A home inspection helps you understand the condition of a property before you become fully committed to the purchase. In Chicago’s Northwest Suburbs, buyers often begin with a general home inspection and consider additional testing based on the home’s age, condition, and features.
Radon testing is commonly recommended in Illinois. A sewer scope can also be helpful, especially for older homes or properties with mature trees.
Your inspection timeline and rights depend on the terms of your purchase contract. Review those deadlines carefully with your attorney and Realtor as soon as your offer is accepted.
Key Takeaways
- A general inspection reviews the home’s accessible structure, roof, electrical system, plumbing, heating, cooling, and other major components.
- Radon testing is commonly recommended for Illinois homes.
- A sewer scope can reveal problems in the underground line between the home and the municipal sewer.
- Older homes may benefit from additional chimney, lead, asbestos, moisture, well, or septic inspections.
- Your inspection deadline is determined by your contract, so schedule inspections promptly.
- The inspector provides information about the home’s condition. The decision to move forward remains yours.
- Inspection findings may lead to repair requests, credits, other negotiations, or additional evaluation, depending on the contract.
- Waiving or limiting an inspection contingency carries risk and should be discussed with your attorney and Realtor.
Why the Inspection Period Matters
It is easy to see the inspection as one more task between the accepted offer and closing. It is much more important than that.
The inspection gives you time to take a closer look at the home’s condition. You can learn about the major systems, identify visible safety concerns, and better understand which repairs may be needed now or in the future.
The goal is not to find a perfect house. Every home will have maintenance items, and older homes often have quirks. The goal is to understand what you are buying so you can make a thoughtful decision.
Inspection and attorney-review deadlines can move quickly. Once your offer is accepted, confirm the exact dates in your contract and begin scheduling right away.
What Does a General Home Inspection Cover?
An Illinois-licensed home inspector performs a visual review of accessible systems and components. Inspectors generally do not open walls, remove finished surfaces, or move the seller’s belongings.
A typical inspection may include the following areas.
Structure and Exterior
- Visible foundation conditions, cracks, settling, and signs of water intrusion
- Grading and drainage around the home
- Siding, trim, masonry, and other exterior finishes
- Driveways, walkways, patios, decks, and steps
- Garage structure, door operation, and visible fire-separation concerns
Roof and Attic
- Visible roof coverings, flashing, gutters, and downspouts
- Attic insulation and ventilation
- Evidence of past or active leaks
- Visible chimney and roof-penetration conditions
Electrical System
- Main electrical panel, breakers, visible wiring, and labeling
- Accessible outlets and switches
- Ground-fault circuit interrupter protection where applicable
- Visible older wiring materials or unsafe modifications
- Smoke and carbon monoxide alarm locations
Plumbing System
- Visible water-supply and drain lines
- Water pressure and drainage
- Leaks, corrosion, and signs of previous repairs
- Water-heater condition and visible venting
- Sinks, toilets, tubs, showers, and other fixtures
Heating and Cooling
- Furnace or boiler operation and visible condition
- Central air-conditioning equipment when weather allows testing
- Visible ductwork or distribution systems
- Thermostat operation
- Approximate age of accessible equipment
Interior Areas
- Visible walls, ceilings, and flooring
- Windows and doors
- Stairs, handrails, and guardrails
- Basements and crawl spaces
- Visible moisture, staining, or ventilation concerns
A good inspector does more than point out defects. They can also explain how systems operate, which items need routine maintenance, and which concerns may require evaluation by a specialist.
Inspection fees vary based on the property’s size, age, location, and features. Ask what is included before scheduling, especially when the home has multiple heating systems, a crawl space, detached structures, or other unusual features.
Why Radon Testing Matters in Illinois
Radon is a naturally occurring radioactive gas that can enter a home through cracks, sump pits, joints, and other openings near the foundation. You cannot see, smell, or taste it.
The U.S. Environmental Protection Agency recommends testing because elevated radon can occur in homes of any age, style, or price range.
Illinois sellers must provide required radon disclosures and share known test results. That does not mean the home has been tested recently, or at all. A seller can only disclose what they know.
The EPA recommends taking action when a test result is at or above 4 picocuries per liter. A qualified radon professional can explain testing conditions, results, and mitigation options.
