What belongs on a manufacturing due diligence checklist before exclusivity?
Buying a manufacturing business already told you to write a buybox. This page is what you put in the data room after the teaser survives. The evaluation page is the kill-sheet. The checklist is the inventory of requests.
Room 1 — financial truth
- Three years of business tax returns and compiled or reviewed financials
- Internal P&L and balance sheet, monthly, for the same years plus YTD versus prior
- Job-cost extracts: won-job margin versus actual, by customer and by cell
- Bank statements that tie to the recast
- Add-back schedule with documents under every line
- AR and AP aging, with related-party and intercompany flagged
- Classed inventory: raw, WIP, finished, consigned, customer-owned, with age
- Sample working-capital peg calculation using the method you want in the LOI
If tax, P&L, and job-cost tell three religions, stop adding rooms. Order a quality of earnings or walk. Commonly expect a buyer-paid QoE once EBITDA is large enough that lenders or investors require it — often around ~$2 million+, sooner if the add-backs are loud.
Census CBP 2023 counted 284,452 manufacturing establishments; 68.4% have fewer than 20 employees (Source: Census CBP). Small shops often run QuickBooks plus a whiteboard. That is a diligence fact. It changes QoE cost and working-capital trust. It is not a moral failure.
Room 2 — iron, liens, and the building
- Machine or process list: make, model, year, control, serial, hours/cycles, owned versus leased, lienholder, last rebuild, in-capacity versus spare
- UCC search and lease files
- Maintenance logs, crash history, calibration certificates for CMM and gages
- Qualified M&E appraisal scoped for FMV, OLV, and FLV
- Facility: lease, title, surveys, tax bills, trailing-12 utilities
- Capex history and the deferred list the seller did not want to type
SBA and conventional lenders both ask for a qualified appraisal on a manufacturing change of ownership. SBA 7(a) still caps at $5 million with a 10% injection under SOP 50 10 8 (Source: SBA). The checklist does not change because the loan product changed. The credit committee still wants serial numbers.
| Checklist room | Core documents | Specialist who owns the read |
|---|---|---|
| Financial | Tax, P&L, job-cost, aging, inventory | CPA / QoE firm |
| Iron and plant | Machine list, UCC, appraisal, lease or title | M&E appraiser; RE broker if dirt transfers |
| Commercial | Concentration, backlog, LTAs, scorecards | You and counsel |
| Quality | Certificates, last CB audit, NCR aging | Quality consultant if the cert is the moat |
| Environmental | Phase I, permits, manifests, tanks | Environmental Professional |
| Labor | Org chart, I-9 sample, OSHA 300, CBA | Employment counsel |
| Regulatory | ITAR, EAR, FAR novation, FDA/USDA | Export / gov-con counsel |
| Tax structure | Draft 8594 thinking, entity charts | CPA — not this page |
Room 3 — commercial and quality
- Customer concentration, trailing 12 and 36 months, including related entities that are really one customer
- Backlog: firm PO versus forecast versus LTA, with cancel-for-convenience flagged
- On-time delivery and past-due backlog
- Customer scorecards and open complaints
- Certificate pack: ISO 9001, AS9100, ISO 13485, IATF 16949, SQF/BRC — date, CB, last audit, open majors
- Quality-certification diligence is the deeper read. The checklist item is "is it live, and can it transfer."
A lapsed certificate is a customer-access problem. It is not paperwork.
Room 4 — people
- Org chart with tenure and who can run each cell
- Key-person map: quoting, programming, second shift, customer hold
- Payroll register versus the recast
- I-9 files and a statement on how they are kept
- OSHA 300 logs and any repeat citations
- CBA, multiemployer plan, and a withdrawal-liability estimate
- Planned headcount change: Federal WARN (29 U.S.C. § 2101) generally 100+ full-time employees and 60 days. Mini-WARN is state-specific. Counsel item.
BLS OEWS May 2025: machinist median $58,750; welder median $53,750 (Source: BLS OEWS). Use the register, not a national median, to test add-backs.
Room 5 — environmental and permits
- Existing Phase I, if any, and its date. AAI components generally stale after 180 days; a full new Phase I after one year.
- Tank lists, waste codes, generator status, air permit class, SWPPP, pretreatment permits
- Phase I and II is the long form. The checklist item is "do not close industrial dirt on a shrug."
