Key takeaways
- Two-prong ungrounded outlets, a fuse box, warm outlets, and a faint burning smell are the clearest signs an older San Antonio home needs attention.
- Knob and tube, cloth-covered, and aluminum branch wiring are the three older systems that most often trigger insurance flags and rewire recommendations.
- Not every home needs a full rewire. Sometimes a few problem circuits, a grounding upgrade, and GFCI protection are enough.
- A permitted rewire clears the insurance flag, and we provide the paperwork.
Wiring does not last forever, and a lot of beautiful older San Antonio homes are running on systems that were old news decades ago. The tricky part is that failing wiring hides. It works fine right up until it does not. Here is what to watch for.
The signs that matter
- Two-prong ungrounded outlets throughout the house.
- Breakers that trip regularly, or a fuse box instead of breakers.
- Warm or discolored outlets and switch plates.
- A faint fish or burning-plastic smell near outlets or the panel.
- Lights that flicker or dim when an appliance kicks on.
- Cloth-covered or brittle wiring visible in the attic or panel.
- Aluminum branch wiring, common in homes wired in the mid-1960s to 1970s.
- Knob and tube wiring, common in the oldest homes.
- An insurer that will not write or renew your policy over the wiring.
- Extension cords doing permanent work because you are out of outlets.
Why old wiring is dangerous
Old systems were built for a different house. No grounding, fewer circuits, and insulation that gets brittle and cracks with age and heat. Add a modern kitchen, a home office, and a couple of window units, and you are asking 1950s wiring to carry 2020s loads. That is how connections overheat and fires start.
Full rewire or partial?
Not every home needs a full rewire. Sometimes the fix is targeted, a few problem circuits, a grounding upgrade, and GFCI protection where it counts. Sometimes the whole system is due. The only way to know is to look. We inspect, document what we find with photos, and give you a prioritized plan and a flat quote.
This post is about whether your house needs the work. What it costs once you have decided is a separate question with a wide range in it, and that is covered in what it costs to rewire a house. Two of the systems in the list above have specific answers of their own: knob and tube wiring and aluminum wiring in San Antonio homes.
What a rewire actually looks like
People picture every wall torn open. It is rarely that bad. We fish new grounded copper through existing cavities wherever we can and open drywall only where access demands it. We tell you up front where patching is needed, we work in sections so you can stay in the home, and we hand you the permit paperwork at the end.
If two or more of those signs sound familiar, do not wait for the worst one. Call us for an inspection and a straight answer.
Learn more about whole-home rewiring, and how we approach older homes in areas like Alamo Heights.