If the home already has a mitigation system, review:
- Available installation records
- Previous test results
- Post-mitigation test results
- The visible condition of the fan, piping, and monitor
Radon testing is usually performed over a short testing period under specific closed-house conditions. Your inspector or a licensed radon professional can explain how to avoid interfering with the test.
When to Consider a Sewer Scope
A sewer scope uses a small camera to inspect the home’s underground sewer lateral. This is the pipe that carries wastewater from the home toward the municipal sewer connection.
A sewer scope is usually not included in a standard home inspection. It must be requested separately.
This inspection can be especially helpful when:
- The home is older
- The sewer line may be made from clay, cast iron, or another aging material
- Large trees are located near the house or sewer route
- The seller has disclosed backups, slow drains, or previous sewer work
- The neighborhood has mature trees and older underground infrastructure
A camera inspection may reveal roots, cracks, offsets, deterioration, standing water, or a partial blockage. When a concern is found, a plumber or sewer specialist can help determine whether cleaning, repair, lining, or replacement is appropriate.
Even a newer line can have installation problems or damage. The decision to order a scope should be based on the property, available records, and your comfort level.
Other Inspections to Consider
Not every home needs every test. The general inspection can help identify where a specialist may be useful.
Chimney Inspection
A standard inspector can review visible portions of a fireplace and chimney, but the inside of the flue may require a separate chimney inspection.
This may be worth considering when the home has a wood-burning fireplace, visible masonry damage, staining, poor draft, or appliances venting through a masonry chimney.
Lead-Based Paint
Federal law requires specific lead-based paint disclosures for most homes built before 1978. A general home inspection is not the same as a lead inspection or risk assessment.
Specialized testing may be worth discussing if there is peeling or damaged paint, young children will live in the home, or you plan to renovate painted surfaces.
Asbestos-Containing Materials
Some older homes contain materials that may include asbestos, such as certain flooring, pipe insulation, siding, roofing, or textured finishes.
A home inspector may identify materials that look suspicious, but laboratory testing and professional recommendations require the appropriate specialist. This can be especially important before remodeling or demolition.
Moisture and Mold
Visible growth, musty odors, water staining, elevated moisture readings, or repeated basement seepage may justify further evaluation.
The most important step is often identifying the moisture source. Roof leaks, plumbing leaks, poor grading, drainage problems, and inadequate ventilation may all contribute.
Well and Septic Systems
Most homes in the more developed Northwest Suburbs use municipal water and sewer. Properties near the edges of the suburban area may have private wells or septic systems.
These systems require separate testing by qualified professionals. Your attorney, inspector, lender, or local health department may also have specific requirements.
Pest or Structural Evaluation
If the inspector finds evidence of wood-destroying insects, animal activity, foundation movement, or unusual structural changes, a pest professional, structural engineer, or other specialist may be recommended.
What to Do During the Inspection
Attend the inspection when possible.
Being there gives you a chance to see concerns firsthand, ask questions, and learn more about the home. A written report is valuable, but it is easier to understand when you have already walked through the property with the inspector.
During the inspection:
- Ask questions when something is unclear.
- Listen for the difference between a safety concern, a major defect, and routine maintenance.
- Ask about the visible age and condition of the roof, heating system, cooling system, and water heater.
- Learn where the main water shutoff, electrical panel, sump pump, and other important controls are located.
- Take notes or photographs when helpful, while respecting the seller’s belongings.
- Ask which findings need a specialist’s opinion.
Try not to become overwhelmed by the length of the report. Inspectors document many small items because that is their job. Focus first on safety, water, structure, major systems, and repairs that could have a meaningful cost.
How Inspection Findings May Affect the Purchase
What happens after the inspection depends on the contract, the findings, and the advice of your attorney.
Possible next steps may include:
- Requesting that the seller repair specific items
- Requesting a closing credit, subject to lender approval
- Requesting another form of contract modification
- Hiring a specialist for more information
- Accepting the property in its current condition
- Exercising any rights available under the contract
A closing credit can be useful when you would rather choose your own contractor after closing. However, lender rules may limit the amount or type of credit a buyer can receive.
