
DFW Commercial Lease Red Flags: 5 Key Checks
November 3, 2026 | Randall Wooten
Know which building defects could become your responsibility before you sign a commercial lease.
Commercial lease red flags to check first in DFW
You are considering a Dallas-Fort Worth commercial property, but you do not want hidden building problems to become operating expenses after you move in. These DFW commercial lease red flags cover five systems to check before signing: the foundation, HVAC equipment, roof, electrical service and plumbing.
You will also learn which records to request, when a specialist may be needed and how a commercial property inspection can support your lease negotiations.
Why walkthrough due diligence matters before signing
A polished suite can hide defects above the ceiling, beneath the slab or on the roof. The lease determines who pays when those defects interrupt operations or require replacement.
Commercial agreements may be full-service gross, modified gross or triple net. According to Dean Commercial Real Estate, standard NNN and absolute net leases can shift operational upkeep and some capital replacements to the tenant, directly or through common area maintenance charges.
Read the repair clauses alongside the property's physical condition. Identify who is responsible for the roof, structure, HVAC, plumbing and electrical systems. Look for exclusions, repair limits and requirements to use particular contractors. If the landlord promises to deliver systems in working order, make sure that promise and its duration are written into the lease.
Alert Home Inspections provides commercial property inspections across the DFW region for business owners, tenants and investors before they execute a lease. We evaluate accessible structural, roofing, mechanical, electrical and plumbing components so you can compare the observed condition with the proposed agreement.
Red flag 1: Clay soil expansion and foundation movement
North Texas clay soils expand as they absorb moisture and contract when they dry. Repeated movement can affect slabs, grade beams, walls and door openings. Fresh paint may conceal cracks, so look at how the building components fit and operate.
Heavy hollow-metal doors offer useful clues. Movement may pull a frame out of square, causing the door to bind, rub, swing by itself or fail to latch. Other warning signs include cracks wider than 1/4 inch, cracks with visible offset, uneven floors and separations where walls meet ceilings or exterior masonry.
Inspect the site as well as the interior. Pervious ground should generally fall away from the foundation by about 6 inches over the first 10 feet. Negative grading, standing water near the perimeter and downspouts discharging beside the footing can increase soil movement. Deep gaps where dry soil has pulled away from the slab also suggest poor moisture control.
One symptom alone does not establish the cause. Multiple related signs may justify evaluation by a licensed structural engineer before the inspection or lease contingency expires.
Red flag 2: Aging or undersized rooftop HVAC units
Comfort during a brief tour does not prove that rooftop units can handle a full workday, occupied offices or heat-producing equipment. Ask for each unit's model, serial number, installation date, service history and repair invoices.
Commercial rooftop units operating beyond a typical 15- to 20-year design life deserve closer review. Watch for rusted condensate pans, damaged coils, dirty filters, fouled condenser coils, worn belts and corroded drain lines. Disconnected ducts or heavy growth inside accessible ductwork can indicate neglected maintenance or moisture problems.
Capacity also matters. A system that served lightly occupied retail space may not support a restaurant, medical use or equipment-heavy business. Trades Quote explains that commercial sizing shortfalls can be checked through an ACCA Manual N load calculation; square footage alone is not enough.
Compare the equipment's remaining useful life with the lease term and repair clause. Our guide to verifying commercial mechanical life expectancy explains which records and equipment details can support that review.

