Home Inspection Checklist for Buyers: A Guide to Major Systems

Below you’ll find a helpful guide to what a home inspection covers and the key areas inspectors assess for safety and functionality.

In the market for a home loan? Newrez mortgage experts are ready to show you great options that support your homeownership goals.

Why a Thorough Home Inspection Matters

A professional home inspection takes a close look at the systems that keep a home safe, comfortable and structurally sound. Inspectors are trained to spot issues that may not be obvious at first glance—things like hidden damage, aging systems or safety hazards that could affect long-term costs. During an inspection, they typically assess:

• Structural integrity
• Roofing and exterior systems
• Plumbing systems
• Electrical systems
• HVAC systems
• Interior components
• Appliances and fixtures
• Drainage and grading
• Insulation and ventilation

Each of these areas are critical to a home’s safety, livability and long-term value, which is why understanding their condition is important for buyers.

How Home Inspections Differ from Appraisals

Although both appraisals and inspections occur during the buying process, they serve different purposes:

• Home Inspections Evaluate Condition: A home inspection is meant to protect the buyer by providing a detailed assessment of the property’s physical condition. The buyer can use the resulting report to negotiate repairs and/or plan for future maintenance.
• Appraisals Determine Market Value: An appraisal is an evaluation of the home’s market value based on comparable sales, location and property characteristics. It’s meant to protect the lender by helping the lender determine how much they’re willing to finance for the property.

Finding a Licensed Home Inspector

Hiring an inspector who will do a thorough job of evaluating a property is extremely important. A great inspector doesn’t just check boxes, but helps you understand the true condition of the home you’re about to invest in. Before you hire the first person recommended to you, take a moment to verify their qualifications and make sure they’re a good fit for your needs.

1. Check the Reviews

Talk to friends and family you trust about inspectors they liked, and visit local online forums to hear about people’s experiences with area inspectors. Websites like Nextdoor^® can offer useful insights into local professionals directly from your neighbors. You’re looking for someone who is thorough, communicates well and achieves tasks in a timely manner.

2. Look for Certifications

Professional associations like the American Society of Home Inspectors^® (ASHI) or the International Association of Certified Home Inspectors^® (InterNACHI) certify professionals who meet specific training and testing standards. Some state organizations also have databases that you can search to find professionals who are certified.

3. Verify Insurance

Make sure the professional you select has insurance to protect you in the event they make a mistake. A home inspector should carry professional liability insurance or “errors and omissions (E&O) insurance and general liability insurance in case of accidental damage.

4. Align with Your Needs

It could be especially helpful to find home inspectors with experience looking at the type of home you’re purchasing, whether that’s an older home, a property built with unique materials or a home in a flood-prone area. Be sure to ask inspectors about what their inspection process includes, what additional services they might offer (such as thermal imaging or sewer scope inspections) and whether you can accompany them during the inspection.

Once you’ve chosen a qualified inspector, it’s helpful to understand what they’ll actually be looking for during the inspection. Knowing the major components they evaluate can help you ask better questions and make sense of the final report.

Structural Components Inspection Checklist

The structural elements of a home form the foundation of the home’s integrity and keep it standing over time. Issues with the structure can be some of the costliest to repair, so inspectors pay close attention to signs of stress, movement or water damage.

Foundation

Your inspector will look for signs that the foundation is shifting, cracking or allowing moisture inside. Common red flags could include:

• Wide cracks
• Horizontal or stair-step cracking
• Evidence of settling or sinking
• Moisture intrusion
• Efflorescence (white powder residue left by water)
• Bowing or leaning basement walls
• Pier and beam stability
• Slab movement or unevenness

Framing and Load-Bearing Elements

These components support the weight of the home. Inspectors check for:

• Sagging beams
• Rotting or damaged wood
• Termite or pest activity
• Improper alterations
• Missing or inadequate supports

Floors, Walls, and Ceilings

These surfaces sometimes reveal early signs of structural or moisture issues. Inspectors often check for:

• Uneven floors
• Soft spots that can indicate rot
• Cracks near doors/windows
• Ceiling stains indicating leaks

Roof Inspection Checklist for Home Buyers

The roof protects the entire home from weather and moisture. Because roof replacements can cost tens of thousands of dollars, inspectors look closely for signs of wear, damage or aging that could affect your long-term costs.

