A home inspection in Illinois is a visual check of the parts of a house a person can reach and see, done by a licensed inspector and delivered as a written report within two business days. It is not a guarantee, and it is not a look behind the walls. That distinction matters more in Rockford than in a lot of places, because the city's housing is old. Knowing what the inspector will and will not cover is how you decide what else to pay for.

We have been helping people buy and sell homes in Rockford since 1923, and most of our buyers walk into an inspection hoping for a clean bill of health. What they get is a document that sorts a house into what works, what is unsafe or broken, and what could not be checked. This article explains how that sorting works under Illinois rules, what the age of Rockford's housing means for your inspection, and how to handle the timing. When you have a house in mind, our page of homes for sale in Rockford is the place to start looking.

The rules cited here come from the Illinois Home Inspector License Act and the standards the state adopted under it. The housing numbers come from the City of Rockford's own housing study. We read all of them on October 7, 2026.

What an Illinois Inspector Is Required to Check

Start with who can do the job. Illinois law makes it unlawful to act as a home inspector, or to advertise as one, without a license from the Department of Financial and Professional Regulation. A first offense is a Class A misdemeanor, and later offenses are felonies. Licensed inspectors also have to carry general liability insurance. You can look up a license through the department's online license lookup, which lists home inspector as a license type. Check the name and number on your contract before the inspection day, not after.

The state's Standards of Practice then set the floor for what the inspection covers. The key phrase is in the definition of the word inspect. To inspect means to visually examine the readily accessible systems and components of a building, using normal operating controls and opening readily accessible panels. Readily accessible means the inspector can see it without moving your belongings, taking things apart, or doing anything destructive or risky. An inspector will not tear out a finished wall. An inspector will not move a stack of boxes in front of a panel. When something blocks the view, the report is supposed to say so.

Before any inspection, the inspector and client sign a written contract. The standards require it to name the purpose of the inspection and the date, the inspectors and their license numbers, the fee, and the list of systems to be inspected. It must also say the inspection will meet the state standards, and it must spell out the limits. Those limits can include parts that are not readily accessible, the expected life of any component, the cause of a repair, systems that are shut down, unsafe areas, engineering or environmental services, future conditions and warranties. Read this contract. It is the actual scope of what you are paying for, and a system left off the list is a system nobody checks.

Inside that scope, the standards name what gets examined. For the structure and foundation, the inspector looks at the foundation and framing, and reports how the basement or crawl space, attic, floors, walls, ceilings and roof were examined. The inspector reports visible signs of water and moisture, and any infestation that significantly affects the structure. For the exterior, the list includes wall covering, the exposed foundation, flashing, doors and windows, porches and steps with their railings, and the grading, drainage and retaining walls on the lot if they are likely to affect the building. For the roof, it covers the covering, drainage, flashings, skylights, chimneys and penetrations.

The plumbing section covers the interior water supply and distribution, including fixtures, piping, drains, waste and vent systems, plus the water heater, fuel storage and distribution, and sump pumps. The inspector reports where the main shut-off valve is, the piping materials, the water heater's type and capacity, and any leaks. Electrical covers the service entrance, the panels including their interiors, the wiring, the breakers or fuses, and a representative number of lights, switches and outlets, plus ground fault protection. The inspector describes the amperage and voltage of the service and the wiring method. Heating, cooling, insulation, ventilation, interior surfaces, garage door openers and fireplaces round out the list.

Two items on the electrical list deserve attention. The standards require the inspector to report solid conductor aluminum branch wiring if it is present. They also require a report of any failure to comply with Illinois's carbon monoxide alarm and smoke detector laws. Both are easy to overlook, and an inspector is expected to flag them.

Finally, the standards define a "significantly deficient" item as one that is unsafe or not functioning. For each such item, the report has to give a reason, and has to say whether the problem should be corrected or monitored. It also has to list any system the inspector was supposed to check but could not, with the reason. A line that says an area was not inspected is information, not a pass. Treat it as a question to chase.

How Rockford's Older Housing Changes the Inspection

The City of Rockford's housing study counted 44,024 residential parcels with structures built in known years. Only 2,321 of them were built in 2000 or later. A little over 13,000 date from 1940 through 1959, which is about 30% of the total and the largest single group. Another 8,445 were built from 1920 through 1939, and 5,405 from 1900 through 1919. Add up everything built in 1939 or earlier and you get about 13,850 houses, or roughly 31%. Add the 1940s and 1950s and about 61% of the counted parcels are more than 65 years old. The study left out another 5,429 parcels whose build year is unknown.

Those numbers describe the city's stock as a whole. They say nothing about any one house, and a house of any age can be well kept. What they do tell you is that the odds favor the older end, and an older house tends to carry its original systems or layers of repairs. That is the reason a general inspection is a starting point and not an ending point. Four topics come up most often in houses of this age, and each has a limit built into the inspection that you should know about.

