AI for Plan Review
Smarter, Faster Code Checks Without the Guesswork
Rahul Bajaj, PE, MCP, is the Associate Director of Modular Plan Review, Central Region, at PFS TECO.
Everyone’s Talking About AI — Here’s What It Can Really Do for Plan Reviewers
You’ve probably heard the buzz — AI is everywhere. Tools like ChatGPT, Claude, DeepSeek, and Google Gemini are being used for everything from writing emails to passing law exams. It seems like everyone is jumping on the AI train. But what can these tools really do for professionals in modular construction and plan review? Let’s break down how AI can be a powerful assistant — cutting down hours of code research, helping you prep for certification exams, and even expanding your understanding of the codes you work with every day.
AI: What It Is and Why It Matters
AI tools like ChatGPT and Claude are examples of what’s called “large language models” (LLMs). In simple terms, they’re trained on a massive amount of text from books, websites, and documents. They use this information to answer questions, summarize documents, and help generate ideas. Think of them as supercharged search engines that can talk back. The more specific your question, the more useful and relevant the answer can be.
How AI Helps with Code Compliance
Let’s say you come across something unfamiliar in a plan — this morning, for example, I reviewed a building with optional solar panels. I didn’t know which NEC sections applied off the top of my head. Rather than digging through the entire NEC table of contents, I asked AI:
Example prompt: “Which NEC 2020 sections apply to solar panel installation on modular buildings?”
Within seconds, it pointed me toward relevant sections like Article 690 (Solar Photovoltaic Systems) AI for Plan Review and gave me key concepts to look out for. I still reviewed the codebook myself — but AI saved me 30-60 minutes by showing me where to start.
AI Dos and Don’ts
Do: Use AI to Train Yourself and Your Team
Preparing for code certification exams? AI can quiz you.
Example prompt: “Write 120 multiple choice questions with answers based on 2021 IBC for the ICC Building Plans Examiner test. Make it a 2-hour exam format.”
You can use similar prompts for the IAPMO tests or state-specific exams like Wisconsin’s UDC Certification. You can even fine-tune the difficulty: “Make half the questions easy, a quarter medium, and a quarter hard.”
Don’t: Use AI to Skip the Code Book
AI is not a replacement for reading the code. It can be a shortcut to knowing what part of the code to read. If you’re citing something in your review comment or correction notice, verify it against the actual code language.
Do: Ask for Example Prompts Before You Use AI
Try these prompts:
- “What are the egress requirements for a modular dorm building under 2021 IBC?”
- “Give me a summary of key IECC 2015 requirements for factory-built buildings.”
- “How do I check compliance for ADA reach ranges inside a restroom module?”
Don’t: Upload Client Plans to Public AI Tools
Never copy-paste client plans, PDF files, or proprietary project info into ChatGPT, Gemini, or any other free/public AI tool. These tools do store your data and may be used to train future models.
Do: Talk to Your Company About Enterprise AI Access
If you’re serious about using AI at work, push your company to get an enterprise license. Enterprise versions (like ChatGPT Enterprise or Microsoft Copilot) offer data privacy and encryption.
Don’t: Trust AI Blindly
AI sometimes “hallucinates” and gives wrong answers. Always cross-check with the code. Treat AI like a junior coworker who’s fast but not always right.
Do: Use AI to Translate Code into Plain English
Not sure how to explain a code section to a client or team? Ask AI to paraphrase it in simpler language.
Example prompt: “Explain IBC 1010.1.1 in plain English for a non-engineer.”
Don’t: Assume AI Knows Local Amendments
AI tools often don’t include state or jurisdiction-specific amendments unless you provide them. Always double-check with your AHJ or local code supplements.
Do: Use AI to Translate Code into Plain English
Trying to understand what’s changed between 2015 and 2021 IBC? Ask AI to show you a comparison.
Example prompt: “Compare stairway requirements between 2015 IBC and 2021 IBC.”
Don’t: Use AI During Secure Exams
If you’re taking an online or in-person certification test, do not use AI or any external help. It’s unethical and could result in permanent disqualification.
Do: Log Prompts That Work Well
If a prompt gives a great answer, save it in a personal reference doc. Over time, you’ll build a library of prompts that improve your speed and quality.
Don’t: Use AI Output as Legal Code Interpretation
AI can summarize, compare, and guide — but it cannot interpret the law or code in an enforceable way. Always defer to the adopted code text and AHJ interpretations.
AI sometimes “hallucinates” and gives wrong answers. Always cross-check with the code. Think of it like an intern — fast, tireless, but not licensed. Use it to get started, not to finish your work.
