How contractors are using AI to read contracts faster

Reading subcontracts and vendor agreements is one of those jobs that always gets less time than it deserves. A 60-page agreement lands on a Friday, someone skims it, and it gets signed. That's how you end up with an indemnity clause that costs you three times what the job was worth.

What happened

Over the last few months, a clear pattern has emerged among small business owners using AI tools like ChatGPT and Claude for document review. The use case isn't complicated: upload the contract, ask the tool to find specific clause types, quote the exact language, and flag anything that looks non-standard. ZDNET ran a piece this month covering how contractors are using these tools to review vendor contracts and catch version differences between drafts, work that used to mean either paying a lawyer or hoping nothing slipped through.

The one caveat worth knowing: these tools can miss things, particularly in very long documents where context gets thin near the end. The fix is simple, ask the tool to quote the exact text it found rather than paraphrase it. If it can't produce the verbatim language, it may be guessing. That one habit catches most of the errors.

Why it matters for your shop

For a $10M general contractor or a specialty sub, the contracts that actually bite you aren't usually the prime contract, those get reviewed. It's the supplier agreements, the equipment rental terms, and the second-tier sub agreements that get waved through. The ones with net-60 payment terms buried in paragraph 14, or a warranty clause that makes you responsible for consequential damages.

Uploading one of those documents to Claude or ChatGPT and asking "what are the payment terms, the indemnity obligations, and anything here that's unusual for a standard trade subcontract" takes about four minutes. It won't replace a construction lawyer for a complex deal, but it will catch the obvious stuff that currently gets missed because nobody had time.

This also works for comparing versions. If a GC sends you a revised rider and says "minor changes only," you can upload both versions and ask what changed. That's a ten-second check that used to require side-by-side reading.

One thing to try this week

Find the last vendor agreement or subcontract you signed without a full read-through. Upload it to Claude or ChatGPT and ask: "Summarise the payment terms, any indemnity obligations on my part, and flag any clauses that seem unusual for a standard construction trade agreement. Quote the exact text for each one you flag." See what it surfaces. If anything looks off, forward it to your lawyer with a specific question rather than asking them to read the whole thing, that alone saves you an hour of billable time.

Source: https://www.zdnet.com/article/chatgpt-work-small-business-use-cases