Buying your first commercial building: the mistakes that cost owners the most

The short version: most mistakes happen before the contract

The biggest mistakes first-time commercial buyers make are buying a building that fits today but not the next five years, treating due diligence as a formality, skipping environmental and zoning checks, arranging financing too late, and underestimating what ownership really costs each year. Almost all of them are made before closing, which means almost all of them are avoidable with the right questions asked in the right order. Once you own the building, the problems are yours.

I have worked in commercial real estate since 1999, starting at The Staubach Company, and I have owned and run a retail business myself, so I understand why owners want to stop paying rent and start building equity. The aim of this guide is not to talk anyone out of buying. It is to help you buy the right building on the right terms.

Buying for the business you have instead of the one you are building

A lease ends and you can move. A building is a much longer commitment, and selling it to move takes time and money. The most common fit mistake is buying exactly the space the business needs today, then outgrowing it in a few years. The opposite mistake is buying far more than the business can use and carrying the empty space alone.

Before you look at listings, sketch the business three to five years out: headcount, equipment, storage, parking and customer traffic. Then decide whether you want room to grow, or a building with extra space you can lease to tenants until you need it. A building with a leasable suite can help pay the mortgage, but it also makes you a landlord, with everything that involves.

Location deserves the same long view. A building you own ties the business to one spot for years, so test it the way you would test a lease: drive times for the staff you have and the staff you hope to hire, access for customers and deliveries, and what is planned nearby. A new highway interchange or a large development down the road can help or hurt, and it is better to know before you buy.

Treating the inspection period as paperwork

The due diligence period in a commercial contract is your one chance to investigate the property while you can still walk away or renegotiate. First-time buyers sometimes treat it as a waiting period. Experienced buyers treat it as a project with a checklist and a deadline.

Hire a commercial property inspector, and bring in specialists where the building calls for it. Roofs, heating and cooling equipment, parking lots, plumbing and electrical service are the expensive items in most buildings, and the age and condition of each should be documented before you commit. Ask for repair records and warranties. If something serious turns up, you can negotiate a price reduction, a repair, or a credit at closing, but only if you find it in time.

Put the deadlines on a calendar the day the contract is signed. Inspections, title objections, financing approval and environmental reports each take time to order and receive, and the due diligence period does not pause while you wait. If something is running late, ask for an extension in writing before the period ends rather than hoping the seller will be flexible afterward.

• Property condition inspection with roof, mechanical, electrical and plumbing review
• Title commitment and survey, checking easements, encroachments and access
• Zoning and permit review for your intended use
• Environmental review appropriate to the property and its history
• Review of existing leases, service contracts and operating expenses
• Insurance quotes, so the cost is known before closing

Skipping the environmental question

Environmental review is the item first-time buyers are most tempted to skip, especially on a building that looks clean. That can be an expensive shortcut. The U.S. Environmental Protection Agency notes that under federal law, liability for environmental contamination may be assigned based solely on property ownership, and that buyers must conduct All Appropriate Inquiries before acquiring a property to qualify for certain liability protections. The EPA cites the ASTM E1527-21 standard for Phase I environmental site assessments as consistent with that requirement.

Properties with a history of industrial use, dry cleaning, auto service or fuel storage deserve particular care, but past uses are not always obvious from the building today. Your lender may require a Phase I assessment anyway. Even when it does not, ask your attorney whether one makes sense for the property you are buying.

Assuming your business is allowed there

Owning a building does not mean you can use it however you like. Zoning determines which uses are allowed, and some uses need special approval. Parking requirements, signage rules and building codes all apply. Confirm with the city that your intended use is permitted before the due diligence period ends, not after closing.

Occupancy rules matter too. The City of Dallas states that a new certificate of occupancy is required for the first use of a building, a change of use, a change of tenant on an existing certificate, or a change in floor area, and suburban cities apply similar rules. If your business is a different use from the previous occupant, the change can bring requirements for parking, fire protection or accessibility. Get those costs estimated during due diligence, because they can change what the building is worth to you.

Arranging financing after choosing the building

Commercial loans work differently from home mortgages. Lenders look at the property, the business, the owner's financial picture and the intended use, and they often require their own appraisal and environmental review. Approval takes time, and terms vary widely between lenders and loan programs. Buyers who start this conversation only after signing a contract often find the timeline tight or the terms different from what they assumed.

Talk to a lender or a commercial financing specialist before you make an offer, so you know what you can buy, how much cash you will need and how long approval is likely to take. If you do not have a lending relationship already, Brian Gramlich works on commercial financing and can explain the options. I focus on finding and negotiating the property; financing deserves its own expert.

Underestimating the annual cost of owning

Rent is a known monthly figure. Ownership has a mortgage payment plus a set of costs that move: property taxes, insurance, maintenance, repairs and the eventual replacement of major systems. The Texas Comptroller explains that appraisal districts appraise property value as of January 1 each year and that local taxing units set their own tax rates, so the tax bill can change every year. After a purchase, the appraisal district's view of your building's value may change as well.

Build a realistic annual budget before you buy, including a reserve for roof, mechanical and parking lot replacement. My guide on how Texas property taxes affect commercial property covers the tax piece in detail. Owners who budget for these costs enjoy owning. Owners who do not often find the building straining the business it was meant to support.

Inheriting tenants you did not vet

If the building comes with tenants, you are buying their leases along with the walls. Read every lease and amendment. Look at the rent compared with the market, how long each lease runs, renewal options, who is responsible for repairs, and any rights the tenants hold, such as a right of first refusal on a sale or an exclusive use clause that limits what else you can lease.

Ask for estoppel certificates, signed statements from each tenant confirming the lease terms, rent and that there are no disputes. If you plan to occupy part of the building yourself, confirm that you can actually get the space you need when you need it. A tenant with years left on a lease and a renewal option may be there much longer than you expect.

Owning it in the wrong structure

Many business owners hold real estate in a separate entity and have the operating company lease the building from it. That structure can offer liability, tax and estate planning benefits, and it can make it easier to sell the business and the building separately later. Whether it fits your situation is a question for your CPA and attorney, and it should be answered before closing, because changing title afterward can be costly.

If you are still deciding whether to buy at all, my earlier guide on the choice between renewing, relocating and buying walks through that decision from the beginning.

Before you make an offer

Get your team in place first: a lender, an attorney, a CPA and a broker who represents you as the buyer. Define what the business needs, set a budget that includes the full cost of ownership, and know what you will investigate during due diligence before you sign the contract. Ask for a due diligence period long enough to complete those checks, and do not let enthusiasm for a building shorten it.

Understanding how sellers prepare also helps you negotiate; my guide on how a commercial building sale runs from the seller's side shows what documents you should expect to receive. I represent buyers of office, retail and industrial property across Dallas–Fort Worth from my office in McKinney. A first conversation is a chance to test whether buying makes sense for your business right now, and what kind of building would serve it best.

Keep your emotions in check as well. The first building that fits is rarely the only building that fits, and a buyer who can comfortably walk away from a deal negotiates better than one who has already arranged the furniture in their head.

Questions people ask me