AI for Managers, Not Just Reviewers
AI isn’t just helpful for individual plan reviewers — it’s also a valuable tool for managers overseeing review teams. You can use AI to:
- Create standardized checklists to improve consistency across reviewers
- Quickly train new hires with AI-generated quizzes and study guides
- Summarize complex code updates or memos into bullet points for your team
- Draft internal SOPs or review templates based on codebooks
Example prompt: “Write a standard operating procedure for reviewing factory-built restroom modules under 2021 IBC, IPC, and 2012 TAS.”
Extra Tip: Use AI to Summarize Lengthy Memos. Got a dense memo from the state AHJ or a long code update? Drop it in AI (if it’s not sensitive information) and ask: “Summarize this in bullet points in plain English.”
Outlook
AI tools are improving quickly. Already, some plug into BIM or CAD programs to check plans directly against code logic. Eventually, you might see plugins that pre-check submittals for local jurisdictional rules or that keep up with code updates in real time. As these tools evolve, modular professionals — especially those in plan review — stand to benefit the most, because our work is repetitive, rule-based, and data-heavy.
Final Thoughts
AI is here to stay — and it’s only getting better. It can’t replace your experience, judgment, or license. But it can save you time, make you more consistent, and help you level up faster. Think of it as a sidekick — not a threat.
More from Modular Advantage
Homes as Essential Infrastructure
The housing crisis is nothing new. Across the world, federal, state, and municipal governments of all sizes are struggling with how to provide more affordable housing—quickly—to those who need it. In Canada, Paul Halucha, Deputy Minister of Housing, Infrastructure, and Communities Canada (HICC), argues that the federal role in housing has shifted from funding at arm’s length to actively shaping outcomes.
Building the Future, Offsite
In the face of a national housing crisis, England stands at a critical inflection point where innovation, scale, and public-private partnerships must converge to meet an urgent need: more homes, and fast. Homes England is helping reshape the housing market by actively supporting MMC through a strategic blend of land development, financing, and grants.
How POJI and MOKO Are Industrializing Modular Construction Through Automated Engineering Systems
Working with Scandinavian Industrialized Building System (SIBS), POJI and MOKO helped realize a modular city concept located in Järfälla municipality of Stockholm, Sweden, with 350 apartments, communal areas, restaurants, small shops, and a preschool in a pleasant mix with experiential architecture and greenery.
Inside Boutique Modern’s Mission to Make First Homes Affordable and Efficient in The U.K.
The U.K.-based firm has been in business for 12 years, manufacturing houses for both private clients and local government, with a large chunk of its business coming from “affordable” and social housing. Working in a 32,000 square-foot factory in Newhaven, Sussex, Boutique Modern is changing decades-old thinking about constructing houses, all through the use of modular.
BoulderMOD: Producing Affordable Modular Homes While Training the Workforce of the Future
Colorado has been hit with a double whammy—a decline in the number of skilled construction workers and an increased need for affordable housing. BoulderMOD, a partnership among the city of Boulder, Flatirons Habitat for Humanity, and Boulder Valley School District, is tackling both problems and helping others do the same.
Guerdon: Seeking the ‘Holy Grail’ of Modular Construction
Guerdon, a modular manufacturer in Boise, Idaho, recently won what Laurence (Lad) Dawson, CEO and Managing Partner, describes as the ‘holy grail’ for a modular manufacturer. The RFP calls for a pipeline of six projects, totaling approximately 570
units.
State of Modular in 2025: Facing Reality
The critical and urgent reality is that the modular industry needs to open the doors to collaboration across all sectors. The sooner we stare down these challenges, the sooner we can welcome a new reality where modular is the dominant way to deliver housing for better performance, quality and all at a lower cost.
Modular Multifamily Housing as a Scalable Solution to the Housing Crisis
GreenStaxx provides a real-world, scalable solution through its standardized library of modular-ready multifamily designs and its innovative triple-decker model. Together, these offerings address the industry’s two greatest needs: efficiency and adaptability. By focusing on quality, repeatability, and collaboration, GreenStaxx is helping move modular construction from niche to mainstream and offering a practical path toward solving the housing shortage.
Sealed for Success: The Role of Waterproofing in Modular Construction
Water is one of the biggest threats to any building, causing structural damage, mold growth, and costly repairs if not properly managed. Waterproofing is the first line of defense, ensuring durability and long-term performance. As construction methods evolve, so do waterproofing solutions – moving beyond traditional coatings to advanced, factory-ready systems.
From Volume to Velocity: Scaling Multi-Family Projects Without Losing Control
When projects grow too fast without the right systems, factories run into problems. They miss deadlines, crews burn out, and quality drops. Instead of steady progress, chaos takes over. Things slow down, even with more units going through. That’s because building more isn’t enough—you also need to build smarter. That means shifting focus from volume to velocity.