ELECTRICAL WIRING AND REWIRING · SAN ANTONIO
Electrical Wiring and Rewiring in San Antonio, TX
New wiring, partial rewires, and whole-home rewiring across the San Antonio metro.
Keil Electric San Antonio handles wiring and rewiring across the San Antonio metro, from single circuits to whole-home rewires in older properties. Master-licensed, TX #40645, (830) 214-8444.
San Antonio: Most days we're already in the area. Same-day appointments when capacity allows. After-hours emergencies dispatched when a licensed electrician is available, a real person at the local shop answers and tells you the ETA on the call.
Call nowWhole-home rewiring in San Antonio is mostly an inner-ring problem. Houses in Monte Vista, Beacon Hill, King William, Alamo Heights, and Olmos Park were built with wiring methods that have simply aged out, and they were built with plaster and lath that makes getting to it slow. Doing this well is less about the wire and more about the route.
Permits and inspections
Not every job requires a permit. When the local AHJ requires one, we pull it, schedule the inspection, and stay with the job until it passes. No paperwork on you.
What's covered
10-year written warranty on circuit runs and wire. Parts and labor. Stays with the home and transfers to the next owner.
What is different about electrical wiring and rewiring in Texas.
Some of what we do for electrical wiring and rewiring is shaped by the codes and conditions specific to Texas. Here is what tends to differ versus other states.
Code adoption in Texas
Texas adopts the National Electrical Code at the state level through the Texas Department of Licensing and Regulation, with most cities in the San Antonio metro adopting the most recent NEC cycle within a year or two of publication. Schertz, New Braunfels, Cibolo, and the other cities we cover each maintain their own permitting offices with slightly different inspection scheduling and form workflows. We track which cycle each AHJ in our coverage area is currently enforcing, so the scope we write for a job in Schertz is current to that city, not just current to "Texas." When a project crosses jurisdictions or sits in unincorporated county, we route the permit through the correct authority and tell you upfront which inspection cadence applies.
Hot-climate considerations
Summers across the San Antonio metro run long and hot, and that affects electrical wiring and rewiring in ways that are easy to underestimate. Panels mounted on west-facing exterior walls run hotter all afternoon. Attic-mounted equipment derates per code because ambient attic temperatures regularly clear 130°F. AC compressors pull near-rated current for hours at a stretch through July and August, which puts more thermal cycling on terminations than the same equipment would see in a milder climate. We size conductors and breakers with that summer load profile in mind, not just the nameplate minimum. On older homes we look closely at terminations that may have loosened from years of heat cycling, those are a common cause of intermittent issues that get misdiagnosed elsewhere.
Severe weather and storm response
The metro sees thunderstorm hail, the occasional derecho, and the post-storm spike in generator and surge-protection demand that comes with each event. We keep enough surge-protection inventory at the shop to swap out a damaged whole-home unit same-day after a strike, and we know which generator and transfer-switch SKUs are realistic to source quickly when the supply chain tightens after a regional event. After the 2021 winter storm we also got a lot more careful about which loads customers actually need on backup, versus which loads end up on the generator only because nobody asked the question at install time.
Cities where we run electrical wiring and rewiring.
We dispatch electrical wiring and rewiring across the San Antonio area from our shop. Pick your city for the local page, or "See all cities" for the full coverage list.
Why hiring a licensed electrician matters.
For electrical wiring and rewiring, here's the honest comparison. We'd tell you the same thing if we weren't trying to win the job.
A licensed electrician
Unlicensed for electrical
Doing it yourself
Spread the cost over time.
Pre-approval through Wisetack takes under 3 minutes. Soft credit check, no impact to your score.
- 0% APR for 3, 6, or 12 months (qualifying credit)
- 2–10 year low-interest plans for larger projects
- Soft credit check, takes less than 3 minutes
Financing through our partner Wisetack. Loan terms, APR, and approval subject to underwriting. Not all applicants qualify.
Common questions for Electrical Wiring and Rewiring in San Antonio, TX
How do I know if my home needs to be rewired?
Common signs: knob-and-tube or aluminum wiring, frequent breaker trips, two-prong outlets in main living areas, scorched outlet faces, warm switches, or a panel that has been pushed past its original capacity. An inspection visit confirms whether the work is repair-scope or rewire-scope.
Do you have to open every wall to rewire a home?
Not always. Skilled rewires use existing wall cavities, attic and crawl space access, and small fish-tape paths to minimize wall damage. We document the access plan room-by-room before quoting so you see the trade-off between cost, time, and patch work.
How long does a whole-home rewire take?
Typical single-family rewires run 1-2 weeks of on-site work depending on home size, finish complexity, and how many circuits need to be added. We confirm the timeline in the written scope.
Will the home have power during a rewire?
Most rewires are sequenced so the home stays usable during the project - circuits go offline one section at a time. We coordinate closely if there are health, work-from-home, or temperature constraints.
Is permit and inspection required for rewiring?
Yes for any rewire scope that touches the panel or new circuits. The exact permit path varies by city; we handle the permit application and inspection scheduling as part of the project.
How much does a house rewire cost?
A house rewire is bid by home size, wall access (open walls during a remodel cut labor significantly versus fishing through finished walls), and any code-correction items found during the walk. The price is in writing before any work starts.
Do you do whole home rewire jobs?
Yes. Whole home rewire is one of our largest scopes. We stage room by room so part of the home stays powered each day. Multi-day to multi-week timeline depending on size.
Do I need to move out during a rewire?
Not always. We can stage the work room by room and keep at least part of the home powered each day. For full rewires on smaller homes or when the panel is also being replaced, a few-day relocation is sometimes simpler. We tell you which path matches your home before quoting.
What about aluminum wiring?
Aluminum branch wiring (typically 1965-1973 era) has documented failure modes at connection points. We either replace the runs end-to-end or pigtail with copper using approved CO/ALR connectors, depending on the actual condition of the aluminum and the driver of the job (insurance, sale, code).
Need electrical wiring and rewiring in San Antonio?
Tell us about the project. A licensed San Antonio licensed electrician walks the job in person and writes a real scope, backed by our written warranty.