Rules
Commercial property walk-through: what to inspect before you close
Room-by-room pre-closing inspection list for commercial buildings: structure, systems, life safety code red flags, and how to turn findings into numbers.
What to take away
- A pre-closing walk-through verifies structure, systems, and life safety, the three things an appraisal, a disclosure form, and a rent roll never show.
- Bring a flashlight, a moisture meter, a phone camera, and a printed checklist. Photograph every defect you plan to negotiate.
- Test systems under load. Run the HVAC in both modes, flush every fixture, and open the electrical panel.
- Code problems in egress, occupancy, and fire protection are what delay closing or move the price.
- Give your findings to the adviser who runs the numbers, because repair credits and loan terms interact.
Why the paperwork never shows the building
An appraisal answers one question: what is the building worth to a lender? It does not measure whether the roof drains pond or whether a panel has spare breaker spaces.
Seller disclosure forms list known defects. Few sellers climb into a mezzanine with a moisture meter.
The walk-through answers a narrower question. What will you own on the day you get the keys?
Structure and shell: the expensive items
Check the roof from the surface, not the parking lot. Look for ponding water, blistered seams, and patches around penetrations. Ask for the membrane age and whether any warranty transfers to you.
Inside, scan the ceiling tiles for staining, then trace each stain upward to the deck or pipe above it. Freshly replaced tiles tell you the leak keeps returning.
Look at the slab for cracks wider than a credit card and for level changes at doorways. Look at walls for diagonal cracks at corners and separation at joints.
Mechanical, electrical, plumbing, and fire
Ask the seller to bring the building to normal operating temperature before you arrive. Then run each system yourself.
| System | What to test | Red flag |
|---|---|---|
| HVAC | Run each unit in heating and cooling for 15 minutes | Rooftop units past 15 years with no service log |
| Electrical | Open the panel, count spare breakers, read the labels | Double-tapped breakers, missing covers, unlabeled circuits |
| Plumbing | Flush every fixture, run hot water, check the heater | Slow drains, rust-colored water, no backflow device |
| Fire | Trip the alarms, check sprinkler heads, read the tags | Painted sprinkler heads, expired inspection tags |
Life safety, egress, and code red flags
Occupancy and egress rules control how many people you may place in the space. The NFPA 101 Life Safety Code sets exit width, travel distance, and door swing requirements. Measure the rear exit and confirm it opens freely from the inside.
Blocked exits, missing panic hardware, or a storage room built across an exit path are red flags. So are painted sprinkler heads, because paint hides corrosion.
Ask the local building department for the permit history at that address. That record is public, and unpermitted improvements show up there.
Site, parking, and access
Count the parking stalls against what the code requires for your use, not the current tenant's use. Check snow storage, loading access, and whether a neighbor's driveway easement crosses the lot.
If you are still choosing between sites, learn to judge a location consultant's numbers before you pay for one, because a paid ranking is not the same as an analysis.
Example: the order of a light industrial walk-through
A buyer walked the property in one visit with a contractor. Here is the sequence they used.
Order of a light industrial walk-through
- Exterior firstroof surface, drains, dock levelers, and pavement.
- Shell secondslab, wall joints, column bases, and ceiling plane.
- Systems thirdHVAC, panels, fixtures, and the alarm panel.
- Photos throughout, each defect framed with a tape measure for scale.
- A cost estimate for every item before any credit gets requested.
The roof needed full replacement. The panel needed two spare breakers. Only one of those became a negotiation.
Turning findings into numbers
Each defect becomes a line item: repair cost, timing, and who pays after closing. A roof is a capital cost. A missing backflow device is a permit and inspection cost.
If you plan to occupy the building you buy, financing rules shape the answer. SBA 504 and 7(a) loans work for owner-occupied workspace, and lenders judge cash flow and collateral before the building itself.
If tenants come with the building, read the leases before you sign anything. The ASTM guidance on commercial lease structures covers the expense clauses that hide cost. Net leases pass taxes, insurance, and maintenance to the tenant, as the general legal definition of a lease explains.
Once you own the building, the paperwork does not stop. The site's guide to workspace property leasing, first estimate to final walk-through, maps CAM reconciliation, HST, and renewal dates.