Price reductions and credits also affect the transaction differently. A small price reduction may have very little effect on your monthly payment, while a permitted closing credit can reduce the cash you need at closing. Your lender and attorney can explain the difference.
Most buyers do not ask the seller to address every item in the report. Requests are usually stronger when they focus on material defects, active leaks, safety issues, failed systems, or other concerns that were not obvious before the offer.
Be Careful With Inspection Waivers
In a competitive market, buyers sometimes consider waiving or limiting the inspection contingency.
That decision can reduce your ability to investigate the property, request changes, or use inspection findings in the way a standard contingency might allow. The exact consequences depend on the contract language.
Other approaches may be available, such as:
- Conducting a pre-offer inspection with the seller’s permission
- Keeping an inspection contingency but limiting the type of requests you will make
- Using a higher threshold before requesting repairs or other relief
- Shortening the inspection timeline without eliminating it
These choices carry different risks. Review them with your attorney and Realtor before changing or giving up a contractual protection.
Do Not Forget the Financial Review
The inspection focuses on the physical condition of the home, but the financial details deserve careful review too.
Confirm the property’s PIN, assessment history, tax bills, and current exemptions. Understanding how Cook County property taxes work can help you prepare for the full monthly cost of ownership.
If you are still exploring financing, you may also want to read about IHDA down payment assistance. My Northwest Suburbs neighborhood guide can help when you are comparing communities and home prices.
How to Choose a Home Inspector
Illinois home inspectors must be licensed. You can verify a professional’s license through the appropriate state licensing resources.
Before hiring an inspector, ask:
- Are you currently licensed in Illinois?
- What does the inspection include?
- How long do you expect the inspection to take?
- When will the report be delivered?
- May the buyer attend?
- Do you carry professional liability insurance?
- Do you offer radon testing, sewer scopes, or other services?
- Will you recommend specialists when something is outside your scope?
Professional organizations such as the American Society of Home Inspectors can also be a useful starting point.
Your Realtor may provide several inspector options, and you are always free to research and select your own professional.
Ready to Walk Through the Buying Process?
Every home is different. The age, construction, location, and visible condition can all affect which inspections are worth considering.
Visit myrealtormari.com, watch local home-buying and neighborhood videos on Life in the NW Burbs, email [email protected], or book a time to talk.
Frequently Asked Questions
What does a home inspection cost in Chicago’s Northwest Suburbs?
Inspection fees vary based on the size, age, location, and features of the property. Radon testing, sewer scopes, chimney inspections, and other specialty services are usually priced separately. Ask for a written description of the services and fees before scheduling.
Is radon testing required when buying a home in Illinois?
Buyers are not generally required to test for radon, but testing is commonly recommended. Illinois sellers must provide required disclosures and share known test results. A seller may not have any results if the home has never been tested.
What is a sewer scope?
A sewer scope is a camera inspection of the underground sewer lateral between the home and the municipal connection. It can identify roots, cracks, offsets, blockages, deterioration, and other concerns that are not visible during a general inspection.
Do I need a sewer scope for a newer home?
Older homes and properties with mature trees may have a greater risk of sewer-line problems, but newer lines can also have defects or installation issues. Ask your inspector, plumber, and Realtor whether a scope makes sense for the specific property.
Can I waive the home inspection to make my offer stronger?
You may be able to waive or limit inspection rights, but doing so carries risk. The consequences depend on the contract language. Discuss the decision with your attorney and Realtor before removing or changing an inspection contingency.
What happens if the inspection finds a serious problem?
Your options depend on the purchase contract and the timing of the discovery. You may be able to request repairs, seek a permitted credit, obtain a specialist’s opinion, accept the condition, or exercise other contractual rights. Your attorney should guide the formal response.
How long is the home inspection period in Illinois?
Illinois does not have one inspection period that applies to every residential purchase. The deadline is established by the contract and may be modified during negotiations. Confirm the exact date immediately after your offer is accepted.
Does a home inspector decide whether I should buy the house?
No. The inspector explains the visible condition of the home and identifies concerns within the scope of the inspection. You decide whether the property fits your budget, comfort level, and plans with guidance from your attorney, Realtor, lender, and any needed specialists.
