How to become a home inspector.

What a home inspector actually does.

A home inspector performs a visual, non-invasive examination of a home's readily accessible components and systems, then delivers a written report describing the observed condition and any material defects. The report goes to the buyer or the seller who paid for the inspection, and it often gets shared with the real estate agent and, on the buyer side, used in the response phase of the purchase contract.

A general home inspection typically covers the site, roof, exterior, structure, insulation and ventilation, electrical, plumbing, heating, cooling, interior, and installed appliances. Specialty inspections (radon, sewer scope, pool and spa, wind mitigation, four-point, commercial) sit on top of that base.

The job is roughly one-third field work, one-third report writing, and one-third running the business. New inspectors underestimate the last two thirds and burn out. The rest of this guide is about setting them up on day one.

Check your state licensing requirements first.

Licensing is set state by state, and the rules are not the same. 35 states use the National Home Inspector Examination for licensing, and most states regulate home inspectors in some way. The rest leave it to the market and to the associations. Start at your state's regulatory board (often Department of Commerce, Real Estate Commission, or a dedicated Board of Home Inspectors) and confirm the following:

• Pre-license education. How many hours are required, which providers are approved, and whether online-only training counts.
• Exams. Whether your state requires the National Home Inspector Examination (NHIE), a state-specific exam, or both.
• Supervised field training. Some states require supervised field training; New York requires 40 hours of it.
• Insurance. Many states mandate errors-and-omissions insurance, general liability, or both, at minimum coverage levels.
• Standards of Practice. Your state may adopt a specific Standards of Practice (SoP) by reference. The two most common are the ASHI SoP and the InterNACHI SoP.
• Continuing education. Renewal periods and required hours per cycle.

Do not skip this step. Training approved in one state may not count in another. Confirm the approved-provider list before you enroll.

Choose a training path.

There are three common paths, and they overlap:

State-approved provider training.

Community colleges, trade schools, and private schools offer state-approved home inspection programs. The advantages are proctored exams, in-person instructors, and a paper trail your state board already recognizes.

Association training.

InterNACHI and ASHI both run training programs and offer certifications. InterNACHI's Certified Professional Inspector (CPI) program and ASHI's Certified Inspector (ACI) credential are widely referenced. Check whether your state accepts their coursework toward the pre-license education requirement before committing.

Direct study plus mentorship.

Some experienced trades workers self-study for the exam and pair it with a paid mentorship or ride-along program under a working inspector. This can be the fastest path if your state allows it and you can find an inspector willing to train you.

No matter which path you pick, your training is only as good as the practical judgment it builds. Reading is not the same as walking a crawlspace with a flashlight.

Get real field training.

Book paid ride-alongs with a working inspector before you take a job of your own. Ten inspections shadowing a good inspector will teach you more about safety findings, defect classification, and client communication than a hundred hours of reading. Ask to:

• Run the tools yourself when the inspector lets you: moisture meter, receptacle tester, infrared, ladder, flashlight.
• Write parallel findings in your own words for each issue the inspector calls out, then compare.
• Sit in on the walkthrough at the end. Explaining a finding to a nervous first-time buyer is a real skill.

If your state requires supervised inspections, keep documentation from day one. Boards want a signed log with addresses, dates, and the supervising inspector's license number.

Set up the business side.

A functioning business needs the following, in roughly this order:

• Business entity. LLC is the most common structure for solo inspectors. Register with your state and get an EIN from the IRS. Talk to an accountant about S-corp election once you are profitable.
• Insurance. Errors-and-omissions (E&O) covers your professional judgment. General liability covers property damage on site. Expect about $1,300 to $3,200 a year for both, sometimes less if you package them through an association.
• Tools. Flashlight, ladder, moisture meter, receptacle tester with GFCI trip, IR thermometer or thermal imager, gas leak detector, personal protective equipment, and a good pair of work boots.
• Software. Inspection software runs the report, scheduling, agreements, payments, and your website. On the paid platforms that is $1,068 to $1,308 a year for one inspector's core plan, before add-ons. It does not have to be. HomeInspector.com is free, with unlimited reports, iOS and Android apps, agreements, payments, and a custom website builder included.
• Agreements and templates. Your pre-inspection agreement is the single most important document you write. Have an attorney review the template your association or software provider gives you before you send it to a client.

Line up your first clients.

Real-estate agents drive most residential inspection referrals. Direct buyer marketing is a longer game. In the first ninety days:

• Introduce yourself in person to five to ten agents in your service area, ideally through a warm introduction. Bring a one-page overview of what you inspect, your turnaround time, and how you handle repair requests. Do not spam the office manager.
• Publish a real website with your service area, your services and pricing, and a sample report link. Consumers and agents both check before they call.
• List your business on Google Business Profile and on the local real-estate MLS or association vendor directories where inspectors are eligible.
• Offer a small number of free or discounted inspections to family and friends to build your report library, your reviews, and your confidence. These are not paid jobs, but they are real work you can reference.

Realistic timeline and cost.

A working ballpark for the whole path:

• Weeks 1 to 4. State research, choose a training path, enroll.
• Weeks 4 to 12. Complete pre-license education, book exams, start ride-alongs.
• Weeks 12 to 16. Pass the NHIE or state exam, apply for the license, set up the LLC and insurance, buy tools.
• Weeks 16 to 24. First paid inspections, agent introductions, first fifty reports.

First-year cash outlay for a solo inspector who does not overbuy tools typically lands between $2,500 and $9,000. Paid software would add $1,068 to $1,308 a year for one inspector's core plan, before add-ons. The rest of the money is time.

Once you are working, the next question is how much you can make. That is covered in the home inspector salary guide.