconies, patio covers, carports, removed or altered load-bearing walls, retaining walls, and commercial tenant improvements.
Not always. We start with a non-destructive inspection and only recommend limited openings when framing, connections, or footings cannot otherwise be verified.
Yes. Dr. Mir Emad Mousavi holds an active Professional Engineer license in Illinois, and our Chicago-based team understands IL building codes and local amendments. Our PE-stamped reports are accepted by Illinois courts and insurance carriers.
We typically deploy local engineers within 24-72 hours across the Chicagoland region, with same-day availability for urgent structural emergencies in Chicago.
Pricing depends on the scope of the investigation, site access, and reporting requirements. We offer confidential consultations to scope your matter and provide a clear fee estimate — call (833) 511-2542 to discuss your case.
Yes. Our Chicago team serves the Loop, the Near North Side, the West Loop, and the South Side, and the greater Chicagoland region.
Yes. Dr. Mousavi provides expert witness testimony and deposition support in Illinois state and federal courts, and our PE-stamped reports are litigation-ready.
Wind, water, hail, and structural storm damage investigation.
Foundation settlement, cracking, and structural distress investigation.
Building code compliance, workmanship, and defect investigation.
Structural fire damage assessment and safety evaluation.
Drainage failure, erosion, slope stability, and water intrusion.
Vehicle impact structural damage assessment.
Speak directly with a licensed forensic engineer about your after-the-fact permitting engineering matter in Chicago. All consultations are confidential.