Start with the basement. The standards ask the inspector to report visible signs of water and moisture penetration, and to report on the methods used to examine the basement or crawl space. They do not require the inspector to see through a finished wall or a pile of stored items, and they do not predict the next heavy rain. The City's stormwater page tells buyers to research wet soils that could flood a basement, along with floodplain status and insurance costs, before they purchase. It also notes the latest flood maps took effect on February 17, 2016, and that building in local floodplains has been restricted since the late 1970s. A dry basement on inspection day tells you about that day. Ask the seller what the lowest level looks like after a hard storm, and check the sump pump the standards tell the inspector to examine.

Next comes the sewer line. In Rockford, the City's sewer section handles storm sewers only. It handed sanitary sewers to the Four Rivers Sanitation Authority in 1991. Four Rivers says the homeowner maintains the service connection, which is the line from the property to the main. If a backup happens and the authority's main line is clear, the homeowner hires and pays a contractor to clear the service line. Four Rivers lists tree roots, debris, collapsed or bent pipes and grease among the causes of a clogged line. Look again at the plumbing list above. It names the drains, waste and vent systems inside the house. It does not name the buried line that runs out to the street. A standard inspection, then, may not examine a pipe that can be costly to repair. The standards say inspectors may offer extra services beyond the minimum, so ask your inspector, before you hire, whether the buried line can be examined, and if not, whether a plumber can do it. Put that request in the written contract.

Electrical systems are the third topic. The standards list the wiring methods an inspector identifies, and the list includes modern sheathed cable, armored cable and knob and tube. The report describes the wiring method it finds and the capacity of the service. It is not a full load calculation, and it cannot see inside a wall. If a house from the early part of the last century shows older wiring, a licensed electrician can tell you what updating it would involve. The inspector's note is the signal to call one.

The fourth topic is paint. The EPA says lead-based paint was banned for use in homes in 1978 and is still present in millions of homes. Federal rules about lead paint disclosure apply to most housing built before 1978, and they give a buyer a 10-day period to arrange a paint inspection or risk assessment, which the parties can lengthen or shorten in writing. The buyer can also waive it. The Illinois home inspection standards do not name lead paint testing as part of the inspection, so a lead paint inspection is its own item, done by a certified specialist. The same goes for radon, which the standards do not list either. We cover radon testing in a separate article.

One last check belongs on the list. The City of Rockford says any active building permit requires a final inspection, and its examples include residential roofing, siding, furnace work and meter swaps. When a seller says the roof or furnace was replaced, ask for the permit and look at whether the final inspection was completed. A permit file is the nearest thing to a record that the work was reviewed.

Timing: The Contract, the Report and the Clock

The date your inspection has to be finished is set by your purchase contract, not by a statute we could point to. That is why the first thing to do after your offer is accepted is to read the inspection paragraph and write the deadline on your calendar. We are not going to quote a day count here, because it comes from the document you signed. Your agent and your attorney can tell you exactly what yours says and what happens if the date passes.

What state rules do control is how fast the report arrives. An inspector must deliver the written report within two business days after the completed inspection. That sounds comfortable until you count backward from a contract deadline. An inspection scheduled on the last day of the window can leave you reading the report after the window closes. Whichever of the homes for sale in Rockford you choose, book the inspector the moment your offer is accepted, ask for the earliest slot, and ask when the report will arrive. If you also plan a lead paint inspection, the federal 10-day period can run alongside, and both should be on one calendar.

Plan for extra specialists to take extra days. If the inspector writes that a system needs further evaluation, the standards define that as examination by a qualified professional beyond what the inspection provides. A roofer, an electrician, a plumber or a foundation specialist may need time to schedule a visit. Line those visits up in the same week as the inspection, and your window will have room for them.

Your presence matters too. The inspector writes what can be seen and cannot talk about what you did not ask. Walk the house with the inspector, and ask questions as you go. You will learn where the main water shut-off is, how the panel is labeled, and what the inspector means by a word like "monitor." A report is more useful when you have seen the thing it describes.

A last practical point about negotiating. Not every item in a report is worth a request. The standards use "significantly deficient" for things that are unsafe or not working, and that group is where a repair request is easiest to defend. A cosmetic flaw or a worn but working part is a different conversation. Decide with your agent which findings are deal points and which are the normal costs of owning a house of that age.

Bottom Line

Hire a licensed inspector, read the contract so you know what is and is not covered, and expect a written report within two business days. In a city where roughly three of every five counted houses were built in 1959 or earlier, treat the report as a starting point. Ask about the buried sewer line, since the standards do not require it. Ask what the basement does in a storm. Ask for permits on major work, and handle lead paint and radon as their own tests. Then match every deadline in your contract against the report date and the specialists' calendars. When you are ready to compare houses, browse homes for sale in Rockford and bring this list along. For the wider picture of how Illinois real estate works, our Illinois Real Estate Guide collects our articles in one place.

A report raises as many questions as it answers. These are the ones Rockford buyers bring to us most often.

Frequently Asked Questions