Red flag 3: Low-slope roof wear and ponding water
Roof trouble often appears inside as stained ceiling tiles, musty smells or patched drywall. Those signs should lead to an examination of the roof surface, drainage paths and penetrations rather than another cosmetic repair.
The National Roofing Contractors Association defines ponding water as water that remains on a roof for 48 hours or more after rain under normal drying conditions. It can indicate blocked drains, inadequate slope or a depressed roof area, and prolonged ponding can accelerate membrane deterioration.
At the roof perimeter, inspect seams, parapets and coping caps. The Roofing Brief identifies lifted or separated membrane seams, brittle or missing counterflashing and cracked coping-cap sealant as commercial roof repair concerns. Also check around rooftop units and pipe penetrations, where failed flashing can admit water.
Ask for repair records, warranty documents and information about prior leaks. When surface conditions or interior staining suggest trapped moisture, an infrared roof survey or direct moisture testing may be an appropriate follow-up.
Red flag 4: Obsolete or undersized electrical panels
Your planned use may demand far more power than the previous tenant needed. Manufacturing machinery, commercial cooking equipment, servers and added HVAC loads can expose a service-capacity problem after the lease begins.
Record the main service rating and compare it with your expected equipment schedule. Review main distribution panels, disconnects and accessible subpanels. Warning signs include obsolete Federal Pacific Electric or Zinsco panels, heat discoloration, burnt insulation, evidence of arcing, missing covers and open junction boxes. Ungrounded circuits and missing ground-fault protection in wet locations also require attention.
Do not assume spare breaker spaces mean spare electrical capacity. A licensed electrician or electrical engineer may need to calculate the anticipated load and determine whether the service, feeders and distribution equipment can support it. Clarify in writing who pays for an upgrade and whether landlord approval or utility work will be needed.
Red flag 5: Hidden plumbing and waste-line failures
Plumbing problems are easy to miss when fixtures are used only briefly. Run multiple fixtures, observe drainage and water pressure, and look beneath sinks and around water heaters for corrosion, staining or active leaks.
Slow drains and recurring clogs may indicate more than a local blockage. Older cast-iron waste lines can corrode internally or deteriorate below the slab. Sewer gas odors can point to dry traps, failed seals or venting defects. A sewer lateral video scope may be warranted when symptoms, age or repair history raise concerns.
The intended use changes what you need to verify. A food-service space may require a properly sized grease trap, while certain commercial systems need backflow prevention to protect the potable water supply. Confirm that the installed equipment suits your operation and that required inspection or testing records are available.
Musty odors near plumbing walls, floor drains or ceiling cavities may signal concealed moisture. Thermal imaging can identify temperature differences associated with possible moisture, but suspicious areas should be checked with an appropriate moisture meter and investigated at the source.
Protecting your lease with an ASTM E2018 inspection
A pre-lease inspection gives you a dated baseline for the property's visible condition. That record can help identify existing defects and items that should be repaired, monitored or evaluated by a specialist.
Alert Home Inspections is veteran-owned and operated. We perform our commercial property inspections in general conformance with the scope and limitations of ASTM E2018-08, covering accessible roofs, exterior construction, sites, interior finishes, foundations, plumbing, electrical and HVAC systems, plus visible evidence of previous problems and repairs.
Before the assessment, gather the proposed lease, site plans, available maintenance contracts, repair invoices and system records. Request certificates of occupancy, relevant permits and notices of unresolved code issues. These documents help connect observed conditions with the property's history and your proposed use.
Use the findings while your inspection or due-diligence contingency remains open. You may request repairs before possession, negotiate responsibility for identified systems or obtain specialist evaluations. Have your commercial real estate attorney put agreed repair obligations, delivery conditions and cost allocations into the lease.
For a closer look at scope and deferred-maintenance categories, read our Dallas investor's guide to a commercial PCA.

Schedule your DFW commercial property inspection
Before you sign, call Alert Home Inspections at (817) 999-4162 to discuss the building, proposed use and due-diligence schedule. You can also email randall@alertinspector.com or visit us at 1306 Timber Ridge Rd, Weatherford, TX 76088, USA.
Read Next:

How to Verify Commercial Mechanical Life Expectancy
A practical due diligence method for estimating when major building systems will need replacement.

Commercial vs Residential Inspection: Choose the Right Review
Understand how standards, systems, methods and exclusions change when you move from a home inspection to commercial due ...

Negotiating Repairs After Home Inspection: A Buyer’s Plan
Turn inspection findings into a focused, well-supported request before your option period ends.
