What to Check First When You Buy an Older Naples Home | CoHarbor Electric

The inspection report said the electrical was “functional.” That’s a word that covers a lot of ground. Functional means it works. It doesn’t mean it’s safe by today’s standards, adequately sized for how you’re going to live in the house, or anywhere close to what you’d expect in a home that wasn’t built forty years ago. We’ve walked into older Naples homes where the electrical was absolutely functional — lights came on, outlets worked, nothing was visibly burning — and also had aluminum branch wiring, a panel that hadn’t been touched since the Carter administration, and outdoor outlets that had been quietly corroding since long before the current owner bought the place.

Buying an older home in Naples is common. A lot of the housing stock in and around the city — Olde Naples, Old Naples, East Naples, the neighborhoods off Davis Boulevard and Rattlesnake Hammock — goes back to the 60s, 70s, and 80s. Some of it has been updated carefully over the decades. Some of it has been patched and handed down without anyone really digging into what’s underneath. The difference matters, and the time to figure it out is before you start renovating or moving in significant equipment, not after.

Here’s what we look at when a new Naples homeowner calls us in to do a proper electrical assessment on an older home.

The Panel — Start Here Before Anything Else

The electrical panel is where everything begins and where most of the meaningful decisions live. An older Naples home with its original panel is almost certainly running on 100-amp service, which was adequate for a 1970s household and is not adequate for a modern one. Central air — which pretty much every home in Collier County runs full-time — pool equipment if there’s a pool, a home office with multiple screens and peripherals, an EV charger someday: the loads add up fast and a 100-amp service doesn’t have much room.

But service size isn’t the only thing we’re looking at. Panel brand matters. Certain panels from the 60s and 70s — Federal Pacific Stab-Lok and Zinsco are the ones that come up most often — have documented reliability issues with their breakers. A breaker that doesn’t trip when it should isn’t just inconvenient, it’s a fire risk. If your home has one of these panels, that’s not a “keep an eye on it” situation.

We also look at what’s been done to the panel over the years. A panel that’s been added to piecemeal — breakers swapped, circuits doubled up on one breaker, wiring that was clearly done by different hands at different times — tells a story. We read that story before recommending anything.

Collier County permitting requires licensed contractor work for panel replacements, and the inspection process for a service upgrade in this county has specific staged requirements. That’s not a reason to put it off — it’s just the process, and it’s straightforward with the right contractor.

Wiring Type — What’s Actually in the Walls

The general home inspection almost never identifies wiring type specifically. Inspectors note what’s visible: the panel, the outlets, the visible junction boxes. What’s inside the walls they’re not opening.

For an older Naples home, the wiring type question has a few possible answers:

Copper branch circuit wiring in good condition is what you want. If the home’s been maintained and the wiring hasn’t been subjected to sustained overloading or moisture intrusion, copper wiring from the 1970s and 1980s is often still in serviceable shape.

Aluminum branch circuit wiring is a different story. During a period in the late 1960s and early 1970s when copper prices spiked, aluminum got used for branch circuit wiring in residential construction — not service entrance conductors, where aluminum is still standard, but the branch circuits feeding outlets and switches throughout the home. Aluminum expands and contracts more than copper with temperature cycling, which causes connections to loosen over time. Loose connections arc. Arcs cause fires. Aluminum wiring isn’t automatically dangerous but it requires specific handling — CO/ALR rated devices at every connection point, or pigtailing with proper connectors, or in some cases full rewiring of affected circuits. The important thing is knowing it’s there.

Knob-and-tube wiring is less common in Naples than in older northern housing stock but it does show up in homes from the 1940s and 1950s. If it’s present, it almost certainly needs to be replaced rather than worked around.

We identify wiring type as part of any assessment on an older home. It’s not something to assume based on the year the home was built — we’ve seen aluminum wiring in homes where we didn’t expect it and copper in homes we thought might have aluminum. You need to actually look.

GFCI and AFCI Coverage — What Code Requires Now vs. What Was Required Then

The home was built to the electrical code in effect when it was constructed. That code is not the same as the code in effect today, and the gaps between them are real.

GFCI protection — the outlets with the test and reset buttons that you know from kitchens and bathrooms — is now required by NEC Article 210 in kitchens, bathrooms, garages, outdoors, near pools and water features, and in several other locations. Homes built before the relevant code cycles may have standard outlets in all of these locations. A standard outlet in a bathroom or near a kitchen sink isn’t just a code issue — it’s a shock hazard.

