Key takeaways
- Most electrical deal breakers in a home sale come from a short list of findings: certain panel brands, aluminum branch wiring, knob and tube, missing grounding, heat damage, undersized service, a missing main disconnect and amateur wiring.
- A finding becomes a deal breaker when nobody can say what it costs to fix, so a written flat price usually matters more than the finding itself.
- Insurers and lenders react to some electrical findings on their own, which means a buyer who is willing to accept a problem may still be unable to close on it.
- A licensed electrician's evaluation early in the option period gives both sides time to repair, credit or renegotiate before the deadline.
- Wattsmith prices every repair in its report from a published flat-rate price book and handles the permit and city inspection where the work requires one.
You are under contract, the option clock is running, and the TREC inspection report just came back with a line about the electrical panel. That one line can decide whether the house closes on schedule, gets renegotiated or falls apart. Electrical deal breakers in a home sale are not mysterious. The same short list of findings shows up again and again in San Antonio homes, and every one of them has a known correction and a price you can get in writing before your option period ends.
This guide is for buyers, sellers and the agents between them. It covers the electrical problems that kill a home sale most often, why each one makes people nervous, and what it actually takes to fix. Read it before you panic, and before you walk away from a house that may only need one afternoon of licensed work.
If you already have a report in hand and want to know what you are looking at, call or book a visit and we will tell you which findings need a licensed electrician on site and which can be priced from the report.
Why electrical problems kill a home sale when other repairs do not
A buyer can live with an ugly kitchen. An electrical finding is different because it reads as a fire risk and because most people have no idea what it costs. A roof has a rough price per square. A panel note on an inspection report has no number attached, and an unknown number in the middle of an option period feels like an open-ended liability.
Three groups react to electrical findings, and each one reacts for its own reasons. The buyer worries about safety and about getting stuck with a large bill after closing. The insurance company worries about claims, and some carriers will decline to write a policy or will ask for proof of repair when they see certain panels or wiring types. The lender needs insurance in place to fund the loan, and on government-backed loans the appraiser can call out an obvious hazard as a condition of the loan. That last point is the one people miss: a buyer who is willing to accept a problem may still be unable to close on it.
We cover the insurance side in what to do when insurance flags your electrical and the loan side in FHA and VA loan electrical requirements. Both are worth reading if you are financing the purchase.
Federal Pacific and Zinsco panels are the most common electrical deal breaker
Federal Pacific Stab-Lok and Zinsco panels were installed in a large share of homes built from the 1950s into the 1980s, and plenty of them are still in service around San Antonio. Both brands carry long-documented concerns. With Federal Pacific, the question is whether the breakers trip reliably when a circuit is overloaded or shorted. With Zinsco, the concern is breakers that can overheat and fuse to the bus, so the breaker stays on when it should cut power.
Buyers react because the panel is the one component that protects every wire in the house. Insurers react because these brands are widely known in the industry, and some carriers will not write a policy on a home that still has one. Once the brand is named on the inspection report, the question in the negotiation is rarely whether to replace it. The question is who pays and when.
The correction is a panel replacement. That means a new panel and new breakers, the circuits moved over and labeled, grounding and bonding brought up to current requirements at the panel, a permit from the San Antonio Development Services Department, a city inspection, and coordination with CPS Energy when the service has to be disconnected. Most replacements are a single day of work once the permit is in hand.
In our published price book this work is the Federal Pacific or Zinsco panel replacement task, from $3,989. The price is set before work starts, and it includes the permit and the city inspection we schedule for you. Starting price. Your tech confirms the final number on site before any work.
For the history behind both brands and how to tell them apart, read Federal Pacific and Zinsco panels in San Antonio. To book the replacement itself, see our panel upgrade and replacement service.
Aluminum branch wiring worries insurers more than buyers expect
Homes wired roughly from the mid 1960s to the mid 1970s sometimes have aluminum branch circuits instead of copper. The wire itself is not the problem. The connections are. Aluminum expands and contracts more than copper and oxidizes at the terminals, so over the years the connections at outlets, switches and splices can loosen, heat up and scorch.
Buyers usually hear the words aluminum wiring and assume the whole house has to be rewired. That is rarely true. Insurers are the bigger obstacle, because some carriers will ask for proof that the connections have been remediated before they will bind a policy.
The standard correction is remediation at every connection point: each aluminum conductor gets a short copper pigtail joined with a connector listed for aluminum to copper, at every outlet, switch, fixture and junction box. The wire stays in the walls. A full rewire is the other option and makes sense when the house needs other work anyway.
We price remediation from our flat-rate book as the Aluminum branch wiring remediation, per circuit task, from $1,389, so the buyer and seller can negotiate around a written number instead of a guess. Starting price. Your tech confirms the final number on site before any work.
If this is the finding on your report, read buying a house with aluminum wiring and aluminum wiring repair methods before you renegotiate.
