A home inspection is a professional visual examination of a residential property's accessible systems and physical components conducted by a trained and typically licensed inspector. The inspection is ordered by the buyer — usually after an offer is accepted and during the due diligence period — to obtain an independent assessment of the property's condition before the transaction closes. Inspection findings inform the buyer's decision to proceed, request repairs or credits, renegotiate the purchase price, or invoke an inspection contingency to exit the contract.
Scope of a Standard Home Inspection
Home inspectors follow standards of practice published by organizations such as the American Society of Home Inspectors (ASHI) or the International Association of Certified Home Inspectors (InterNACHI). A standard inspection is visual and non-invasive — inspectors observe accessible components without opening walls, moving furniture, or performing destructive testing.
Structural and exterior systems:
- Foundation condition (visual examination for cracks, settlement, moisture intrusion)
- Framing and structural components where visible (attic, basement, crawlspace)
- Exterior siding, trim, and finishes
- Grading and drainage around the foundation
- Walkways, driveways, and decks/patios
Roof:
- Roofing material condition and estimated remaining life
- Flashing at chimneys, valleys, and penetrations
- Gutters and downspouts
Mechanical systems:
- Heating system (operation, age, condition, safety)
- Cooling system (operation, age, condition — typically tested only when outdoor temperature permits)
- Water heater (age, condition, safety features)
- Plumbing supply and drain systems (visible pipes, fixtures, water pressure)
- Electrical service panel (breaker types, proper wiring, capacity)
- Visible wiring and electrical outlets
Interior:
- Walls, ceilings, and floors (evidence of moisture, settlement, damage)
- Windows and doors (operation, weatherstripping, sealant condition)
- Attic (insulation levels, ventilation, evidence of moisture or pest activity)
- Basement/crawlspace (moisture, drainage, structural condition)
- Bathroom fixtures and kitchen appliances (when they are included in the sale)
The inspection report documents all findings with photographs, rating each item typically as working properly, requiring repair, or a safety concern requiring immediate attention. Most items in an inspection report are informational — maintenance items, deferred upkeep, or systems nearing end of useful life — rather than critical defects.
The Inspection Contingency
Buyers typically include an inspection contingency in the purchase contract, specifying:
- A deadline for completing the inspection (typically 7–14 days from contract execution)
- The buyer's rights upon receipt of the report — commonly: accept the property as-is, request the seller to repair specific items or provide a credit, or withdraw from the contract
When the inspection reveals significant defects, the buyer may:
Request repairs: Ask the seller to address specific items before closing. Sellers may agree, decline, or offer a partial remedy.
Request a credit or price reduction: Rather than requiring repairs, the buyer may ask for a closing credit or price reduction representing the estimated repair cost. This is often preferable because the buyer controls how repairs are made.
Accept as-is: If defects are manageable or already priced into the offer, the buyer proceeds without changes.
Terminate: If defects are material and the seller will not address them, the buyer may terminate the contract and recover the earnest money deposit if the contingency is still active.
Whiterook and Viewit AI offer AI-assisted property evaluation tools that help buyers assess condition indicators from listing photos and available property data before ordering a formal inspection. Dwellrecord helps buyers organize and retain inspection reports and repair documentation throughout ownership.
Specialized Inspections
Beyond the general home inspection, buyers of certain property types or in certain markets may need supplemental inspections:
Sewer scope: A camera inspection of the main sewer line from the house to the municipal connection, identifying root intrusion, pipe cracks, or offset joints. Particularly important for older homes with clay or cast-iron sewer lines.
Radon test: Radon — an odorless, colorless radioactive gas — is the second leading cause of lung cancer in the U.S. Testing is especially important in high-radon geologic areas and in homes with basements. Mitigation systems can reduce radon levels cost-effectively.
Mold inspection: When moisture indicators are found during the general inspection, a specialist may conduct air sampling and surface testing to identify mold species and concentration.
Pest inspection (WDI): Wood-destroying insect reports identify evidence of termites, carpenter ants, and other pests. Required by some lenders and essential in regions with active termite pressure.
Roof inspection: When the general inspector has limited access to the roof or expresses significant concerns, a specialist roofing contractor's assessment may be warranted.
HVAC service inspection: An HVAC contractor can evaluate the full mechanical system and estimate remaining useful life more precisely than a general inspector.
AI Tools in Inspection-Adjacent Due Diligence
AI-powered platforms are beginning to complement the traditional inspection process. Computer vision tools — similar to Viewit AI — can analyze listing photos for indicators of deferred maintenance, moisture, or structural concerns visible in photographs. This does not replace a physical inspection but can help buyers prioritize which properties warrant more careful scrutiny and what areas to specifically raise with the inspector.
Homescore incorporates inspection-related property condition indicators into buyer due diligence workflows, helping agents and buyers organize all diligence activities systematically. See AI tools for transaction management for platforms that track inspection timelines and contingency deadlines across concurrent transactions.
Inspection in As-Is Sales
In as-is condition sales — bank-owned properties, estate sales, and properties offered without warranties — the seller is representing no intent to make repairs. Buyers may still conduct inspections; the inspection informs whether to proceed and at what price, even if the seller will not remedy findings. The inspection is often more critical in as-is sales because the buyer assumes all physical risk post-closing. See AI tools for home sellers — pricing and valuation for platforms that help sellers price as-is properties appropriately given condition factors that an inspection would reveal.
Inspector Licensing and Selection
Inspector licensing requirements vary by state — some states require extensive licensing and continuing education; others have minimal requirements. Buyers should select inspectors with credentials from recognized professional organizations (ASHI, InterNACHI), request sample reports to evaluate thoroughness, and avoid inspectors referred exclusively by the seller's agent. An independent, thorough inspector who finds issues is far more valuable than a cursory inspection that misses critical defects.
For buyers comparing AI-assisted property evaluation tools that complement the physical inspection, see chatrealtor vs whiterook as an illustration of PropAIdir's tool comparison approach. Understanding as-is-condition sale implications and using the inspection report effectively within the contingency framework are the two most actionable skills buyers can develop around the inspection process.