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CPI key terms

CPI · Get comfortable with the vocabulary.

Standards of Practice (SOP)

The written baseline that defines which systems and components an inspector must examine, which conditions must be reported, and which activities lie outside the inspection scope. It sets minimum expectations, not a warranty of condition.

Related: Scope of Inspection, Code of Ethics, Material Defect
Code of Ethics

The enforceable rules governing inspector conduct, including duties of honesty, confidentiality, avoidance of conflicts of interest, and limits on accepting compensation from parties with a financial stake in the transaction.

Related: Conflict of Interest, Standards of Practice (SOP)
Scope of Inspection

The stated boundaries of what will and will not be examined during a given inspection, including which systems are excluded, which areas are inaccessible, and any agreed limitations such as ancillary services declined by the client.

Related: Standards of Practice (SOP), Pre-Inspection Agreement, Limitation
Pre-Inspection Agreement

A contract signed before work begins that identifies the client, describes the scope and limitations of the inspection, states the fee, and discloses that the report reflects a visual, non-invasive, point-in-time observation.

Related: Scope of Inspection, Limitation
Material Defect

A specific problem with a system or component that significantly reduces the property's value, poses an unreasonable safety risk, or is likely to require costly repair. Inspectors must report these when observed within the scope.

Related: Safety Hazard, Defect, Standards of Practice (SOP)
Defect

A condition that impairs function, departs from accepted installation practice, or shortens the expected service life of a system or component. Reports describe the observation and its implication rather than prescribing a repair method.

Related: Material Defect, Improper Installation
Safety Hazard

A condition that presents an unreasonable risk of injury to occupants or inspectors, such as missing guards, exposed conductors, or absent combustion-air supply. Hazards are reported as such and are not softened into general maintenance notes.

Related: Material Defect, Backdrafting
Limitation

A factor that restricts the inspection, such as stored goods blocking access, snow cover, locked panels, or an occupied dwelling. Limitations are disclosed in the report so the client understands what was not observed.

Related: Scope of Inspection, Inaccessible Area
Inaccessible Area

A space the inspector could not safely or reasonably enter or view, such as a sealed crawlspace, a low attic, or an area blocked by personal property. The report must identify it and explain why it was not examined.

Related: Limitation, Attic Access
Conflict of Interest

A situation in which an inspector's other financial interest, such as performing repairs on the inspected property or receiving referral fees, could bias the findings. Most standards prohibit or sharply restrict such arrangements.

Related: Code of Ethics, Referral Fee
Referral Fee

Payment made to or received from a third party for directing business, such as a fee to a real estate agent for a client referral. Accepting or paying such fees is generally prohibited by inspector ethics rules.

Related: Conflict of Interest, Code of Ethics
Report

The written record of the inspection identifying systems and components examined, conditions observed, limitations encountered, and items needing further evaluation by a qualified specialist. It must be clear, timely, and consistent with the agreement.

Related: Pre-Inspection Agreement, Narrative Report
Narrative Report

A report format that describes each observation in sentence form, explaining the condition, its location, and why it matters. It reduces ambiguity compared with checkbox-only formats and supports consistent interpretation by clients and agents.

Related: Report, Defect
Deferred Maintenance

Routine upkeep that has been postponed, such as clogged gutters, peeling paint, or worn caulk. These items are typically reported as maintenance recommendations rather than as material defects.

Related: Defect, Material Defect
Further Evaluation

A recommendation that a licensed specialist assess a condition the inspector observed but could not fully diagnose, such as a structural crack or an electrical panel concern. It directs the client without prescribing the repair.

Related: Material Defect, Licensed Specialist
Licensed Specialist

A professional holding the credential required by the jurisdiction to design or perform work in a given trade, such as a structural engineer, electrician, or roofer. Inspectors recommend referral when a condition exceeds generalist knowledge.

Related: Further Evaluation
Ancillary Service

An additional inspection offering beyond the standard scope, such as radon testing, mold sampling, sewer scope, or thermal imaging. Each has its own protocol, reporting, and often separate agreement terms.

Related: Scope of Inspection, Radon Test
Continuing Education

Required ongoing training that keeps an inspector current on building science, code changes, and reporting practice. It is typically documented in credit hours per renewal cycle and may be audited by the certifying body.

Related: Code of Ethics
Visual Inspection

A non-invasive, observational method of examining readily accessible systems without dismantling, probing, or operating equipment in ways that could cause damage. It relies on trained observation and safe operation of normal controls.

