Home Inspection: Definition & Maintenance Guide
Call Now (855) 557-9600
A home inspection is a comprehensive visual examination of a residential property’s physical structure, systems, and components, conducted by a licensed inspector to assess their condition and identify deficiencies, safety concerns, or maintenance needs. The plumbing portion of a home inspection evaluates supply lines, drain systems, water heaters, fixtures, shut-off valves, and visible piping for leaks, code violations, and functional problems.
Visual Scope, Functional Testing & Hidden System Limitations
Home inspections are most commonly performed during real estate transactions, when a buyer hires a licensed inspector to evaluate the property before completing the purchase. The inspection report documents the condition of all major systems — structural, electrical, HVAC, roofing, and plumbing — and identifies items that need repair, replacement, or further evaluation by a specialist.
The plumbing portion of a general home inspection covers visible and accessible components. The inspector checks water pressure at representative fixtures, runs each faucet and flush each toilet, inspects visible supply and drain piping for leaks and corrosion, tests the water heater’s temperature and pressure relief valve, verifies shut-off valve functionality, and notes the piping materials used throughout the home. However, a general home inspection is limited to visual observations and functional testing. Inspectors do not open walls, excavate underground pipes, or use cameras to inspect drain interiors.
This limitation is significant because many serious plumbing problems — slab leaks, corroded underground pipes, bellied sewer lines, and hidden supply line deterioration — cannot be detected by visual inspection alone. When a general inspection raises concerns or the property has risk factors such as older piping materials or mature trees near sewer lines, a specialized plumbing inspection provides the deeper evaluation needed.
Pre-Purchase, Pre-Listing, New Construction, Annual & Specialized Inspection Types
Pre-purchase home inspections are the most common type, performed at the buyer’s request during the due-diligence period of a real estate transaction. These follow the Standards of Practice established by ASHI (American Society of Home Inspectors) or InterNACHI (International Association of Certified Home Inspectors).
Pre-listing (seller’s) inspections are commissioned by the seller before listing the property, allowing them to identify and address issues proactively rather than during negotiations.
New construction inspections evaluate a newly built home before the buyer takes possession. Even new homes can have plumbing defects, including improper pipe support, missing shut-off valves, and inadequate water pressure.
Annual maintenance inspections are periodic evaluations performed for existing homeowners to identify developing problems before they become emergencies. These are less formal than transaction inspections but follow similar assessment criteria.
Specialized plumbing inspections go beyond the scope of a general home inspection, using camera pipe inspection, pressure testing, and leak detection equipment to evaluate hidden plumbing components.
How Home Inspection Relates to Plumbing Services
Bonded Plumbworks’ plumbing inspection and code compliance service provides the specialized plumbing evaluation that goes beyond what a general home inspection covers. When a home inspection report flags plumbing concerns — such as low water pressure, corroded visible piping, slow drains, or outdated piping materials — Bonded Plumbworks performs follow-up evaluations with professional diagnostic equipment.
Common plumbing findings in home inspections include polybutylene supply piping (installed in the 1980s and 1990s, now considered failure-prone), corroded galvanized steel drain pipes, water heaters past their expected service life, and missing backflow prevention on irrigation connections. Bonded Plumbworks addresses each of these through targeted repair or system replacement.
ASHI Standards, InterNACHI Practice & State Inspector Licensing Requirements
ASHI Standard of Practice and InterNACHI Standards of Practice define the minimum scope of a residential home inspection. State statutes govern home inspector licensing. The applicable state building codes provides the benchmark against which plumbing conditions are evaluated during inspection.
RIDGID SeeSnake Camera, FLIR Thermal Imaging & General Tools Moisture Products
RIDGID produces the SeeSnake camera systems used in specialized plumbing inspections. FLIR manufactures thermal imaging cameras that detect hidden moisture. General Tools offers moisture meters for evaluating water damage around plumbing fixtures.