A home inspection is a visual, non-invasive assessment of a home’s readily accessible systems on the day of the inspection. It does not cover concealed or inaccessible areas, things hidden behind walls or under soil, code compliance, or specialty conditions like termites, mold and sewer lines – those require separate licensed pros or lab testing.
The standard: a snapshot, not an x-ray
Every general home inspection in California follows a written Standards of Practice – the framework InterNACHI-certified inspectors like Joseph Romeo (InterNACHI CPI, CSLB GC #1113143) work to. Those standards define the inspection as a visual examination of readily accessible components. That phrase carries a lot of weight, and understanding it tells you exactly where the limits fall.
“Visual” means your inspector reports on what can be seen and operated using normal controls. “Non-invasive” means nothing gets opened, cut, dismantled or moved that would damage the home. “Readily accessible” means the inspector won’t crawl past stored boxes, dig up a yard, or break drywall to reach something. And “on the day of” matters in our climate – a roof that’s dry in May may leak in the first November storm. An inspection is a detailed snapshot of present condition, not a warranty against future failure or a guarantee of hidden perfection.
Concealed and inaccessible areas
The single biggest category of what an inspection cannot cover is anything the inspector physically cannot reach or see. In San Diego County homes, that commonly includes:
- Inside walls, ceilings and floors – wiring, plumbing supply lines, insulation and any rot or mold living behind finished surfaces.
- Underground – sewer laterals, water service lines, irrigation, and the bulk of a slab foundation. We can note visible foundation cracks and slab clues, but we don’t excavate.
- Blocked or unsafe spaces – a crawlspace packed with stored items, an attic with no access hatch or one buried under blown-in insulation, or an electrical panel a seller has boxed in.
- Furniture and personal property – we don’t move the seller’s belongings, so anything behind a couch or inside a packed closet stays unseen.
When access is limited, a quality report says so plainly – “crawlspace not entered due to standing water” or “attic viewed from hatch only.” Those notes aren’t filler; they tell you where unknowns remain so you can decide whether to push for access before closing.
Code compliance vs. safety
This trips up a lot of buyers. A home inspection is not a code-compliance inspection. Your inspector isn’t a municipal code official and won’t certify whether the house meets current building code – especially relevant in older San Diego neighborhoods where homes were legally built to the code of their era and grandfathered in. A 1955 Kensington bungalow with two-prong outlets isn’t “failing” code; it simply predates today’s requirements.
What an inspector does flag are safety hazards and material defects, regardless of code. A missing GFCI near a sink, a double-tapped breaker, a reversed-polarity outlet, or a water heater with no seismic strapping – those get reported because they affect safety and function, not because of a code citation. If you need a true permit or code verification, that’s a question for the local building department, and unpermitted additions should be confirmed there too.
Specialty exclusions: the big add-ons
Several conditions fall outside a general inspector’s scope or license. We can give you a visual heads-up on many of them, but a definitive answer means a specialist or a lab. Here’s the honest breakdown for San Diego buyers.
Termites and wood-destroying organisms
A general home inspection is not a termite report. Drywood termites and subterranean colonies are a real issue across the county, but a WDO (wood-destroying organism) inspection must be performed by a licensed structural pest control operator – a different license than ours. We’ll point out visible evidence we happen to see, then refer you out. For the formal report most lenders want, see our overview of when to schedule a termite and WDO inspection and book a licensed pest company.
Sewer lines and septic
A visual inspection stops at the fixtures – we run water and check drainage, but we can’t see the buried lateral running to the city main. Cast-iron and clay pipe in older homes, plus root intrusion from mature trees, make this a frequent and expensive surprise. A camera sewer scope is the only way to see inside the line, and it’s offered as a separate add-on. For properties on septic, a visual review is not a septic certification or pumping – that calls for a septic specialist.
Mold, asbestos, lead, radon and air quality
We can note visible moisture staining, musty odors or apparent microbial growth, and conditions that invite mold. We do not perform laboratory testing. Confirming mold species, asbestos in older flooring and insulation, lead paint in pre-1978 homes, or radon levels requires sampling and a lab or a licensed abatement pro. Treat the inspection as a screening that tells you when to call one.
Pools, spas and other optional systems
A pool and spa inspection is typically a separate service, as are well-water potability tests (a lab job, not a visual one). Low-voltage systems – security alarms, smart-home gear, intercoms, landscape lighting and the like – generally fall outside the standard scope too.
Things that simply aren’t testable on inspection day
Beyond access and licensing, some items are excluded by their nature. An inspector won’t predict the remaining life of a roof, HVAC or water heater – only describe present condition. We don’t operate systems that are shut off (a furnace with the gas valve closed, or a fireplace mid-summer), light pilot lights, or test for cosmetic issues, pest infestations beyond visible signs, or anything that requires moving the seller’s property or risking damage. Intermittent problems – a leak that only shows during a hard rain, a breaker that trips once a month – may simply not appear during the visit.
How to work within the limits
None of this means an inspection is incomplete – it means it’s defined. The buyers who get the most value know the boundaries and stack the right specialists on top. A few practical moves:
- Read the report’s limitations and access notes first. They tell you where the unknowns are.
- Add the specialty inspections that fit the property – a sewer scope on anything older, a WDO report through a pest operator, a pool inspection where applicable.
- Bring in licensed trades or a lab when the inspector flags something they can’t fully assess.
- Use your contingency window. Our guide to the California inspection contingency explains how the timeline lets you investigate further before you’re committed.
A thorough buyer’s inspection gives you a clear, honest baseline – and tells you precisely where to dig deeper. If you’re early in the process, our first-time buyer inspection guide walks through how the whole sequence fits together. Questions about scope on a specific San Diego County property? Call The Real Estate Inspection Company at (619) 752-4399 and we’ll tell you straight what we can – and can’t – cover.
