Commercial Building Inspection Checklist: What to Observe, Photograph and Flag in Each System

A commercial building inspection checklist is only useful if it tells you three things for each system: what to look at, what to record, and what counts as a problem. This one does that for an existing commercial building, from the parking lot to the accessible restroom, and is written to be read on a phone during the walk. It works for a commercial inspection under CCPIA's ComSOP and for the field day of an ASTM E2018 property condition assessment, and the table below shows where each system lands in both.

What this checklist is, and what it is not

It is a condition inspection checklist: a visual, non-invasive walk of a building that is already built and occupied, recording the condition of each system, the deficiencies that need money, and what could not be seen. Buyers, lenders, owners and property managers order this kind of inspection, and a property manager can use it for an annual condition walk.

It is not:

• A code or construction-phase inspection. Footing, framing, rough-in and final inspections are done by the building official against the permit drawings and the adopted codes. A condition inspection does not certify code compliance, and the E2018 guide lists code-compliance statements among the things a baseline assessment excludes.
• A fire marshal's inspection or a system test. You record tags, panels and doors; you do not test sprinklers, alarms or generators.
• An environmental assessment. Asbestos, lead, radon and contamination belong to a Phase I environmental site assessment or a specialist survey. See PCA vs Phase I ESA.
• A lender PCA by itself. A PCA adds document review, an interview and opinions of cost to the walk. If the client has a lender, use the PCA walkthrough checklist, which follows E2018's ten systems line by line, and read PCA vs commercial building inspection for the difference in deliverable.

How the checklist maps to E2018 and ComSOP

The checklist splits roofing from the envelope and adds the accessibility screen, because that is how most firms write them up. E2018-24 treats roofing and the envelope as one system in its walk-through section, and the accessibility screen sits in an appendix, outside the baseline.

This checklist	ASTM E2018-24 walk-through	ComSOP system (as summarized on our ComSOP page)
1. Site	9.4.1 Site	Site
2. Structure	9.4.2 Structural frame	Structure
3. Building envelope	9.4.3 Roofing and building envelope	Exterior
4. Roofing	9.4.3 Roofing and building envelope	Roof
5. Plumbing	9.4.4 Plumbing	Plumbing
6. HVAC	9.4.5 Heating and 9.4.6 Air conditioning and ventilation	HVAC
7. Electrical	9.4.7 Electrical	Electrical
8. Vertical transportation	9.4.8 Vertical transportation	Conveyances
9. Life safety and fire protection	9.4.9 Life safety and fire protection	Fire and life safety
10. Interiors	9.4.10 Interior elements	Interior
11. ADA screening	Appendix X2, abbreviated accessibility screening (an additional consideration)	Not among the systems listed; agree it in the scope

Before the walk

• Settle the scope in writing: which standard, which systems, whether the accessibility screen is included, and who the report is for. See scoping a PCA engagement.
• Send the document request ahead: prior reports, roof and equipment warranties, fire alarm, sprinkler and elevator inspection reports, the capital history. See the document request list.
• Confirm the escort, roof access, keys to mechanical and electrical rooms, and which tenant spaces will be open. Anything not available becomes a limiting condition, with the reason.
• Bring a flashlight, binoculars for the facade and the roof edge, a tape or scale object for photographs, and a crack gauge or coin. A visual inspection does not require instruments; anything you measure beyond that, say so in the report.
• Record the date, weather and time of day. Site lighting cannot be judged at noon, and a dry roof hides ponding.

1. Site

Observe: topography and how water leaves the site; catch basins, swales and downspout discharge; paving type and condition; curbs, walks and other flatwork; parking count and accessible spaces; striping; site lighting; landscaping and irrigation; retaining walls, fences, gates and the dumpster enclosure; signage; where each utility enters.

Document and photograph: the lot from two corners, each elevation from the site, every drainage structure, every paving defect with a scale object, the accessible spaces, and retaining walls end to end. Note approximate paving area; the cost line will need a quantity.

Typical deficiency flags:

• Alligator cracking, potholes or base failure in drive lanes
• Standing water, staining or debris lines that show where it stands after rain
• Grade sloping toward the building
• Vertical offsets in walks and curb ramps (a trip hazard and often an accessibility item too)
• Clogged or settled catch basins
• Leaning, bulging or cracked retaining walls
• Dark or damaged pole lights; worn striping

2. Structure

Observe: the foundation type as visible; the frame (steel, wood, concrete, masonry); floor and roof framing where exposed in mechanical rooms, garages, attics and above-ceiling glimpses; slab-on-grade cracks and their character; any evidence of settlement, deflection or movement.

Document and photograph: exposed framing in each area where it can be seen, every crack with a gauge or coin for width, door frames and openings that show racking, and parking-structure soffits and columns if there is a garage.