Roofing Materials

Your inspector will examine the visible condition of the roof to evaluate how well it’s holding up against the elements. They typically look for:

• Missing, cracked or curling shingles
• Loss of protective granules
• Soft spots that could indicate rot
• Exposed underlayment
• Damaged or loose flashing around chimneys, vents or skylights
• Moss growth that can trap moisture

Roof Age and Lifespan

Different roofing materials (such as asphalt, metal and tile) last for different lengths of time, so knowing the roof’s age can help you plan for future expenses. Inspectors usually try to confirm the installation date and whether the roof’s warranty can transfer to you as the new homeowner.

Gutters and Drainage

Proper drainage protects both the roof and your home’s foundation. Inspectors typically check that:

• Gutters are sloped correctly
• There are no clogs
• Attachments are secure
• Downspouts direct water away from your home’s foundation

Plumbing System Inspection Checklist

Plumbing issues can lead to leaks, water damage and expensive repairs, so inspectors pay close attention to how water moves through the property.

Water Supply Lines

Your inspector will check the pipes that bring fresh water into the home. They’re looking for conditions that could cause leaks or low water pressure, including:

• Older galvanized pipes that could corrode
• Polybutylene piping, which can be brittle and leak-pone
• Leaks under sinks or around fixtures
• Water pressure consistency
• The condition and accessibility of the main shutoff valve

Drain, Waste and Vent (DWV) System

This part of the plumbing system removes wastewater and prevents sewer gasses from entering the home. Inspectors look for:

• Slow-draining sinks, tubs or showers
• Sewer odors inside or outside the home
• Access to cleanouts for maintenance
• Evidence of prior backups or repairs

Water Heater

A water heater affects both comfort and safety, so inspectors usually check for:

• Age
• Rust or corrosion on the tank
• Leaks around pipes or connections
• Proper operation of the temperature pressure relief valve
• Sediment buildup that could reduce efficiency

Electrical System Inspection Checklist

Electrical defects can create fire hazards, so inspectors take care to look at how power is delivered and if everything meets modern safety standards.

Main Service Panel

The service panel is the heart of the home’s electrical system. Inspectors typically look for:

• Amperage rating to ensure the system can handle modern electrical demands
• Double-tapped breakers (two wires connected to a breaker designed for one), which can present a fire risk
• Corrosion, which can indicate moisture problems
• Proper labeling of circuits
• Aluminum wiring, which may require special connections or upgrades

Wiring and Outlets

Inspectors look at the wiring throughout the home and test outlets to make sure they’re functioning safely:

• GFCI outlets in kitchens, bathrooms and garages to protect against shock
• AFCI protection to reduce fire risk
• Loose or damaged outlets
• Two-prong outlets, which may indicate older wiring
• Flickering lights, which could mean loose connections or overloaded circuits

Exterior Electrical

Outdoor electrical components must withstand weather and remain safe to use. Inspectors evaluate:

• Weatherproof covers
• Proper grounding to prevent shock hazards
• A secure meter base where power enters the home

HVAC System Inspection Checklist

Heating and cooling systems significantly affect comfort, energy efficiency and operating costs. Inspectors check to make sure these systems are safe, functional and not nearing the end of their lifespan.

Heating System

Your inspector evaluates the furnace or heating unit to understand its condition and remaining life:

• Furnace age
• Cracks in the heat exchanger, which might allow dangerous gases to escape
• Pilot light color—a steady blue flame usually means proper combustion
• Carbon monoxide risks
• Condition of the air filter, which affects efficiency and air quality

Air Conditioning

Cooling systems are also inspected for performance and efficiency, including:

• Condition of the outdoor condenser coils
• Signs of refrigerant leaks, which can reduce cooling power
• Airflow consistency throughout the home
• Thermostat functionality

Ductwork

Ducts carry heated or cooled air throughout the home, so their condition directly affects comfort and energy costs. Inspectors check for:

• Leaks that let air escape
• Insulation gaps that can reduce efficiency
• Mold growth that could indicate moisture issues
• Blockages that restrict airflow

Interior Inspection Checklist

Inspectors look for signs of wear, moisture issues and problems that could lead to repairs down the road.

