Due Diligence Checklist: 27 Things Every Buyer Should Verify Before Purchasing a Veterinary Practice

Most buyers lose money before they ever close. Not at the negotiating table — in the six weeks before it, when something surfaces during due diligence that nobody caught because nobody looked carefully enough.
Veterinary practice acquisition is one of the most consequential financial decisions a veterinarian makes, and it’s also one where the gap between what’s presented and what’s real can be significant. Practicing brokers who’ve worked both sides of this transaction consistently say the same thing: buyers who rush due diligence either overpay or inherit problems they didn’t budget for—usually both.
This checklist exists to close that gap. It’s not exhaustive for every deal, but working through all 27 items before making an offer means you’re evaluating what you’re actually buying—not just what you’ve been shown.

Financial Verification: Where the Real Story Hides:
The financials are where most buyers spend the most time and where the most consequential discoveries happen. Work through these seven items in order—they build on each other.

  1. Three years of profit and loss statements. Revenue consistency matters more than a single strong year. One great year bracketed by two flat ones tells a completely different story than three years of steady growth. Ask what drove the outlier.
  2. Three years of business tax returns. Cross-reference these against the P&Ls. Discrepancies between what a practice reports to the IRS and what it shows internally aren’t always innocent. Ask for an explanation before you ask for anything else.
  3. Owner add-backs. Sellers routinely run personal expenses through the practice: vehicle payments, personal insurance, family members on the payroll, and travel. Removing these gives you the adjusted EBITDA — the number that should drive your offer, not the headline revenue figure. According to Q4 2025 data from the Ackerman Group, most general practices sell at 8 to 15 times adjusted EBITDA. Know where you sit in that range before you negotiate.
  4. EBITDA normalization. Strip the add-backs. Strip the one-time expenses. What remains is the practice’s real operating profitability. That number and the asking price need to have a relationship you can defend in writing.
  5. Accounts receivable aging. Receivables beyond 90 days rarely collect. That affects what the revenue figure actually represents.
  6. Revenue concentration. If more than 30% of revenue traces to one service line, one referring relationship, or one doctor, model the practice without that variable. If the model doesn’t work, neither does the price.
  7. Payroll records. Verify actual compensation against what’s reported. Undisclosed compensation and phantom employees appear here more often than buyers expect.

    Operational Verification: What the Financials Don’t Show:

  1. Client retention rate. A healthy general practice retains 70% or more of active clients year over year. Below that, the question isn’t just what happened—it’s whether the cause is fixable or baked in.
  2. New client acquisition rate. Flat revenue with declining new clients almost always means someone raised prices to compensate for attrition. That approach has a ceiling, and buyers who miss it inherit it.
  3. Average transaction value. Divide annual revenue by total transaction count over three years. Rising ATV against falling visit volume is a pattern worth understanding before you commit to anything.
  4. Staff tenure. Long-tenured teams are a client retention asset that doesn’t appear anywhere in the financials. Clients follow people. A team that’s been in place five or more years represents real relationship capital. Turnover tells the opposite story.
  5. Doctor production split. If the selling doctor personally generates 60% or more of revenue, build a realistic year-one projection with that doctor at reduced capacity. The number may change your offer significantly.
  6. Appointment utilization rate. A practice running near capacity has limited room for growth without adding staff or hours. Understand what you’re actually buying—the practice as it is, not the practice as it could theoretically become.

Buying a vet clinic

Legal Review: The Category That Kills the Most Deals:

  1. Lease assignment clause. More acquisitions die here than anywhere else in the process. The lease must contain an assignment clause that allows transfer to a new owner—and most SBA lenders require at least 10 years of remaining term, including renewals, before they’ll underwrite the deal. A landlord who won’t cooperate on assignments has ended otherwise clean transactions. Have this conversation at the start of due diligence, not at the end of it.
  2. Remaining lease term. Short leases without strong renewal options create lender risk and leverage for the landlord post-close. Know exactly what you’re inheriting.
  3. Vendor and supplier contracts. Look for auto-renewal clauses and early termination penalties. Unfavorable long-term contracts that transfer with the sale are sometimes the reason the practice is being sold.
  4. Malpractice and complaint history. Request a five-year claim history. Recurring complaints around specific procedures or specific staff members are patterns. Treat them as such.
  5. Employment agreements. Existing non-competes, associate agreements, and retention arrangements that survive the sale bind you, not just the seller. Read every one before closing.
  6. Regulatory compliance. Confirm current DEA registration, controlled substance logs, and state veterinary board standing. Compliance issues that predate your ownership can follow you regardless of when they started.