Related: Scope of Inspection, Normal Operating Controls
Normal Operating Controls

The ordinary user interfaces an inspector may operate to test a system, such as a thermostat, light switch, or faucet handle. Inspectors do not normally reset breakers, open gas valves, or run equipment beyond its designed use.

Related: Visual Inspection, Pilot Light
Exclusive Use

The arrangement in which the inspector's report is prepared solely for the named client and may not be relied upon by other parties without written permission. It limits liability and clarifies who the client is.

Related: Pre-Inspection Agreement, Client
Client

The party who engages the inspector and to whom the duty of care and reporting obligations run, usually the buyer but sometimes a seller or owner. Identifying the client correctly shapes the scope and confidentiality obligations.

Related: Exclusive Use, Pre-Inspection Agreement
Probable Cause (for Inspection)

In the inspection context, a reasonable basis for suspecting a hidden condition, such as moisture staining suggesting a concealed leak, that justifies closer non-invasive examination of an accessible area.

Related: Visual Inspection, Moisture Intrusion
Standard of Care

The degree of skill and judgment a reasonably prudent inspector would exercise under similar circumstances. It is measured against professional practice and the applicable standards, not against a guarantee that every defect will be found.

Related: Standards of Practice (SOP), Negligence
Negligence

Failure to exercise the standard of care owed to the client, resulting in loss, such as omitting a required observation or reporting a condition inaccurately. It is judged by what a competent inspector would have done.

Related: Standard of Care, Limitation of Liability
Limitation of Liability

A contract clause that caps or restricts the inspector's financial exposure for claims, sometimes tied to the fee paid. Enforceability varies by jurisdiction, and inspectors should confirm local rules before relying on it.

Related: Pre-Inspection Agreement, Negligence
Moisture Intrusion

The unwanted entry of water or vapor into building assemblies through leaks, failed flashing, poor grading, or condensation. It is a leading cause of decay and mold and is reported with its likely source and location.

Related: Efflorescence, Grading and Drainage, Probable Cause (for Inspection)
Efflorescence

A white, powdery deposit left on masonry or concrete when water carrying dissolved salts evaporates at the surface. It signals moisture movement, though the deposit itself is usually cosmetic.

Related: Moisture Intrusion
Grading and Drainage

The slope of the ground and the systems that direct surface water away from the foundation. Soil should fall away from the structure so water does not pond against footings or enter the basement or crawlspace.

Related: Moisture Intrusion, Sump Pump
Sump Pump

A pump installed in a pit to remove accumulated groundwater from a basement or crawlspace. Inspectors note its presence, visible condition, and discharge location, but testing during dry conditions may be inconclusive.

Related: Grading and Drainage, Crawlspace
Crawlspace

A shallow, often unvented or vented space beneath the floor that provides access to plumbing and foundation elements. Inspectors report visible moisture, insulation condition, vapor barriers, and support problems when safely accessible.

Related: Vapor Barrier, Inaccessible Area
Vapor Barrier

A sheet material, commonly plastic, laid over bare soil in a crawlspace to limit moisture migration into the structure above. It should overlap, be continuous, and be protected from damage.

Related: Crawlspace, Moisture Intrusion
Attic Access

The opening, hatch, or stairway that allows entry to the attic. Inspectors report its location, size, and whether safe access was possible, since blocked or undersized access becomes a documented limitation.

Related: Inaccessible Area, Insulation
Insulation

Material that resists heat flow, described by its R-value and installation quality. Inspectors report visible type, approximate depth, and gaps, compression, or missing coverage, but do not calculate energy performance.

Related: Attic Access, Vapor Barrier
Improper Installation

Work that departs from manufacturer instructions or accepted trade practice, such as reversed flashing, undersized wiring, or unsupported pipe. Inspectors describe the observed deviation and recommend correction by a qualified party.

Related: Defect, Further Evaluation
Backdrafting

A condition in which combustion gases spill into the living space instead of venting outdoors, often from depressurization or a blocked flue. It is a serious safety hazard and should be reported immediately.

Related: Safety Hazard, Pilot Light
Pilot Light

A small standing flame that ignites the main burner on some gas appliances. Inspectors observe whether it is lit and whether the flame and venting appear normal, without adjusting gas controls.

Related: Backdrafting, Normal Operating Controls
Radon Test

A measurement of radioactive gas concentration in indoor air or water, typically using a short-term detector placed for a set period under closed-house conditions. Results are compared with action levels set by health authorities.

Related: Ancillary Service