Commercial Property Inspection: A Guide for Home Inspectors

Short answer: A commercial property inspection is usually sold as a property condition assessment (PCA), and the reference framework is ASTM E2018-24: a walk-through survey plus document review and interviews, delivered as a property condition report with opinions of cost to fix what you found. The skills carry over from residential work, but the client, the scope letter, the report and the liability do not. Price each job from a written proposal, never from a per-square-foot sheet you copied from residential.

Most residential inspectors get their first commercial call from an agent who already trusts them. A small office building, a strip retail center, a six-unit apartment property. The temptation is to treat it as a big house. That is the mistake this guide is meant to prevent.

What a commercial property inspection actually is

On the residential side, your scope comes from your state's standards of practice or an association standard. On the commercial side, the document most lenders, investors and their attorneys recognize is ASTM E2018, Standard Guide for Property Condition Assessments: Baseline Property Condition Assessment Process. The current edition is E2018-24, maintained by ASTM Committee E50.

ASTM describes the purpose plainly: a framework for a PCA "of the primary improvements at commercial real estate properties by performing a walk-through survey and conducting research." The goal is "to identify and communicate material physical deficiencies to a user." The work product is a property condition report (PCR), which "includes opinions of costs for suggested remedies of observed physical deficiencies."

When ASTM announced the revised guide in April 2024, the chair of the subcommittee that maintains it described an E2018 PCA as "essentially like a residential home inspection, except that it's used for commercial buildings and facilities." That is encouraging, and it is also where the similarity ends. The differences below are where new commercial inspectors get hurt.

Some inspectors sell a lighter "commercial inspection" that does not claim E2018 conformance. The Certified Commercial Property Inspectors Association (CCPIA) maintains its own International Standards of Practice for Inspecting Commercial Properties (ComSOP), last revised in 2026. InterNACHI states on its own ComSOP page that it has discontinued its commercial certification and now refers inspectors to CCPIA. Whichever standard you work to, name it in the agreement and the report.

Residential inspection vs. commercial PCA, side by side

What E2018 asks for, section by section

You need to buy the standard. ASTM lists E2018-24 at $104, and anyone selling E2018 work should own a copy rather than rely on summaries, including this one. What follows is from ASTM's published scope and table of contents.

It is voluntary and it is a baseline. Section 4.1 says the guide reflects "a reasonable baseline process" for use "on a voluntary basis," and that users can ask for more or less depending on their objectives, schedule, budget and risk tolerance. Your proposal is where that gets decided.

It is not technically exhaustive. Section 4.3.3 says a PCA "is not intended to be construed as technically exhaustive," and 4.3.1 says no PCA "can wholly eliminate the uncertainty" about physical deficiencies. Put that language, or your own version of it, in your agreement.

Representative observations are allowed. Under 4.3.4 the field observer can survey enough units, areas and systems "to comment with reasonable confidence" and extrapolate to similar areas. Annex A1 gives recommended quantities for multifamily, office and retail properties. On a 40-unit apartment property, you are not expected to walk every unit, but you must say which ones you walked.

Research is part of the job. Section 8 covers document review and interviews: a pre-survey questionnaire, owner-provided documents, government agency information and interviews. Section 4.5.2 says a current PCR needs, at a minimum, a new walk-through, interviews, and a request for building and fire department records of recorded material violations.

The report has a defined shape. Section 11 lists the PCR contents: executive summary, purpose and scope, walk-through survey, document reviews and interviews, additional considerations, qualifications, limiting conditions and exhibits.

Some things are out of scope. Section 12 covers activity exclusions and warranty, guarantee and code compliance exclusions. Appendixes X2 and X3 describe abbreviated ADA and Fair Housing Act screenings, which are add-ons, not part of the baseline.

You do not need to be an engineer, but know the line

A common myth is that a PCA must be done by a licensed engineer. The standard does not say that. Section 7.7 of E2018-24 is titled "Not a Professional Architectural or Engineering Service," and section 7.6 allows the field observer and the PCR reviewer to be the same person. The detailed qualification wording in 7.1 to 7.5 sits behind ASTM's paywall, so read it in your copy before you write your qualifications statement.

What the standard does not do is change your state's engineering practice law. If a client asks you whether a beam is adequate, whether a roof structure can carry new rooftop units, or to design a repair, that is engineering. CCPIA's ComSOP draws the same line in its definition of structural stability: it "does not represent a determination of the adequacy of any structural system or component, an assessment of structural integrity, or a substitute for an engineering evaluation."

The practical answer is a referral bench. Line up a structural engineer, a roofing consultant and an MEP engineer you can bring in when the client wants more than a baseline PCA. Price their time into the proposal or have the client engage them directly, and say which in writing.