Room 6 — contracts, export, tax
- Customer and supplier contracts; change-of-control clauses
- Government contracts: FAR 42.12 novation path; set-aside status that may die
- ITAR / EAR: registration, technical data, foreign employees. Foreign-person control of a registrant needs 60-day DDTC notice under ITAR § 122.4(b) (Source: DDTC)
- Insurance binders and claims history
- Entity charts and a reminder that Form 8594 / IRC § 1060 allocation is a CPA fight on Class V versus Class VI/VII
Put payer, timing, and exclusivity slip rules for QoE, appraisal, and Phase I in the letter of intent. A checklist without those rules becomes a hostage letter.
IBBA Q1 2026: 83% of deals over $5 million drew three or more offers (Source: IBBA). A complete first-room drop is how you stay in a competitive process without looking like a tourist. BizBuySell 2025 manufacturing median close was 223 days (Source: BizBuySell). The list is long because the asset is a plant, not a locker of laptops.
How to stage the room so you do not announce a sale
First drop: financials, tax, aging, classed inventory, machine list, certificate dates, lease or title. No customer names. No employee SSNs. No fixture photos. Second drop after the first pass survives: concentration without names if needed (Account A/B/C), backlog classes, quality pack, org chart. Third drop after LOI: names, portals, customer calls on a script, specialist visits.
A seller who dumps the entire customer list in week one is either naive or shopping a rumor. A buyer who demands it in week one is a leak risk. HedgeStone will not run that process. Census CBP's 68.4% small-establishment share (Source: Census CBP) means one email can reach the whole floor.
Data-room hygiene is diligence. Version control on the machine list matters. A list that changes serials every week is a finding. So is a financial pack that "updates" without a bridge.
What "done" looks like before you waive a condition
Financial room done: tax, P&L, and job-cost either reconcile or the QoE is scoped to reconstruct them. Iron room done: UCC matched, appraisal scoped, deferred capex listed. Inventory room done: sample ugly or clean, peg method written. Labor room done: four names, I-9 sample, OSHA 300, CBA if any. Quality room done: live certs or a funded recert. Environmental room done: Phase I in clock or a written reason it is not required. Contracts room done: novation / ITAR / change-of-control owners named.
SBA 7(a) still caps at $5 million with a 10% injection (Source: SBA). The credit file will ask for most of this list. Combined 7(a)+504 can reach $10 million (Source: SBA). It does not shrink the list.
Do not waive environmental because you are tired. Do not waive the physical because the seller is tired. Do not waive lien releases because the lender is tired. IBBA's 83% three-offer statistic (Source: IBBA) is not a reason to waive. It is a reason to be complete enough to stay in the process without looking reckless.
Stanford's $16 million / 6.2x / ~25% margin median (Source: Stanford GSB) is a search-fund profile, never a job-shop multiple, and never a shorter checklist. Main Street 2.75x SDE files (Source: BizBuySell via Iconic) use the same rooms with fewer binders.
A one-week first-room sprint
Monday: tax and financials. Tuesday: aging and inventory classes. Wednesday: machine list and UCC request. Thursday: certificate dates and lease or title. Friday: write the kill/keep note and the peg method you want. Customer names still out. SBA 7(a) credit files inside $5 million (Source: SBA) look like this sprint. Combined 7(a)+504 can reach $10 million (Source: SBA). Same sprint, more binders.
Main Street 2.75x SDE (Source: BizBuySell via Iconic) can finish the sprint. Stanford $16 million / 6.2x / ~25% margin (Source: Stanford GSB) takes longer — and that median is never a job-shop multiple. IBBA's 83% three-offer statistic (Source: IBBA) is why the sprint exists. Census CBP 284,452 / 68.4% small (Source: Census CBP) is why week one must not dump names. ISM 54.6 / 71.1 (Source: ISM) and Fed 76.0% (Source: Fed G.17) stay in the margin comment.
Jason Taken is a business broker, not counsel or an Environmental Professional. Educational information only. No outcome is guaranteed.
Questions the first-room drop should make unnecessary later
Do tax, P&L, and job-cost share a religion. Are serials present. Are inventory classes present. Is the certificate live. Is lease or title in the room. If those five are yes, you may ask for the next rooms. If any is no, stop adding rooms.
Stage the room so you do not announce a sale. Names late. Employee SSNs never in the first drop. Version control on the machine list is a finding if serials drift every week. A financial pack that updates without a bridge is a finding. Completeness is how you stay in a competitive process without looking reckless.
Do not waive environmental because you are tired. Do not waive the physical because the seller is tired. Do not waive lien releases because the lender is tired.
HedgeStone stages rooms so customer names stay late. If you demand the whole book in week one, you are a leak risk. Ask for the first room. Earn the next. Version drift on the machine list is a finding. So is a financial pack that updates without a bridge.