Our Track Record

At Chicago Building Code Expert, Paul Gaston pairs 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.

Professional Background

Paul Gaston is a Chicago building code expert witness and a licensed City of Chicago General Contractor with more than 30 years of construction and facilities experience. He evaluates building code compliance, means of egress, and fire-resistance-rated construction against the code that governed the work, and provides reports and testimony for plaintiff and defense counsel across Chicago and Cook County.

Paul has spent his career building and maintaining code-compliant work in demanding, occupied environments. As a General Foreman with the City of Chicago Department of Aviation at O'Hare International Airport, he has directed renovation, maintenance, and construction across terminals and public spaces for more than 15 years, leading over 25 skilled trades professionals in carpentry, flooring, and finish work while keeping facilities operational and code-compliant.

A Union Journeyman Carpenter with Carpenters Local 10 since 1989, Paul has also supervised work for the City of Chicago Department of General Services and managed commercial, healthcare, and retail projects. That hands-on record is the foundation of his expert work: he identifies the code that governed a project, examines the records and the as-built conditions, and explains what the code required and what was built, in terms a court can follow.

He is retained by plaintiff and defense counsel alike, and his methodology does not change with the side that hires him. Every opinion is tied to his license, his documented experience, and the specific code, listing, or standard that applies, which is what keeps his findings useful in negotiation and durable under cross-examination.

Expertise You Can Trust

Your Dispute, Our Focus

Paul delivers focused building-code analysis, resolving disputes with clarity, code compliance, and court-ready documentation across Chicago and Cook County, for both plaintiff and defense.

A prompt, realistic assessment of the records, the deadlines, and the work involved.

Building code compliance, means of egress, and fire-resistance-rated construction.

Findings tied to the applicable code, product listings, and recognized standards.

Report-Ready Documentation

Clear, Report-Ready Documentation

Paul produces clear, well-documented reports that attorneys and insurers can rely on, tying each finding to the governing code, the records, and the as-built conditions.
Building Code Compliance
Means of Egress
Fire-Rated Assemblies
Fire Doors
Firestopping
Building Code Compliance
Means of Egress
Fire-Rated Assemblies
Fire Doors
Firestopping
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
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.

About Paul Gaston: Common Questions

Why did Paul Gaston move from construction management into expert witness work?

After decades building and maintaining code-compliant work in demanding, occupied facilities, Paul saw how often disputes turned on how the work was actually built versus what the code required. Expert witness work lets him apply that field knowledge to help courts and counsel resolve those questions with documented, code-based analysis.

What building types and environments has Paul Gaston worked in?

Paul has led construction, renovation, and facilities work across commercial, municipal, healthcare, and retail settings, including large public spaces at O'Hare International Airport. That range gives him direct familiarity with occupancy conditions, egress paths, and rated construction across very different building types.

Has Paul Gaston testified at deposition, arbitration, and trial?

Yes. Paul has been retained and has provided site inspections, written reports, deposition testimony, arbitration testimony, and trial testimony in construction matters. A current case list and fee schedule are available to counsel on request.

How does Paul keep his opinions independent and fact-based?

Paul applies the same method regardless of who retains him: identify the governing code, examine the records and the as-built conditions, and report what the evidence supports. He ties each opinion to a code section, listing, or standard rather than to the outcome a party would prefer.

How does Paul stay current with evolving building codes and standards?

Paul works from the code edition and amendments that governed the project at issue and confirms the applicable requirements for each matter and jurisdiction. Because he came up through the trades and licensed contracting, he tracks how adopted codes and referenced standards change over successive adoption cycles.