How and Why Due Diligence is Changing
The due diligence period may be the most critical part of buying a restaurant. It can be the most stressful portion for both the buyer and restaurant seller. Meanwhile the landscape of offer and due diligence period has dramatically changed over the past decade. In most cases, due diligence has become shorter, while expectations of material to be provided have increased. Here’s why the process has changed and how buyers should navigate due diligence in today’s restaurant buying climate.
Many first-time restaurant buyers spend months at the start of the process. They use the We Sell Restaurants assessment tool to determine the best restaurant for them. They prequalify with our many restaurant financing options, and even research multiple options on our powerhouse restaurant for sale website. Which restaurant, at what price, with what terms, are all considerations in the process. Then the offer is submitted and there's a moment of real excitement. This deal IS real, the business is yours to pursue, the next chapter is beginning.
And then the questions start. What happens now? Who does what? What should you be requesting? What does "due diligence" mean in practice? How long does this take, and what happens if you find something you don't like? That’s the due diligence period and it has rapidly evolved, over the past 25 years We Sell Restaurants has been operating.
The due diligence window is the period between a signed agreement and an agreed upon date with the seller defined in the contract. It can range from as short as ten days to as much as 30 days, depending on the complexity of the business. The trend in the last decade has been toward a shorter due diligence period for three reasons.
Why is the Due Diligence period so Critical?
For most buyers, due diligence is the most information-dense, decision-intensive period of the entire acquisition process. It’s when you confirm that what you're buying is what you think you're buying, or you discover something that changes the deal.
What the due diligence period is not used for is to determine lending qualification. For We Sell Restaurants, that is always a separate contingency, unrelated to due diligence, which means a buyer may progress positively through due diligence while the bank will not lend for reasons related to their cash flow review. With separate clauses in the agreement for both due diligence and lending approval, a buyer is has multiple layers of protection during the period between signature and closing so the deal may terminate without any risk to escrow funds.
Here's what actually happens during that window, who's responsible for what, and how to use the time well, along with why there’s been a dramatic shift in due diligence. But first, AI and its role in contract negotiations and due diligence.
The Use of AI in the Contract and Due Diligence
Artificial intelligence has become a valuable tool when researching a business, organizing financial information, or identifying questions to ask during the buying process. However, one area where buyers should exercise caution is using AI as a substitute for experienced legal counsel or an experienced Certified Restaurant Broker during contract negotiations.
In one recent transaction, a buyer repeatedly stated that "his attorney" had reviewed the Asset Purchase Agreement and recommended numerous revisions. Yet throughout the negotiation, the attorney was never copied on a single email or included in any discussion. Instead, revised language kept arriving, making continual updates to the agreement, one change at a time.
As negotiations progressed, it became increasingly apparent that the buyer was not working from legal advice at all. The revisions appeared to be generated by ChatGPT or another AI platform. The “attorney” never emailed directly, never engaged with the restaurant broker or submitted anything under his own name. Every change came directly from the buyer.
Ironically, many of the proposed changes did not strengthen the buyer's position. In several cases, they actually removed protections or shifted financial responsibility to the buyer. Because the buyer insisted the revisions came from legal counsel, the broker could not simply dismiss them without appearing to interfere with attorney-client advice.
If you upload a contract or otherwise tell an AI model you are using it for legal advice, it will warn you to seek actual legal advice. In this instance, the buyer appeared to ignore that warning.
When the closing documents were issued, the buyer expressed surprise over several expenses shown on the settlement statement. The broker had to explain that those costs resulted directly from the provisions the buyer had insisted on adding during negotiations from his “attorney.” What the buyer thought was expert legal advice had ultimately cost him money.
In another transaction, a buyer claimed an attorney had reviewed the purchase agreement before returning extensive revisions. The final document contained multiple inconsistencies that a experienced attorney would never suggest. For example, the agreement required closing within 30 days while extending due diligence to 45 days, creating an impossible timeline where the buyer could continue investigating the business after the transaction was scheduled to close. Basic conflicts like these create confusion, delay transactions, and often require significant rewriting before the parties can proceed.
