What Do You Have to Do to Become a Home Inspector
The question of what do you have to do to become a home inspector is best answered as a sequence of verbs, not a list of qualifications. The path runs from researching your state’s rules through enrolling in a course, completing required hours, sitting for an exam, passing a background check, registering a business entity, securing errors-and-omissions insurance, and committing to continuing education. Each step depends on the one before it. This guide walks through the action sequence in the order most new inspectors actually take it, with notes on where Colorado and other Front Range states fit into the national picture and which steps trip people up most often.
What do you have to do to become a home inspector, in order
The shortest honest answer is: research your state’s requirements first, then enroll in an inspector training program, log the required field hours, pass a recognized exam, set up a business, and carry insurance. The order matters because skipping research and enrolling in a generic course can leave you with hours that do not count toward licensure in your state. The action verbs to memorize are research, enroll, complete, sit, pass, register, secure, and continue.
This action-first framing differs from a requirements checklist. A checklist tells you what the rules say. A sequence tells you what to do tomorrow morning. The sibling guide on what you need to be a home inspector handles the qualifications angle; this guide handles the steps in the order that prevents wasted money.
Step 1: research your state’s rules before spending a dollar
Roughly half of U.S. states license home inspectors, and the requirements vary widely. Colorado does not currently require a state license to perform residential home inspections, but Front Range buyers and lenders still expect ASHI or InterNACHI credentials before they will refer business. Texas, North Carolina, and Florida do require state licensure with their own classroom and field-hour minimums. Wisconsin requires 40 hours of pre-license education plus an exam. Illinois requires a state license, exam, and supervised inspections. Spend an hour on your state real-estate or regulatory-agency website before enrolling in any program.
Note the minimum classroom hours, field hours, exam requirement, background-check rule, and bonding or insurance minimums. Write each down on a single sheet of paper. That sheet becomes the spec for the rest of your plan. If you live near a state border and might take inspection work in either state, research both regulators. Reciprocity between states is rare.
This single step prevents the most common new-inspector mistake: enrolling in a generic online course that does not satisfy a state’s pre-license education requirement. If your state requires 80 hours of classroom plus 25 supervised field inspections, you need a program that documents both in a format the regulator accepts. Asking the regulator’s licensing office for a list of approved providers is faster than calling courses one by one.
Step 2: enroll in a recognized training program
Once you know your state’s rules, enroll in an inspector education course offered by an approved provider. The two largest national programs come from the American Society of Home Inspectors (ASHI) and the International Association of Certified Home Inspectors (InterNACHI). Both publish curricula that meet most state pre-license requirements, and both offer online plus optional in-person components.
Expect 60 to 120 hours of coursework covering structure, exterior, roofing, plumbing, electrical, HVAC, interior, insulation and ventilation, fireplaces, and report writing. Tuition runs $300 to $1,500 depending on whether you bundle field-training modules and exam prep. Some providers include free retakes of practice exams; others charge for each attempt. Compare total cost, not just the headline price.
What the coursework actually covers
The Standards of Practice published by ASHI and InterNACHI both organize the inspection into systems. You learn to look at each system, identify its components, and report what is observable without dismantling anything. Coursework also covers what is outside the standard scope, like geotechnical conditions, code enforcement, and warranty work. Understanding the scope limits is just as important as understanding the systems. Half of the complaints filed against inspectors trace back to inspecting something the SOP excludes and missing the disclaimer in the report.
Step 3: complete the required field hours
Classroom learning gets you the vocabulary. Field hours get you the eye. Most states with licensing require 25 to 250 supervised inspections before you can sit for the licensing exam. InterNACHI runs a free online training that lets you log mock inspections, and many ASHI chapters host ride-alongs with practicing inspectors who let new candidates shadow real jobs.
In Colorado, where state licensing is not required, the ASHI Certified Inspector (ACI) credential requires 250 paid fee-based inspections before the credential is awarded. That field-hour bar is the practical entry point even where the law does not demand it, because most buyers and agents on the Front Range will not refer business to an inspector without one of the major credentials behind their name.
Field hours teach things books cannot: how to crawl an attic without falling through ceiling joists, how to test 80 outlets in a four-bedroom house in 12 minutes, how to spot reverse-polarity wiring without removing covers, how to read a furnace label that has been painted over twice. Plan to ride along with at least three different inspectors so you see different report styles and inspection paces.
Step 4: sit for the National Home Inspector Examination
The National Home Inspector Examination (NHIE) is the credential most states and most professional associations accept. It is a 200-question, four-hour multiple-choice test administered at Pearson VUE testing centers. Registration costs $225. A passing score is roughly 75 percent, though the actual scaled-score cut varies by exam form.
InterNACHI also offers its own free Online Inspector Examination, and ASHI uses the NHIE for its ACI credential. Some states accept either; others require the NHIE specifically. Check your state’s rule before scheduling. Study materials include the ASHI study guide, the InterNACHI online review course, and the NHIE practice exam from the Examination Board of Professional Home Inspectors. Plan two to four weeks of focused study after finishing coursework.