Doors and Windows

Properly functioning doors and windows help with energy efficiency and security. Inspectors check:

• Smooth operation
• Broken seals
• Drafts that may indicate poor insulation
• Rotting or damaged frames

Kitchen and Appliances

Kitchens tend to get heavy daily use, so inspectors make sure major appliances are working as expected, including:

• Range and oven functionality
• Dishwasher drainage
• Refrigerator cooling performance
• Vent hood operation to confirm it removes smoke effectively

Bathrooms

Bathrooms can attract moisture-related issues, so inspectors look for:

• Cracked or loose tiles, which can allow water to seep into walls/floors
• Caulking integrity around tubs, showers and sinks
• Proper exhaust fan ventilation to prevent humidity buildup
• Water pressure

Exterior Inspection Checklist

The exterior of a home is your first line of defense against water intrusion, pests and long‑term structural damage. Inspectors want to see that the home is protected from the elements.

Siding

Siding helps shield the home from moisture and weather. Inspectors look at:

• Cracks that could let water in
• Rot on wood siding
• Loose or missing panels
• Moisture damage

Landscaping and Grading

The way the ground slopes around the home plays a big role in preventing water problems. Inspectors typically check for:

• Proper grading, where the soil slopes away from the foundation
• Standing water near the home, which can signal drainage issues
• Tree root intrusion, which could damage foundations, sidewalks or underground pipes

Driveways and Walkways

These areas affect safety and drainage. Inspectors look for:

• Large cracks that could mean settling
• Trip hazards from uneven surfaces
• Water pooling, which could lead to ice hazards in colder climates

Insulation and Ventilation Checklist

Proper insulation and ventilation help keep the home comfortable, energy‑efficient and protected from moisture problems. Inspectors look for signs that the home is sealed well and breathing the way it should.

Insulation and Airflow

Energy efficiency and moisture control depend on proper insulation. Your inspector will check:

• Attic insulation depth to see if it meets recommended R-values for your region
• Soffit vents to ensure they aren’t blocked
• Ridge vent functionality to make sure hot air can escape the attic
• Bathroom vents that exhaust outdoors
• Crawl space vapor barriers to help prevent mold or wood rot

Pest and Environmental Inspection

Pests and environmental hazards can cause structural damage. Inspectors look for early warning signs so you can address issues before they become costly.

Termites and Wood-Destroying Organisms

Inspectors look for:

• Mud tubes along foundation or walls
• Hollow wood sounds
• Frass, a sawdust-like material left behind by certain pests

Mold and Moisture

Moisture problems can lead to mold growth, which affects indoor air quality. Inspectors check for:

• Musty odors
• Visible mold spots on walls or ceilings
• High humidity levels, especially in basements, bathrooms or crawl spaces

Radon

Radon is a naturally occurring gas that can enter homes through the foundation. Because it’s odorless and invisible, testing is the only way to detect it. Radon testing recommended in regions where levels are known to be higher.

Staying Safe and Healthy in Your Home

A home inspection is an opportunity to truly understand the home you’re buying. When you know what inspectors are looking at and why it matters, you can ask smarter questions, anticipate future maintenance and avoid costly surprises.

Looking for the right mortgage for you? Newrez offers a full stack of loan products for a wide range of circumstances. Chat with one of our mortgage experts today.

Nextdoor^® is a registered trademark of Nextdoor, Inc. The American Society of Home Inspectors^® is a registered trademark of the American Society of Home Inspectors, Inc. International Association of Certified Home Inspectors^® is a registered trademark of International Association of Certified Home Inspectors.