The same issue is becoming increasingly common during due diligence.
AI can generate impressive looking checklists, but it cannot replace the judgment that comes from completing hundreds of restaurant transactions. Certified Restaurant Brokers understand which requests are appropriate for a particular transaction and which simply create unnecessary work without reducing risk.
It is not unusual for a broker to receive a five or six page due diligence request for a restaurant selling for $90,000. Many of these requests appear to be copied directly from AI-generated templates designed for mergers and acquisitions involving multi-million dollar companies.
When working with buyers, we ask them to simply think about what it is they want to confirm or know during due diligence.
For example, an AI-generated checklist may request proof that every piece of equipment has been paid for, including receipts dating back years. In reality, the closing attorney will perform lien searches to verify that the assets are free of claims. Receipts from years ago rarely provide meaningful protection to the buyer.
AI also struggles to distinguish between different types of acquisitions.
If you are purchasing a profitable, operating restaurant for its cash flow, historical sales, expenses, and operating performance are critical. If you are buying an asset sale solely to convert the location into an entirely different concept, those financial results may have little relevance. A failing sushi restaurant tells you very little about the future performance of a sandwich shop operating from the same location. In that case, the condition of the equipment, the lease terms, occupancy costs, utility expenses, and the suitability of the location become far more important than the seller's historical food costs or menu mix.
Experienced brokers tailor due diligence to the transaction. AI generates generalized lists.
That distinction matters.
Sellers also evaluate buyers throughout the process. When a seller receives a 14-page due diligence request for a straightforward $90,000 asset sale, they may conclude that the buyer will be difficult to work with or unlikely to close. Rather than investing weeks responding to unnecessary requests, many sellers simply move on to the next offer.
A well-prepared buyer asks thoughtful questions that fit the size, structure, and risk of the transaction. AI can certainly help generate ideas and identify issues worth exploring. However, it should be viewed as a starting point, not the final authority.
The best transactions occur when buyers combine modern technology with experienced professionals, including a Certified Restaurant Broker, qualified legal counsel, lenders, accountants, and closing attorneys. AI is a powerful assistant, but it cannot be relied upon as a replacement for practical experience, sound judgment, or professional advice earned through hundreds of successful restaurant transactions.
What to Do When You Find Something
You will find something during due diligence. Every transaction does. The question isn't whether an issue will surface, it’s whether it is deal changing and the appropriate response.
Not every discovery is a renegotiation event. A piece of aging equipment that will need replacement in two years is a known capital cost that a reasonable buyer prices into their offer, not a reason to reopen price. A single health code violation that was corrected immediately is not the same as a pattern of recurring violations. An add-back that can't be fully documented to the dollar is not the same as evidence of revenue inflation.
The framework for evaluating what you find is this: does it materially change the economics of the transaction, or does it change the risk profile in a way that affects what you're willing to pay? If yes, it's a legitimate basis for renegotiation. If no, it's information that completes your picture of the business without changing the deal.
When a discovery is genuinely material to the deal. This may include, revenue that doesn't reconcile, a lease problem that affects financing, equipment in worse condition than represented, a key employee who is leaving, work with your Certified Restaurant Broker directly, never the seller. Understand what it actually means for the deal, what your options are, and how to raise it in a way that leads toward a resolution rather than a confrontation.
Some discoveries are dealbreakers. That's what the due diligence period is for. A buyer who walks from a deal because the financials don't hold up is doing exactly what the process is designed to allow. The goal isn't to close every deal. The goal is to close the right ones.
Having someone in your corner who has been through it hundreds of times, who knows which red flags are serious and which are routine, who knows when a landlord is following a process and when they're obstructing one, who knows how to keep the deal moving when the various parties are pulling in different directions, changes the outcome in ways that are real and significant.
At We Sell Restaurants, that's what our Certified Restaurant Brokers do on every transaction we facilitate, on behalf of every buyer we work with.
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We Sell Restaurants is the nation's largest restaurant brokerage, specializing exclusively in restaurant sales, acquisitions, and franchise resales. Our Certified Restaurant Brokers guide buyers through every stage of the acquisition process, from first inquiry to funded close.