Step 5: pass any background check your state requires
Licensing states typically require a fingerprint-based background check through their state law-enforcement agency or the FBI. The check looks for fraud, theft, and violent-crime convictions that would disqualify someone from entering homes professionally. Costs run $30 to $80. Processing takes two to six weeks. Submit fingerprints early so the results are back before you need them for license application.
Colorado does not require a state background check for home inspectors, but most E&O insurance carriers run their own check before binding a policy. Real-estate brokerages that maintain a referral list also tend to require disclosure of any convictions, even in non-licensing states. Treat the background check as part of the credential package regardless of state law.
Step 6: register your business entity
Most working inspectors operate as an LLC or sole proprietorship. An LLC separates personal assets from business liability, which matters once you start writing reports that other people rely on for six-figure purchase decisions. Filing fees vary by state: Colorado charges $50; Texas charges $300; California charges $70 plus an $800 annual franchise tax. Annual reports and renewal fees add $10 to $300 per year.
Register a business name, get an EIN from the IRS, open a separate business bank account, and obtain any local business licenses your city or county requires. Some Front Range counties require a separate occupational license for service businesses. Check with your county clerk before printing business cards.
Step 7: secure errors-and-omissions (E&O) and general liability insurance
E&O insurance covers claims that you missed something a competent inspector would have caught. General liability covers physical damage you cause during the inspection — a broken tile, a damaged shingle, a knocked-over plant. Most lenders and real-estate brokers will not refer clients to an uninsured inspector. Combined policies run $1,200 to $2,500 per year for new inspectors with no claims history.
Some E&O carriers require ASHI or InterNACHI membership before binding. That tightens the sequence: associations first, insurance second. Read the policy exclusions carefully. Mold, radon, asbestos, lead, and wood-destroying-organism work are often excluded unless you add specific endorsements for each ancillary service.
Step 8: commit to continuing education
Most licensing states require 14 to 24 hours of continuing education per renewal cycle. ASHI requires 20 hours per year for ACI status; InterNACHI requires 24 hours every two years. Continuing education covers code updates, new building materials, evolving inspection technology, and report-writing standards. The cost runs $100 to $400 per year depending on whether you take free webinars or paid in-person classes.
Continuing education is also where you specialize. Add a radon-measurement certification through the EPA-recognized National Radon Proficiency Program, an InterNACHI mold or asbestos course, or a WDO (termite) certification. Each specialty adds an upsell to the base inspection. Radon adds $150 to $250 per job; WDO adds $75 to $150; sewer-scope adds $200 to $300. These add-ons often determine whether a new inspector reaches a sustainable income within the first 12 months.
How long does the full sequence take
From research to first paid inspection, the realistic timeline is three to nine months. Coursework: one to three months. Field hours: one to four months. Exam scheduling and result delivery: two to six weeks. Business setup and insurance: two to four weeks. People who treat it as a full-time effort finish in three months. People doing it nights and weekends typically take six to nine months.
For more context on the credentialing layer that buyers actually look at, the overview of hiring a home inspector covers what credentials buyers actually look for, which informs which credentials are worth pursuing first. Aligning your training path to the credentials your local market values keeps the sequence efficient.
Common mistakes that cost new inspectors time
Enrolling before researching your state’s rules is the most expensive mistake; some online courses do not satisfy state pre-license requirements, and the hours have to be redone. Skipping ride-alongs is the second; you can pass the NHIE without ever walking a real attic, and your first paid inspection will be miserable. Underpricing the first 20 inspections is the third; new inspectors often charge $150 to compete on price and then can never raise rates with referral partners they trained to expect low quotes.
A fourth mistake is buying expensive equipment too early. A thermal camera, sewer scope, and drone together can run $4,000 to $8,000 before insurance and training are paid. Wait until your tenth paid inspection before adding ancillary equipment. By then you know which add-on services your local market actually wants, and you can buy the right tool for that demand.
References
- ASHI Standards of Practice and ACI credential — American Society of Home Inspectors
- InterNACHI education and training requirements — International Association of Certified Home Inspectors
- EPA radon program and proficiency certification — Environmental Protection Agency
- ICC building-code resources for inspectors — International Code Council
Home inspector exam prep & study picks
Studying for the National Home Inspector Examination (NHIE) or a state licensing exam? These are the study guides and field references aspiring inspectors rely on.
| Product | Why | Buy |
|---|---|---|
 NHIE Exam Prep Study Guide | Practice questions + content review for the national exam. | Amazon — $28.55 |
 Principles of Home Inspection (Carson Dunlop) | Widely used training reference series. | Amazon — $159.00 |
 Code Check Complete | Illustrated building-code field guide inspectors carry. | Amazon — $57.25 |
 Home Inspector Starter Tool Kit | Flashlight, outlet tester, and basics to get started. | Amazon — $59.81 |