When you sell a building, the buyer will conduct due diligence: a structured review of the property's leases, finances, legal status, and physical condition. The smoother that review goes, the faster you close and the less room there is for a buyer to renegotiate. Almost all of that comes down to one thing you control — having your documents ready before anyone asks.

Below is a practical checklist of what a buyer of an industrial or flex building will typically request. You don't need every item polished to list, but the more of it you can hand over early, the stronger your position.

1. Leases and tenancy

This is the heart of the file for any occupied building, because it drives the income the building is valued on.

  • All leases and amendments — signed originals of every current lease, plus every amendment, side letter, and renewal.
  • Current rent roll — a schedule of every tenant: suite, square footage, current rent, escalations, start and end dates, renewal options, and security deposit held.
  • Tenant estoppel certificates — short confirmations each tenant signs verifying its rent, term, deposit, and that no one is in default.
  • Security deposit accounting and a record of any pending lease disputes or defaults.

The number-one deal killerA discrepancy between your rent roll and the signed tenant estoppels is one of the most common causes of price retrades and collapsed deals. If your rent roll says a tenant pays $8.50 a foot and the estoppel comes back at $7.25, the buyer will re-cut the price — or walk. Reconcile your rent roll against actual leases before you go to market.

2. Financial records

  • Operating statements for the last two to three years — income and expenses for the property.
  • The current year's budget and, if you reconcile CAM (common area maintenance) with tenants, your CAM reconciliations.
  • Property tax bills and any pending assessment appeals.
  • Utility bills and a schedule of service contracts (landscaping, snow, elevator, fire/life-safety, etc.).
  • Capital expenditure history — major work done to the roof, HVAC, paving, or structure, with dates and costs.

3. Title, survey, and legal

  • Deed and your existing owner's title insurance policy, if you have one.
  • Survey — an existing ALTA or boundary survey saves the buyer time and money.
  • Recorded easements, covenants, or agreements affecting the property.
  • Any existing loan documents, if there is debt to be paid off or potentially assumed.

4. Environmental and physical

Industrial sites carry environmental history more often than other property types, so expect these — they are routine, not alarming.

  • Phase I Environmental Site Assessment — and a Phase II if one was ever done. If you have a recent Phase I, provide it; if not, the buyer will order one.
  • Property Condition Assessment (PCA) or any recent engineering/inspection reports.
  • As-built drawings, floor plans, and site plans.
  • Certificate of occupancy and records of any open permits or code violations.
  • Zoning information confirming the building's use is permitted.

5. Entity and authority

The buyer's attorney and the title company will need to confirm who actually has the authority to sell.

  • Organizational documents for the owning entity — articles of organization, operating agreement, or partnership agreement.
  • Evidence of good standing and any resolutions or consents authorizing the sale.
  • If the property was inherited or is held in an estate or trust, the documents establishing authority to sell.

Why this protects your price, not just your timeline

Being organized does two things. First, it shortens due diligence. Every week the property sits under contract is a week something can go wrong — a buyer's circumstances change, financing wobbles, cold feet set in. A tight, well-documented file gets you to closing before those risks compound. Second, it builds buyer confidence, and confident buyers pay full price. Missing records, unreconciled rent rolls, and surprises discovered late are exactly what buyers use to justify a lower number or a mid-deal renegotiation.

A simple testIf a buyer asked for your rent roll, last two years of operating statements, and a copy of your leases tomorrow, could you produce them by the end of the week? If yes, you are in a strong position to sell. If not, that gap is the first thing worth closing — before you talk price with anyone.

Selling to a buyer who has done this before

Oxford Realty Advisors buys industrial and flex buildings for its own account and runs this diligence process constantly, so we can tell you exactly what we need and work efficiently through it. Because we buy all-cash with no financing contingency, there is no lender diligence layered on top of ours — which is part of why our closings run on the shorter end. If you'd like a direct, no-obligation conversation about your building, you can reach us here.

General information only. This article is provided by Oxford Realty Advisors for general informational and educational purposes and does not constitute investment, financial, legal, or tax advice, nor an offer to buy or sell any property. Every building, ownership structure, and tax situation is different. Consult your own attorney, accountant, and qualified tax advisor before making any decision about selling, exchanging, or valuing a property.