Aluminum Wiring in San Antonio Homes: What to Do

San Antonio grew fast in the 1960s and 1970s, and a lot of the homes from that era are still standing and still lived in. Many of them share a hidden trait: aluminum branch wiring. During those years, copper prices spiked and builders turned to aluminum for the branch circuits that feed outlets and switches. Decades later, that choice is worth understanding, because it changes how you should think about your home's electrical safety.

Why did homes get aluminum wiring in the first place?

It came down to cost. Aluminum was far cheaper than copper at the time, and it does conduct electricity well. The problem was never that aluminum cannot carry current. The problem is how aluminum behaves at its connections over many years, especially when it was installed with devices and methods designed for copper.

Is aluminum wiring actually dangerous?

Here is the honest answer. The wire running through your walls is generally fine. The risk lives at the connections, the points where the wire lands on an outlet, a switch, or a splice. Aluminum expands and contracts more than copper as it heats and cools, so over years of use those connections can work loose. Aluminum also forms an oxide layer that resists current, which creates resistance, which creates heat. Loose, hot connections are what can lead to fires. So the danger is real, but it is specific and it is fixable.

Which San Antonio neighborhoods are most likely to have it?

Any area with a lot of housing stock built in that late-1960s to mid-1970s window is a candidate. TODO(operator): confirm the specific San Antonio neighborhoods and subdivisions you want to name here based on your own field experience, rather than listing them from memory. The safest guidance for a homeowner is simple: if your home was built in that era and has never had its wiring evaluated, it is worth an inspection.

How do I know if my home has aluminum wiring?

There are a few clues. On the cable jacket in the attic or at the panel, aluminum wiring is often stamped with the word aluminum or the abbreviation AL. The wire strands themselves are silver in color rather than the copper tone most people picture. Warning signs of trouble at the connections include warm outlet or switch plates, flickering lights, a faint smell of burning plastic, or outlets that have stopped working. Do not go pulling outlets apart to check. An electrician can identify it safely in a few minutes.

An electrical inspection is the clean way to know for sure. We identify the wiring type, check the condition of the connections, and give you a written report with photos and a prioritized plan.

Do I have to rewire the whole house?

Not necessarily, and this is where honest advice matters. A full rewire pulls out the aluminum branch wiring and replaces it with copper, and it is the most complete fix. But it is also the most expensive and disruptive. For many homes, the right answer is connection remediation: going to every device and splice and making the connection safe using connectors and methods approved for aluminum-to-copper transitions. That addresses the actual risk, the connections, without opening every wall.

When a home does need to move off aluminum entirely, we handle whole-home rewiring with a plan, protecting finishes where we can and pulling the proper permits.

What does it cost to deal with aluminum wiring in San Antonio?

It depends heavily on the approach. Connection remediation is priced by the number of devices and splices and is far less than a full rewire. A whole-home rewire is a much larger project quoted flat after a walkthrough, because access, home size, and finishes all matter. TODO(operator): add your typical flat-rate ranges for both remediation and full rewire once your pricing is set. What we can promise is a flat number you approve before any work starts, so there is no open-ended invoice.

What about my insurance?

This is often the reason people call. Many insurers will not write or renew a homeowner policy on a house with untreated aluminum branch wiring, and some require documentation that it has been remediated by a licensed electrician. A permitted repair or rewire gives you that paper trail. We provide the documentation so you can hand it straight to your insurer.

We work on older homes across the metro, including established areas like Alamo Heights and Castle Hills. If you think your home might have aluminum wiring, call and we will take a look and give you a straight answer.