What’s Involved in a Home Inspection: Plain-Language Guide
Buyers under contract on a Front Range house often ask the same question after signing: what’s involved in a home inspection, and what will the inspector actually deliver? The answer is more concrete than most online explanations suggest. A standard residential inspection is a roughly three-to-four-hour on-site visit by a single inspector, followed by a written PDF report — typically thirty to fifty pages with embedded photos — delivered within twenty-four hours. The visit follows a published, industry-recognized scope. This guide walks through that scope from the buyer’s side: what the inspector looks at, what they do not, what the report contains, and how to read the deliverable when it lands in your inbox.
The Short Answer: A Visual, Non-Invasive Walkthrough Plus a Written Report
A residential home inspection is a visual, non-invasive examination of the readily accessible systems and components of a house. ASHI’s Standard of Practice and the InterNACHI Standards of Practice both describe the same scope: roof, exterior, structure, foundation, basement and crawl space, attic, insulation, ventilation, electrical, plumbing, heating, cooling, interior, doors and windows, and built-in appliances. The inspector observes, documents, and reports. They do not open walls, lift wall-to-wall carpet, drill anything, or operate shut-off systems. The deliverable is a PDF report identifying issues, with photos, severity language, and recommendations.
For a typical 1,800 to 2,500 square-foot single-family home on the Front Range, the on-site visit runs three to four hours. Larger houses, older homes with finished basements, or properties with detached structures push that toward five or six hours. The fee — separately covered in our national pricing breakdown for home inspections — typically lands between $375 and $650 nationally and $450 to $700 in Denver-area markets.
What the Inspector Examines on Site
The on-site scope is best understood as a top-down walkthrough. Each major system has a defined set of observable items.
Roof and Roof Coverings
Inspectors walk the roof when slope and conditions allow, or observe from a ladder at the eaves when not. They document shingle condition, flashing at penetrations, gutter attachment and slope, and visible signs of past leaks viewed from inside the attic. They do not predict remaining life or warrant the roof.
Exterior, Grading, and Lot
The exterior walk covers siding type and condition, trim, soffits, fascia, exterior paint, visible foundation cracks, grading around the perimeter, drainage away from the house, decks, porches, patios, and walkways. In Colorado expansive-soil territory, inspectors flag any negative grading directing water toward the foundation.
Structure and Foundation
Foundation walls are inspected from inside the basement or crawl space where accessible. Inspectors document visible cracks (hairline, stair-step, horizontal), efflorescence, water staining, and signs of past movement. Structural framing — joists, beams, posts — is observed where visible.
Electrical System
The electrical inspection covers the service drop, main panel, sub-panels, branch circuit wiring visible at the panel, GFCI/AFCI presence at required locations, a representative sample of outlets and switches, and the visible grounding system. Inspectors remove panel covers when safely accessible. They do not test every outlet or trace circuits.
Plumbing System
Plumbing covers water supply piping (material and visible condition), drain-waste-vent (DWV) piping, water heater age and condition, all visible fixtures, and functional flow at faucets. Inspectors run water, flush toilets, and check for obvious leaks. They do not test sewer lines (a separate sewer scope inspection covers that), nor do they pressure-test any plumbing.
HVAC — Heating and Cooling
The furnace or boiler is operated through the normal thermostat controls when outdoor temperature allows. Air conditioning is tested when outdoor temperature is above roughly sixty-five degrees Fahrenheit — running a compressor below that risks damage. Inspectors document equipment age, visible flame condition (where viewable), filter condition, and combustion-air provisions.
Interior, Insulation, and Ventilation
Interior coverage includes walls, ceilings, floors, doors, windows, stairs, railings, and built-in cabinetry. Inspectors operate a representative sample of windows and doors. They observe insulation at accessible attics and crawl spaces, ventilation paths, and exhaust fans.
What the Inspector Does Not Do
This list matters as much as the inclusion list. A standard home inspection does not include any of the following: mold sampling, radon testing, asbestos testing, lead-paint testing, sewer-line scoping, well-water quality testing, septic-system inspection, structural-engineering analysis, code compliance verification, environmental hazard assessment, swimming pool inspection (beyond visible safety features), or appraisal of value. Each of these is a separate specialty service. Many buyers on the Front Range bundle radon (a roughly 48-hour test) with the inspection — a logical pairing given Colorado is largely EPA Radon Zone 1 — but it is contracted separately.
The inspector also does not move furniture or stored items. Anything blocking access — a couch against a wall, boxes in front of an electrical panel, plants on the porch covering siding — gets noted in the report as “not inspected, access blocked.”
The Deliverable: What the Report Actually Looks Like
The standard modern home inspection report is a PDF generated by software such as Spectora, HomeGauge, or HomeHubZone, typically thirty to fifty pages for a median-sized home. The structure is consistent across vendors:
Cover page with property address, inspection date, client name, and inspector’s license number or InterNACHI/ASHI credential. Summary section listing the most material findings, usually color-coded by severity (red/major, yellow/moderate, blue/maintenance). System-by-system sections following the standards of practice — roof, exterior, structure, electrical, plumbing, HVAC, interior, attic, insulation. Each section contains observations, photos, and recommendations. Photos embedded throughout: a typical report includes seventy-five to two hundred photographs.
