How Paul Supports Your Case
Building Code Litigation Support

Reliable. Respected. Ready to Testify.

Paul Gaston bridges the gap between hands-on construction practice and legal precision. He identifies the code that governed the work, examines the records and the as-built conditions, and explains what the code required and what was built, in language attorneys, insurers, judges, and juries can follow. Every opinion is developed the same way whether he is retained by the plaintiff or the defense.
Building Code Compliance
Means of Egress
Fire-Rated Assemblies
Fire Doors
Firestopping
ADA Accessibility
Code Inspections
Reports & Testimony
Building Code Compliance
Means of Egress
Fire-Rated Assemblies
Fire Doors
Firestopping
ADA Accessibility
Code Inspections
Reports & Testimony
Representative Matters

Representative Building Code Matters

Our Track Record

At Chicago Building Code Expert, Paul Gaston combines more than 30 years of field-tested construction knowledge with disciplined, code-anchored analysis to deliver clear, defensible findings and testimony for building-code disputes in Chicago and Cook County, for plaintiff and defense counsel alike.

Trusted Experts

The Professionals Behind Every Case

Independent Building Code Analysis

Objective, code-anchored findings for plaintiff and defense counsel, helping legal teams resolve complex building-code disputes with clarity, credibility, and technical precision.

Chicago Building Code Expert Witness
Reports & Courtroom Testimony

From inspection and reporting through deposition, arbitration, and trial, Paul Gaston delivers work product and testimony grounded in the governing code and the documented conditions.

Evidence-Based Work

Field Documentation & Evidence

Have Questions?

Understanding Our Process: Key Building Code FAQs

With more than 30 years of construction and forensic experience, Paul Gaston helps attorneys and insurers clarify building-code claims with clear, unbiased reports and testimony for litigation and mediation.

Our working Hours: Monday – Friday, 8:00 AM to 7:00 PM CT

Typical response: Within one business day

What types of building code matters does Paul Gaston handle?

Paul focuses on building code compliance, means of egress and exit compliance, and fire-resistance-rated construction, including fire doors, opening protectives, firestopping, and penetrations. He also handles applicable-code and edition analysis, code-based site inspection and document review, quality-control and inspection-failure review, and the accessibility of built conditions.

What are Paul Gaston’s qualifications as a building code expert witness?

Paul is a licensed City of Chicago General Contractor and a Union Journeyman Carpenter (Carpenters Local 10, since 1989) with more than 30 years building and maintaining code-compliant work in commercial, municipal, healthcare, and retail facilities, including O’Hare International Airport. His opinions rest on that documented experience and on recognized codes and standards.

Can Paul serve as an expert in both Illinois state court and federal court?

Yes. Illinois state courts apply the Frye/Donaldson standard and the federal courts apply Daubert, and Paul’s experience-based, code-anchored methods are structured to meet both. Each opinion is tied to his license, his documented experience, and the specific code or standard that applies.

Do you take expedited or deadline-driven engagements?

Paul accepts time-sensitive matters when his schedule allows and will give a realistic timeline after a brief review of the records, deadlines, and any inspection needs. Rush availability is confirmed case by case so disclosure and discovery dates can be met.

What happens after I submit a consultation request?

Paul runs a conflict check, confirms the scope and the applicable jurisdiction, and discusses records, access, and timing before any substantive work begins. Once cleared, he outlines the engagement so counsel knows what to expect at each stage through report and testimony.

What are your working hours and typical response time?

The office operates Monday through Friday, 8:00 AM to 7:00 PM Central, and inquiries generally receive a response within one business day. Inspection scheduling and report timelines are set with retaining counsel around the case calendar.

Honest Expert Testimony

Expert Witness Integrity

Retained By

Attorneys & Firms Who Have Retained Paul Gaston

Retained by Plaintiff & Defense Counsel
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Morgan & MorganFor the People
Cohen, Salk & Hoffman, P.C.Attorneys at Law
Seth Shumaker, Esq.Attorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Roetzel & AndressAttorneys
Law Office of Debra CrystalAttorney at Law
Expert Witness Process

Case-to-Court Solution

01. Case Intake
Conflict check and initial review of the dispute, the jurisdiction, and your legal objectives to confirm Paul can accept the matter.
02.Scope Outline
Define the code questions at issue, the applicable code and edition, and the deliverables, so scope and expectations are clear.
03.Scheduling
Coordinate document access and any site inspection with counsel around the case calendar.
04.Inspection
Document the as-built conditions and records, and map each condition to the governing code, listing, or standard.
05. Reporting & Testimony
Deliver a written report, rebuttal review, and deposition, arbitration, or trial testimony grounded in the evidence.