HOME ELECTRICAL REWIRING · SAN ANTONIO
Home Electrical Rewiring in San Antonio, TX
Whole-home rewiring for older San Antonio properties, staged to keep the house livable.
Keil Electric San Antonio rewires homes across the San Antonio metro, including cloth-insulated and knob-and-tube era wiring in the older inner-ring neighborhoods. Master-licensed, TX #40645, (830) 214-8444.
How to know when it is time, and what to expect.
When to bring us in for home electrical rewiring
Most home electrical rewiring calls start when the homeowner is planning ahead: a renovation, an addition, an EV charger, a generator, a panel upgrade, or any project where the existing electrical needs to be sized correctly for the new load. The earlier we walk the property, the cleaner the project sequencing. Bringing us in before the drywall closes saves rework. Bringing us in before the contract is signed with the GC saves scope confusion. We are happy to walk a property at the planning stage even if the install is still months out.
What we look at on the first visit
A walk of the property with attention to the panel (age, capacity, available breaker space), conduit accessibility, attic / crawlspace conditions, and the load picture (current loads + planned future loads). For installs that touch the service drop, we factor utility coordination from the start. The estimate we leave with is fixed for the scope as walked. Change orders only happen for genuinely new findings during the work, you hear about them before we proceed.
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 nowKnob-and-tube and early cloth-insulated wiring still turns up in San Antonio houses from the 1920s and 1930s, usually partially replaced at some point by someone who stopped when it got difficult. The mixed result is the actual hazard: modern wire spliced to brittle original insulation inside a wall with no accessible junction box.
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
Written warranty: 5-year on outlets, fixtures, and EV chargers; 10-year on wire and breakers; lifetime on panelboxes and surge protection. Parts and labor. Transfers with the home.
What is different about home electrical rewiring in Texas.
Some of what we do for home electrical 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 home electrical 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 home electrical rewiring.
We dispatch home electrical 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 home electrical 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 Home Electrical Rewiring in San Antonio, TX
How much does a whole-home rewire cost?
Cost is driven by square footage, accessibility (slab vs basement vs crawl), wall finish (drywall vs plaster), the number of circuits and devices, and panel work. Whole-home rewires on older homes typically run a meaningful project, and we quote in writing per room before any work begins.
How long does a rewire take?
Rough-in for a typical 2,000 sq ft home with reasonable access is one to two weeks. Trim, drywall coordination, and inspections add another one to two weeks. Larger or harder-access homes run longer. We give you a real schedule before we start.
Do I need to move out during a rewire?
Usually no. We phase the work so power stays on in occupied rooms and outages are scheduled. Larger homes can be rewired while the homeowner stays in place.
Will my insurance require this?
Many insurance carriers will not write or renew a homeowner policy on a house with active knob-and-tube or aluminum branch wiring. If your carrier flagged your wiring, we provide a remediation report after the rewire so the policy can be renewed.
Do you have to open every wall?
Not necessarily. Where access is available from above (attic) or below (crawlspace, basement), we can fish new cable without opening drywall. In modern slab-on-grade homes with insulated attics, more wall openings are usually required. We map the access path during the site walk.
Need home electrical 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.