The property condition report is a different document

Residential reports are written for a buyer who has a few days to decide. A PCR is written for someone underwriting a loan or an acquisition, often reading it alongside a financial model.

That changes the writing:

• Lead with the executive summary. The reader wants the total opinion of cost, the immediate items and the big-ticket systems in the first two pages.
• Describe every system, not only defects. Type, approximate age, observed condition and expected remaining useful life, where you can support it.
• Say what you did not see. Which units, roof areas, mechanical rooms and tenant spaces were not accessed, and why.
• Cite your documents. List every document reviewed, every person interviewed, and every records request with its result, including "no response received."
• Separate observation from opinion. The observation is a fact. The cost and the remedy are opinions, and should be labeled that way.

The same discipline that makes residential defect comments hold up applies here, with more at stake per sentence.

In Binsr, templates are fully configurable: sections, line items and findings, with custom comment types, tags, severity levels and line item statuses. That lets you build a PCA template with your own system sections and a tag for each cost timing bucket, separate from your residential template. A single inspection can hold 1,000+ findings and 2,000+ photos, which matters on a multi-building property, and multiple inspectors can work the same report through real-time collaboration. See the features page for the full list.

Opinions of cost: where commercial reports earn their fee

This is the part that has no residential equivalent. E2018 section 10 covers "Opinions of Costs to Remedy Physical Deficiencies," and the PCR is expected to include them. Section 4.3.2 is useful protection: it says a suggested remedy "may be determined under time constraints, formed without the aid of engineering calculations, testing, exploratory probing" or other technically exhaustive means.

CCPIA's ComSOP defines "cost to remedy" as "an opinion of the cost to address physical deficiencies observed during an inspection," and a "short-term cost" as a repair that "should not be delayed for more than two years."

A simple way to structure your cost table:

Two rules keep you out of trouble. Name your cost source every time, and never present an opinion of cost as a bid. If the client needs bids, that is a contractor's job.

Liability and insurance are not the same as residential

Before you take the first commercial job, call your E&O carrier. Do not assume a policy bought for residential work covers a commercial job; it may need to be declared, endorsed or separately priced. Ask specifically about commercial property, opinions of cost, and reliance by lenders. Our guide to home inspector insurance covers the questions to ask.

Three commercial risks are worth planning for:

1. Third-party reliance. A lender or investor may want to rely on your PCR. E2018 section 4.8 says the contractual and legal obligations between user and consultant are outside the guide's scope, so your agreement has to settle who may rely on the report and on what terms.
2. Larger losses. A missed roof on a house is a claim. A missed roof on a 60,000 square foot building is a much larger one. Your limitation of liability clause and your policy limits should reflect that.
3. Licensing boundaries. Before you market commercial work, check whether your state's home inspector law says anything about commercial property, and whether any part of the report you plan to deliver could count as engineering under your state's engineering practice law.

Your home inspection agreement will not do the job unchanged. Have an attorney draft a commercial agreement, and send a written proposal first. CCPIA's ComSOP defines a proposal as "a written presentation of the inspector's proposed services, scope, and fee," and notes it "does not replace" the inspection agreement.

How to price commercial work

There is no published fee schedule for commercial inspections, and you should be wary of anyone who offers one. Build the price from your own numbers, the same way you would price any ancillary service.

Quote every commercial job from a written proposal with a clear scope, a fee and a delivery date. Once you have done a few, you will see patterns by property type that let you quote faster. Until then, estimate hours and multiply by a rate that covers your costs and the income your business needs.

Binsr supports quotes that convert into booked inspections, and pricing rules by square footage or any custom booking question, so a commercial proposal and a residential booking can live in the same account.

How to start without overreaching

1. Start small. A small office, a single retail building or a small apartment property. Mixed-use and small multifamily are the most natural step from residential.
2. Buy and read E2018-24. Then decide whether you will sell E2018-conformant PCAs or a lighter commercial inspection, and name the standard either way.
3. Build your bench. Engineer, roofer, MEP, and an ADA consultant if you plan to offer screenings.
4. Fix the paperwork first. Commercial agreement, proposal template, E&O confirmation.
5. Build a separate template. Keep commercial sections, cost tables and limiting conditions apart from your residential template.
6. Consider training. CCPIA offers commercial training and certification. ASTM publishes the standard. Neither replaces experience on real buildings.

Frequently asked questions

Keep reading

• How to price ancillary inspection services
• Home inspector insurance
• The home inspection agreement
• What a good home inspection report includes
• Insurance inspections as a revenue line
• FHA, VA and USDA inspection criteria

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