A 4-point inspection is a focused look at four systems insurers care about most: the roof, electrical, plumbing, and HVAC. If you’re buying or insuring an older San Diego home, your insurance company may require one before they’ll write or renew a policy. It’s not a substitute for a full inspection, just a narrower one with a different audience.
What a 4-Point Inspection Actually Covers
The name is literal. A 4-point inspection evaluates the condition and remaining service life of four major systems, and nothing else. Here is what an inspector documents in each category:
- Roof — covering type (composition shingle, tile, flat membrane), approximate age, visible wear, active leaks, and the estimated years of service life remaining. This is usually the single biggest factor in whether an insurer offers a policy.
- Electrical — panel brand and amperage, type of wiring, and the presence of known hazards. In older San Diego homes that means flagging hazardous panels (Federal Pacific, Zinsco), cloth-insulated or knob-and-tube wiring, and aluminum branch circuits from the 1960s and 70s.
- Plumbing — supply pipe material (copper, galvanized steel, PEX, polybutylene), water heater age and condition, and any visible leaks or corrosion. Galvanized supply lines, common in pre-1970 homes, are a frequent red flag.
- HVAC — heating and cooling type, approximate age, and whether the system is operational. Many older inland homes run aging furnaces or have window units rather than central air, which insurers note.
For each system the inspector reports condition and age, and the report typically asks whether the system is at or near the end of its expected life. That single question drives most insurer decisions.
Why Insurers Require a 4-Point on Older Homes
Insurance carriers want to know their exposure before they take on a property. Newer homes have a known build standard and a predictable risk profile. A home built in the 1950s, 60s, or 70s might have its original roof, an obsolete electrical panel, or galvanized plumbing that’s quietly corroding from the inside — all of which raise the odds of a claim.
Rather than guess, carriers ask for a 4-point inspection on homes that hit a certain age threshold, often 25 to 40 years depending on the insurer. The report tells them whether the four systems most likely to cause a costly claim (fire from old wiring, water damage from failing pipes, roof failure) are in serviceable shape. If they are, you get coverage. If not, you may be asked to update a system before the policy is issued.
In San Diego County this comes up constantly because so much of our housing stock is older. Mid-century neighborhoods across La Mesa, Clairemont, El Cajon, and parts of Chula Vista are full of homes from the postwar boom, and the inland communities have plenty of 1970s and 80s construction now crossing insurer age thresholds. If you’re financing an older home, the lender’s required hazard insurance can hinge on this report.
Which San Diego Homes Are Most Likely to Need One
You’ll most often run into a 4-point requirement in these situations:
- Buying a home built before roughly 1985 and applying for a new homeowner’s policy.
- Switching insurance carriers on an older home, where the new carrier wants its own assessment.
- Renewing a policy on an aging property where the insurer flags the systems as overdue for review.
- Homes with known older components — an original tile or built-up roof, a Federal Pacific or Zinsco panel, or galvanized supply lines.
Coastal and inland homes face different pressures. Near the coast — Encinitas, Oceanside, the beach communities — salt air accelerates corrosion on electrical components, roof flashing, and exposed plumbing, so insurers scrutinize those systems closely. Inland, in El Cajon, Santee, and Escondido, the bigger heat load means HVAC systems work harder and age faster, and older homes there frequently still have dated panels and original roofs baking in the sun.
How a 4-Point Differs From a Full Home Inspection
This is where buyers get tripped up, so it’s worth being clear. A 4-point inspection and a full buyer’s home inspection serve completely different purposes.
A full home inspection is for you, the buyer. It’s a top-to-bottom evaluation of the property — foundation, structure, grading and drainage, windows, doors, attic, insulation, ventilation, appliances, safety items, and yes, the same four systems a 4-point covers, but in far more depth. The goal is to give you a complete picture so you can make a confident purchase decision and negotiate repairs.
A 4-point inspection is for the insurance company. It’s narrow by design, limited to those four systems, and written to answer the carrier’s specific question: are these systems safe and serviceable enough to insure? It does not assess foundations, drainage, or dozens of other items a full inspection would catch.
Put simply: a full inspection protects your investment; a 4-point protects the insurer’s. They are not interchangeable. If you’re buying an older home that needs a 4-point for your policy, you almost certainly still want a full inspection too — the 4-point won’t tell you about a cracked slab, poor drainage, or a structural issue.
What Happens If a System Fails the 4-Point
A poor finding doesn’t automatically kill your insurance application, but it usually means action. If the roof has only a few years left, the panel is a known fire hazard, or the plumbing is failing galvanized, the insurer may decline coverage, require the system be replaced first, or offer a policy with conditions. Because the roof is the most common sticking point, many buyers pair the 4-point with a dedicated roof inspection to get a clear read on remaining service life and any repairs that would satisfy the carrier.
If you’re negotiating a purchase, a failed system on the 4-point can become a bargaining point with the seller — much like findings from a full inspection. Knowing before you close gives you options.
Getting a 4-Point Inspection in San Diego County
The Real Estate Inspection Company performs 4-point inspections throughout San Diego County, from the coastal communities to the inland valleys. Owner and lead inspector Joseph Romeo is an InterNACHI Certified Professional Inspector and holds CSLB General Contractor License #1113143, which means the systems being evaluated are assessed by someone who understands how they’re built and how they fail.
If your insurer has asked for a 4-point — or you’re buying an older home and want both the insurance report and a full picture of the property — we can schedule them together. Cost depends on square footage, age, and access; see our fee schedule for details. Call (619) 752-4399 or email joe@sandiegohomeinspection.com to set it up. If you’re not sure which inspection your situation calls for, reach out through our contact page and we’ll point you in the right direction.