AFCI protection — arc fault circuit interrupters — is required in most living spaces under current code and works differently than GFCI. Where GFCI protects against ground faults (current taking an unintended path through water or a person), AFCI protects against arc faults, which are dangerous high-temperature events that can occur inside walls where nobody sees them until something catches fire. Older homes don’t have AFCI protection because it wasn’t required when they were built.

Retrofitting GFCI protection is usually straightforward and not expensive. AFCI retrofitting requires AFCI breakers at the panel for the affected circuits, which is more involved but still a reasonable scope of work. We cover both as part of any electrical assessment because they’re directly tied to safety rather than convenience.

Outdoor and Coastal Electrical — What Salt Air Does Over Time

This is specific to living in Southwest Florida and it’s more significant than most homeowners realize when they’re coming from somewhere else. Salt air is corrosive in ways that don’t always show up during a standard home inspection, because the visible signs — corrosion on outlet covers, pitting on fixtures, discoloration on service entrance hardware — are easy to overlook if you’re not specifically looking for them.

Naples homes near the Gulf — Port Royal, Aqualane Shores, Coquina Sands, homes on canals off the Gordon River and out toward the bay — face more aggressive salt air exposure than properties inland. But even homes several miles from the water see more corrosion on outdoor electrical equipment than you’d find in a non-coastal market.

What we look for specifically: the service entrance weatherhead and meter socket for corrosion and moisture intrusion, outdoor outlet covers and boxes for degradation, exterior fixtures for seal failure, and any outdoor subpanels (for pool equipment, in detached garages) for enclosure condition. A NEMA-rated outdoor enclosure that’s been in service for fifteen years on a coastal Naples property may be well past the end of its useful life even if it doesn’t look obviously failed.

Replacing corroded outdoor electrical hardware with properly rated, corrosion-resistant components at the time of an older home purchase — rather than waiting for a failure to make the decision — is almost always worth doing.

The Smoke and CO Detector Situation

Battery-only smoke detectors have a ten-year service life from the manufacture date, not from when they were installed. A lot of older homes have detectors that are past that window and still beeping on the test button, which tests the horn, not the sensor. The sensor can fail while the horn still works fine.

Hardwired, interconnected smoke detectors — where all alarms sound if any one is triggered — are substantially more effective in a larger home than individual battery-operated units. Naples homes from this era often don’t have hardwired detectors, or if they do, they’re at end of life. This is a relatively low-cost upgrade with an obvious value. We include it in the conversation when we’re doing an older home assessment because it tends to get skipped during renovations when people are focused on larger-ticket items.

Capacity for What You’re Planning to Add

The last part of an older-home assessment is forward-looking: what are you going to want this house to do that it doesn’t do yet?

EV charging is the most common answer we hear from Naples buyers right now. A Level 2 charger needs a dedicated 240-volt circuit, and if the panel is already being replaced or upgraded for other reasons, adding the circuit now is trivially easy compared to adding it later. Even if an EV isn’t in the immediate plan, running the conduit and roughing in the circuit during a panel upgrade costs a fraction of what a standalone installation costs after the garage is finished.

Major kitchen or bathroom renovations typically add circuits — dedicated appliance circuits, updated lighting, GFCI throughout. If a renovation is in the near-term plan, the electrical scope of that renovation should be part of the panel capacity conversation now rather than a surprise when the renovation contractor is already on-site.

Whole-home surge protection is a small addition to any panel upgrade or assessment that protects all the hardwired equipment in the house from Florida’s lightning season. We install it on essentially every project at this point. It’s not an upsell — it’s cheap insurance in a market where lightning is a real and recurring hazard.

Let Coharbor Electric Take a Look First

If you’ve recently bought an older home in Naples — or you’re under contract on one and want to know what you’re getting into before you close — Coharbor Electric does thorough electrical assessments that go beyond what a general home inspection covers. We’re looking at panel condition and brand, wiring type, GFCI and AFCI coverage, outdoor and coastal component condition, and capacity for what you’re planning to add.

We’re licensed and insured, we work throughout Naples, Marco Island, Bonita Springs, and Collier County, and we’d rather give you an honest picture of what the house needs than sell you on work it doesn’t. Reach out to Coharbor Electric and let’s schedule a time to walk through it before you’re already deep into a renovation.