Severity labeling varies by inspector but typically separates safety issues (immediate attention), major defects (negotiation candidates), and routine maintenance (homeowner to-do list). Buyers should focus the contract negotiation on the safety and major-defect items, not the routine maintenance.
The Walk-Along and Verbal Summary
Buyers are encouraged but not required to attend. Most inspectors invite buyers to arrive for the last hour to walk through findings on the property. This is the highest-value hour of the engagement for a buyer — you see issues with your own eyes, get verbal context, and can ask questions while standing in front of the item. A separate walk-along guide covers what buyers should personally observe alongside the inspector.
Timeline from Booking to Report
The realistic timeline runs as follows. Booking-to-inspection is typically two to seven days in normal markets, sometimes same-day in slow seasons. The inspection itself is three to four hours on site. The report arrives by email within twenty-four hours, often the same evening. Buyers then have whatever inspection-objection deadline the contract specified — commonly five to ten business days in Colorado purchase contracts — to review findings, get specialist quotes if needed, and negotiate.
Hiring Considerations Before You Book
The scope above describes what a competent inspector delivers. What separates a competent inspector from a checklist-checker is judgment: knowing which finding deserves a paragraph and which deserves a footnote, knowing when to recommend a structural engineer, and writing a report a non-technical buyer can act on. The parent hiring guide for home inspectors covers credential checks, sample-report review, and questions to ask before booking.
Verify the inspector carries Errors and Omissions plus General Liability insurance, holds ASHI Certified Inspector or InterNACHI Certified Professional Inspector credentials, and will provide a sample report on request. Reviewing one sample report tells you more about an inspector than fifteen testimonials.
What the Inspection Costs and What It Buys
National pricing for a residential inspection runs $375 to $650 for a typical 1,800 to 2,500 square-foot home. Front Range markets — Denver, Boulder, Colorado Springs — typically run $450 to $700 due to local market dynamics. Larger homes, older homes with finished basements, or homes with multiple detached structures push the fee higher. Add-ons commonly priced separately include radon testing ($125 to $250), sewer scoping ($150 to $300), thermal imaging ($75 to $150), pool inspection ($75 to $150), well-water testing ($50 to $150), and septic inspection ($300 to $500).
What the buyer is buying is independent verification — a documented technical assessment performed by a credentialed professional with no financial stake in the transaction outcome. The inspector works for the buyer (or whoever paid the fee). The report is the buyer’s property and can be referenced in negotiations, used to inform major repair decisions, and retained for future reference. Reports are typically delivered as PDFs that buyers should save with their closing documents.
Many buyers also use the report as a maintenance roadmap for the first few years of ownership. The routine maintenance items flagged in the report — caulk replacement, gutter cleaning, HVAC service intervals, recommended insulation upgrades — give new owners a prioritized to-do list informed by an inspector’s direct observation of the property.
Differences From What the Inspection Does NOT Cover
The single most common buyer misunderstanding is treating the home inspection as a comprehensive property assessment. It is not. The inspection is visual, non-invasive, and limited to readily accessible systems. The inspector does not open walls, run pressure tests, or operate shut-off valves. The inspector also does not assess code compliance, predict remaining service life of major systems, or appraise property value.
Specialty inspections that complement the standard home inspection include sewer-line video scoping (essential in older Front Range neighborhoods with vintage clay or cast-iron lines), structural engineering evaluation (when the inspector flags structural concerns), Wood Destroying Organism (WDO) inspection for termite or carpenter-ant activity (region-dependent), HVAC technician inspection for older furnaces or heat pumps, electrical engineer evaluation for older panels or unusual electrical configurations, and roof contractor assessment for borderline-condition roofs.
Buyers should understand which add-ons their specific property warrants. A 1920s Denver bungalow likely needs sewer scoping and may need lead-paint testing. A 1990s suburban tract house probably needs neither but warrants standard radon testing. A mountain property with well and septic needs both well-water and septic inspection. The inspector and the buyer’s agent should jointly recommend appropriate add-ons during the inspection scheduling conversation.
What Happens After the Report
The post-report process follows a predictable arc in most Front Range transactions. The buyer reviews the report within the contract’s inspection objection deadline (commonly five to ten business days). The buyer’s agent helps prioritize findings by material impact — major defects warrant negotiation; routine maintenance does not. Specialist quotes are obtained where needed: structural engineer for foundation concerns, HVAC technician for furnace concerns, roofer for borderline roofs.
The buyer then issues an inspection objection or resolution document to the seller, listing requested repairs, credits, or price adjustments. The seller responds. Negotiation ensues. The transaction either proceeds (with terms updated) or, occasionally, terminates if material findings cannot be resolved. Most Front Range transactions resolve through credit-at-closing arrangements rather than seller-performed repairs, because credit-at-closing lets the buyer control contractor selection after taking possession.
The inspection report itself is the buyer’s property going forward. It travels with the buyer, not the seller, and can be referenced for years after closing.
References
- ASHI Standard of Practice — American Society of Home Inspectors
- InterNACHI Standards of Practice — International Association of Certified Home Inspectors
- Buying a Home — HUD homebuyer resources — U.S. Department of Housing and Urban Development
- EPA Radon Information — U.S. Environmental Protection Agency