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Buying Commercial Property, Step by Step

By PlainSight — Insightful Actions · Updated September 2026 · ~9 min read

A commercial purchase is a sequence of short windows: the letter of intent, the due diligence period, the financing contingency, the title objection date, the closing. Each one is a chance to learn something and act on it, and each one closes on a date. Most expensive mistakes are a step done late, or not at all. Here is the whole sequence, with what goes wrong at each step.

The ten steps

1. Decide what you're buying, and how you'll pay for it

Property type, size, location, how long you'll hold it, and what return you need. Then talk to lenders before you look: how much they'll lend, on what terms, and what minimum debt-service coverage they require. Banks set that minimum for each type of loan, and it caps what you can borrow.

2. Screen with three numbers

Net operating income (NOI) is the rent and other income less operating expenses, before loan payments. The cap rate is NOI divided by the price. Debt-service coverage is NOI divided by a year of loan payments. Recompute all three from the seller's rent roll and operating statement; don't take the broker's package's figures on trust.

An example, to show the arithmetic (not a market rate)
Price$2,400,000
Net operating income$180,000
Cap rate (NOI ÷ price)7.5%
Loan (70% of price), 6.75%, 25 years$1,680,000
A year of loan payments$139,288
Debt-service coverage (NOI ÷ payments)1.29
3. The letter of intent

The deal's outline: price, deposit, the length of the due diligence period, the financing contingency, the closing date, and the list of documents the seller will deliver and when. It is usually non-binding except for confidentiality and any exclusivity period, so say so in it.

4. The purchase and sale agreement

Have a real estate attorney draft or review it. It sets the deposit and when it goes into escrow, the due diligence period, the seller's deliveries, the seller's representations, how title and survey objections work, tenant estoppels and lender agreements as closing conditions, and what happens after a fire or a condemnation.

5. Due diligence

Order every report the day the contract is signed: title, survey, Phase I environmental site assessment, property condition assessment, zoning. Read every lease against the rent roll. The whole checklist, with the red flags, is in the commercial due diligence guide.

6. Financing

Application, the lender's appraisal and reports, the loan commitment, the rate lock. Read the commitment's conditions the day it arrives: estoppels, lender agreements with tenants, insurance, reserves.

7. Title and survey objections

Compare the title commitment's exceptions with the survey. Object in writing to anything you won't accept, before the contract's date, and give the seller its cure period.

8. Before closing
9. Closing day

Read the settlement statement line by line against the contract. Before any money moves, confirm the wiring instructions by phone, on a number from a source you already trust, never from the email that sent them.

10. The day after

Tell every tenant in writing who the new owner is and where to pay rent. Collect tenants' insurance certificates, abstract every lease (dates, options, rent steps), and set the first year's expense budget and reconciliation dates.

Two special cases

See it on a brokerage's numbers

PlainSight's real estate brokerage example reads fourteen agents' deals and a commercial desk the way a broker would, including what skipped steps cost the office. Everything runs in your browser.

Take the brokerage tour →

Frequently asked questions

What is a good cap rate?
It depends on the property type, the market and the tenants, and it moves with interest rates. Compare against recent sales of similar buildings in the same market, and judge the building on its NOI and coverage rather than on the cap rate alone.
What does debt-service coverage mean?
NOI divided by a year of loan payments. At 1.29 the building earns 29% more than the loan costs. Your lender sets the minimum it will accept, so ask before you make an offer.
Is a letter of intent binding?
Usually not, apart from confidentiality and exclusivity terms, but only if it says so. Have your attorney confirm the wording.
Is this legal or tax advice?
No. It's a working sequence. Contracts, leases and state law decide the details; use a real estate attorney and a tax adviser for each purchase.

Sources

This guide is general information for buyers, agents and brokers, not legal, tax or financial advice. The worked example is arithmetic, not a forecast or a market rate.