    Physical Inspection: What a Walkthrough Actually Tells You:

Buying a vet clinic without a thorough physical inspection is like buying a house without a home inspector—technically possible and consistently regretted.

  1. Equipment service records. Anesthesia machines, autoclaves, digital radiography units, and dental equipment all leave paper trails. Missing records rarely mean the equipment was maintained. They usually mean it wasn’t—and the cost of catching up becomes yours.
  2. HVAC and building systems. HVAC failure in a clinical setting is a patient safety event. Ask about service history and remaining useful life. Get specifics, not approximations.
  3. IT systems and practice management software. Is the software current, properly licensed, and compatible with how you plan to run the practice? Migration costs are routinely underestimated. The downtime that comes with them costs clients.
  4. Facility code compliance. If you plan to expand services, confirm the facility can support it. A building that barely meets current code may require substantial investment before it can do anything more.

    Cultural Fit: The Category Most Buyers Skip—and Regret:

Veterinary practice buyers who skip cultural assessment and then wonder why client retention fell in the first year consistently name this as the evaluation they’d do differently.

  1. Online reputation trajectory. Don’t look at the current rating in isolation. Pull the trend across 18 months. A practice sitting at 4.5 stars that was at 4.9 eighteen months ago is signaling that something shifted—and the financials haven’t absorbed it yet.
  2. Community relationships. Is the selling doctor genuinely embedded in the community through referral relationships, local organizations, or long-standing client friendships? That goodwill either transfers with a thoughtful transition or evaporates at closing. Know which one you’re buying before you sign.
  3. Staff dynamics—beyond the walkthrough. Spend real time with the team, not a five-minute introduction during a showing. Ask simple questions: How long have you been here? What does a strong week look like? What would you change? A team that answers with candor is different from one that’s been coached. You can tell the difference.
  4. Client demographic profile. Who are the clients, specifically—age distribution, pet type, household income range, and geographic concentration? A practice built around a demographic that’s aging out or economically constrained carries a different risk profile than one serving a growing neighborhood with young families and new pets.

Frequently Asked Questions:

FAQ 1. How long should veterinary practice due diligence take?
For a well-prepared buyer with organized seller documentation, 30 to 45 days is standard. Deals with lease complications, inconsistent financials, or equipment concerns often need 60 days or more. Rushing to meet an arbitrary deadline consistently produces worse outcomes than taking the time the process actually requires.

FAQ 2. Can I renegotiate the purchase price based on due diligence findings?
Yes, and experienced buyers do it regularly. Findings that materially affect the practice’s value—deferred maintenance, unexpected client attrition, lease problems, or normalized EBITDA that differs from the seller’s presentation—are legitimate grounds for renegotiating both price and deal terms. Document your findings clearly. Opinion doesn’t move a seller. Evidence does.

FAQ 3. What is the most commonly missed item in veterinary due diligence?
Lease assignment. Buyers consistently focus on financials and treat the lease as a detail to handle later. It isn’t. An uncooperative landlord, a missing assignment clause, or an insufficient remaining term for SBA financing requirements has ended more transactions than any financial issue—usually after the buyer has already spent weeks and significant money on every other part of the process. Check the lease early.

 

Final Thoughts:

No checklist covers every practice. Deals have details that don’t fit neatly into categories, and every seller presents their practice in the most favorable light available to them. What these 27 items give you is a framework for asking the right questions before you’re legally committed to the answers. Veterinary practices for sale in 2026 are moving faster in competitive markets than they were a few years ago—which makes compressing due diligence feel reasonable. It isn’t. The problems you find during this process are ones you can negotiate around, price into the offer, or walk away from. The ones you don’t find come out of your own pocket. Resist the urgency. Do the work.
If you want a buyer’s advocate who treats due diligence as a genuine evaluation rather than a procedural box to check, VSC’s buyer representative services are built specifically for this kind of acquisition work.