Typical deficiency flags:

• Stair-step cracking in masonry, or diagonal cracks off the corners of openings
• Doors that bind or have been trimmed to close; floors that visibly slope
• Corrosion at steel connections, lintels or embedded steel
• Spalled concrete with exposed reinforcing, especially in parking decks
• Rot or insect damage in wood framing
• Water entry at the foundation wall

A condition inspection observes; it does not calculate. Where something suggests structural distress, the recommendation is an evaluation by a structural engineer, not an opinion on capacity.

3. Building envelope

Observe: cladding type on each elevation (brick, block, stucco, EIFS, metal panel, curtain wall); sealant at control joints, windows and penetrations; windows and storefront, their frame type and glazing; exterior doors and hardware; parapets, balconies, canopies and soffits as visible from grade.

Document and photograph: each elevation, then close-ups of every sealant failure, crack, stain and failed glazing unit, with the location noted. Use binoculars and the zoom for upper floors, and say the upper elevations were viewed from grade.

Typical deficiency flags:

• Hardened, split or missing sealant at joints and window perimeters
• Efflorescence, spalling or rust staining on masonry
• Cracked stucco, or impact damage and open joints in EIFS
• Fogged insulated glass (a failed seal)
• Interior staining at window heads and sills that points to leaks
• Corroded door frames and closers that no longer latch

4. Roofing

Observe: covering type and approximate area; slope and drainage (drains, scuppers, gutters and downspouts); flashings at parapets, curbs and penetrations; coping and edge metal; seams; rooftop equipment and its curbs; skylights; the hatch, ladder and any fall protection. Walk the roof only where there is safe access; E2018 does not expect the observer to enter unsafe areas. If you cannot get on the roof, view what you can from a ladder, an adjacent window or the ground, and record the limitation.

Document and photograph: the field from the hatch, each drain, each equipment curb, the parapet base, every defect with scale, and any interior ceiling stains below. Ask for the roof's installation date and warranty, and whether there have been leaks.

Typical deficiency flags:

• Ponding water, or the algae and dirt rings that mark where it ponds
• Open seams, blisters, splits, punctures and patches over patches
• Membrane pulling away at the perimeter; displaced ballast
• Clogged drains and missing strainers
• Loose or open flashing at curbs and penetrations; failed sealant at coping
• Interior stains that line up with roof drains or equipment

5. Plumbing

Observe: supply and waste piping materials where visible; water heaters (type, fuel, capacity and the manufacture date on the nameplate); the water service and backflow preventer with its test tag; restroom groups and the age of their fixtures; sump and ejector pumps; gas piping where exposed; any evidence of leaks or slow drains.

Document and photograph: each water heater and its nameplate, the main and the backflow preventer with its tag, each restroom group, and any staining or corrosion.

Typical deficiency flags:

• Active leaks, or corrosion and mineral crust at fittings and valves
• A water heater relief valve with no discharge line
• An expired or missing backflow test tag
• Polybutylene supply piping (one of the materials agency lenders ask consultants to identify)
• Fixtures cracked, loose or out of service
• Staining under restrooms on the floor below

6. HVAC

Observe: heating and cooling equipment by unit (packaged rooftop units, split systems, boilers, chillers, cooling towers); nameplate data (manufacture date, capacity, fuel, refrigerant); distribution (ducts, piping, terminal units); controls and thermostats; exhaust fans and makeup air; whether anything is shut down. E2018-24 counts what you hear and smell as observations, so note bearing noise, short cycling and odors and say which sense detected them.

Document and photograph: every nameplate, every unit from two sides, each mechanical room, and any corrosion or leaking condensate. Ask who holds the service contract, what has been replaced, and what has failed recently.

Typical deficiency flags:

• Units not operating or locked out on the day
• Rusted cabinets, missing access panels and flattened or corroded coil fins
• Rusted drain pans and condensate leaking onto the roof or a ceiling
• Loud bearings, belts or compressors
• Exhaust fans not running
• Equipment near or past the end of its useful life by nameplate date (the reserve table's job, not a judgment of failure)

7. Electrical

Observe: service size and voltage from the main disconnect's labeling; switchgear and distribution panels and their brands; branch wiring type where visible; metering; emergency and standby power (generator and transfer switch) and its exercise log if one is posted; exterior and site lighting. Open a representative few panel covers only with the escort's permission, and only if you are qualified and equipped to do it safely.

Document and photograph: the switchboard, each opened panel interior, the generator nameplate, and any corrosion, missing covers or blocked clearances.

Typical deficiency flags:

• Missing panel covers, open knockouts or missing breaker blanks
• Scorch marks, melted insulation or a burning smell at equipment
• Double-tapped breakers and unlabeled circuits
• Aluminum branch wiring, and panel brands lenders single out (both appear on Fannie Mae's problematic-materials checklist for agency work)
• Extension cords used as permanent wiring
• Storage blocking the working space in front of panels

Report why each matters, not just that it was seen. The E2018 guide gives aluminum branch wiring as its example: naming it without explaining the risk is not enough.

8. Vertical transportation

Observe: elevators, escalators and wheelchair lifts by count and type (hydraulic or traction); the capacity and the inspection certificate posted in the cab, with its date; the machine room where accessible; the service contractor; cab finishes, door operation and how the car levels at each floor.

Document and photograph: each cab, the certificate, the machine room and the controller. If the building has no elevator, record that as an observation.

Typical deficiency flags:

• An expired or missing inspection certificate
• Cars that stop above or below the landing (a trip hazard)
• Hydraulic oil staining in the machine room
• Doors that reopen repeatedly or close hard
• A car out of service on the day
• Original controllers on an older installation (a modernization candidate for the reserve)

Do not enter the hoistway, the pit or the car top. Testing and the hoistway belong to the licensed elevator inspector.

9. Life safety and fire protection

Observe: whether the building is sprinklered and the system type; risers, standpipes and any fire pump; the fire alarm panel, its status lights and its inspection tag; pull stations and devices; portable extinguishers and their tags; exit signs and emergency lights; rated doors, closers and latches; egress paths and stairs; kitchen hood suppression where there is a commercial kitchen.

Document and photograph: the alarm panel and its tag, the sprinkler riser and its tag, a representative extinguisher tag, every dark exit sign, every door that does not close and latch, and any blocked exit. Ask for the most recent inspection reports.

Typical deficiency flags:

• An alarm panel showing a trouble or supervisory signal
• Expired tags on extinguishers, sprinklers or the alarm system
• Dark exit signs; emergency light units that are damaged or show a fault light
• Rated doors propped open, with disconnected closers, or that do not latch
• Storage in stairs, corridors or in front of exits
• Painted or corroded sprinkler heads; heads obstructed by storage

Under E2018 these items are reported regardless of cost, and open items from the last inspection report are recorded violations, not suggestions. See immediate, short-term and long-term costs.

10. Interiors

Observe: common-area finishes (floors, walls, ceilings) and their approximate age; lobbies and corridors; restrooms; stairs, treads and handrails; break rooms; a representative sample of tenant spaces. When you sample, state the extent: which suites, which floors, and which were not opened.

Document and photograph: each corridor and stair, each restroom group, representative suites, and every stained ceiling tile and damaged finish with its location.

Typical deficiency flags:

• Stained or sagging ceiling tiles (and the leak above them, which belongs to another system)
• Worn, buckled or torn flooring that creates a trip hazard
• Loose handrails and damaged stair nosings
• Water damage at walls and baseboards
• Odors, staining or visible suspect growth, recorded as observed and with no sampling

Tenant-owned improvements and furniture are usually outside the inspection; note where tenants own the finishes.

11. ADA screening

Include this only when it is in the scope. E2018's Appendix X2 describes an abbreviated accessibility screening of readily observable items; it is not an ADA compliance survey, and the report should not say the building complies or does not comply.

Observe: accessible parking spaces, their signage and access aisles; the route from parking and the public way to an entrance; entrance doors, their clearances and hardware; the route inside to the main areas of the building; restroom features such as clearances and grab bars; elevator controls where there is an elevator.

Document and photograph: each accessible space and its sign, the route, the entrance, and each restroom you screened.

Typical flags to note:

• No accessible space, no sign, or no access aisle
• A route with steps, a steep or missing curb ramp, or a broken walk
• Entrance hardware that needs tight grasping or twisting
• A restroom with no grab bars or no clear floor space at the fixtures
• Multistory buildings without an elevator, recorded as an existing condition

Describe what was seen, and recommend a full survey by an accessibility specialist where the client needs a determination. See the abbreviated accessibility screening.

Writing up a deficiency

Each flag above becomes a finding in the report, and a finding that holds up has four parts: where it is, what was seen (or heard, or smelled), why it matters, and what to do about it. Say how you know: observed on site, reported by the escort, or found in a document. "Water stain on ceiling tile below RTU-3, observed; the property manager reported a leak at the unit curb last winter" is a finding a reader can rely on. "Roof leaks" is not.

Leaving the site

Walk your notes against this list before you leave. Every line is either covered by a photograph and a note, or it is a limitation with a reason: the roof without safe access, the suite the tenant would not open, the generator not run. Nothing on the list should be left unaccounted for.

From checklist to report

A commercial inspection report organizes these findings by system, with photographs and recommendations. A property condition report adds the document review, the interview, and opinions of cost sorted into immediate, short-term and long-term, with a replacement reserve if the client asks. The building condition assessment report template lays out that report section by section, and how to write a property condition report explains what each section must carry under E2018-24.

Baseline PCR drafts the property condition report from the photographs, notes and documents you collect on this walk. The reviewing engineer edits every finding, rating and cost, and is the professional of record who approves and signs it; nothing is issued without that review. The sample report shows the result on a 1985 office building.