Knob and tube wiring ends more insurance quotes than inspections
Knob and tube is the oldest wiring method you will find in San Antonio, mostly in pre-war homes in neighborhoods like Alamo Heights and Monte Vista. It has no ground conductor, its insulation turns brittle with age, and it was designed to shed heat into open air, which is a problem once someone blows insulation over it in the attic.
Many insurers will not write a new policy on a house with active knob and tube. That turns it into a hard deal breaker for a financed buyer even when the wiring looks fine. The correction is replacing the remaining knob and tube circuits with modern grounded cable. Sometimes that is a partial rewire, because earlier owners already replaced part of the house. The electrician's job is to find out how much is still live and price exactly that.
Our guide to knob and tube wiring explains how we confirm what is still energized, and our whole-home rewiring service covers the replacement.
No grounding and two-prong outlets raise questions about the whole system
Two-prong outlets, or three-prong outlets that test as open ground, tell a buyer the house was wired before grounding was standard or that someone swapped outlets without running a ground. On its own this is usually a repair item, not a crisis. It becomes a deal breaker when it shows up next to other findings and the buyer starts wondering what else is behind the walls.
The fixes range from GFCI protection on ungrounded circuits, which is an accepted correction in many cases, to running new grounded circuits to the places that need them most, like the kitchen and the rooms where computers and appliances live. The electrician also checks the grounding electrode system and bonding at the panel, because a missing ground at the service is a more serious finding than a few two-prong outlets.
See two-prong outlets in older San Antonio homes and what an open ground means for the details.
Overheated connections and scorched breakers read as active fire risk
Discolored outlets, melted insulation, a breaker that is hot to the touch or a burnt smell at the panel are the findings that make buyers stop the deal on the spot. Unlike an old panel brand, this is evidence that something has already gone wrong.
The cause is usually a loose connection, an overloaded circuit, a breaker that no longer grips the bus, or aluminum wiring at a device not rated for it. The correction depends on the cause, which is why a licensed electrician needs to open it up and trace it. A scorched outlet is often a small repair. A scorched bus bar can mean the panel has to be replaced. Do not let anyone guess which one it is from a photo.
An undersized or damaged service can stall a sale and a later upgrade
Older homes in San Antonio were often built with 60 or 100 amp service. Add central air, an electric range, an electric dryer and a pool pump, and the service may be working at its limit. Buyers who plan to add an EV charger or solar notice this right away.
Damage at the service counts too: a rusted meter base, a leaning mast, a weatherhead pulling away from the house, or a service drop rubbing on the roof. The meter is CPS Energy's, but the meter base, mast and service entrance conductors belong to the homeowner, and repairs to them need a licensed electrician, a permit and coordination with CPS Energy for the disconnect and reconnect.
Read meter loop, mast and weatherhead repairs with CPS Energy and upgrading an electrical panel to 200 amps if your report mentions the service.
A missing main disconnect confuses buyers and worries inspectors
Some older panels have no single main breaker. Shutting off the house means flipping several breakers in a row, and in an emergency nobody knows which ones. Other homes have a panel that was replaced without a proper main, or a disconnect that is missing or unlabeled. Inspectors flag this because the first thing anyone needs in an electrical emergency is one switch that kills the power.
The correction is usually a new panel with a main breaker or an added main disconnect ahead of the existing equipment, permitted and inspected. Because it overlaps with panel replacement, buyers often bundle it with a Federal Pacific or Zinsco replacement and solve both findings in one visit.
DIY wiring and unpermitted work is the finding nobody can price from a photo
Extension cords stapled along baseboards, open splices in the attic, a subpanel fed with undersized wire, a garage circuit run in the wrong cable, outlets with no box behind them. Amateur work shows up in flips, in rentals and in houses where a previous owner liked weekend projects.
This is the hardest deal breaker to price because nobody knows how far it goes. The fix is to have a licensed electrician trace each piece of amateur work, list it, and price the correction one item at a time. That turns a vague worry into a line-by-line repair list both sides can negotiate.
The difference between licensed work and handyman work is explained in licensed electrician vs handyman in Texas, and permit rules are in electrical permits in San Antonio.
How to keep an electrical deal breaker from ending the sale
Almost every one of these findings becomes manageable once it has a written price. The deals that fall apart are the ones where nobody gets a licensed electrician in before the option period runs out. Here is the order that works.
- Book a licensed electrician as soon as the TREC inspection report flags anything electrical. Days matter inside an option period.
- Get a full evaluation, not a quick look at one item, so you are not surprised by a second finding after you renegotiate the first.
- Ask for a flat price on each repair, in writing, from a published price book.
- Decide with your agent whether to ask for repairs before closing, a credit at closing, a lower price, or to walk away.
- If the seller does the repairs, ask for the permit and the passed city inspection, not just a receipt.
The full evaluation we run for a home purchase is the Real estate electrical inspection task, from $399. It covers the whole electrical system, not just the items your general inspector flagged, and every finding comes back with a recommendation. Starting price. Your tech confirms the final number on site before any work.
Once you have the report, seller credits for electrical repairs and electrical repairs after a home inspection in Texas walk through how to use it in the negotiation.
What our real estate electrical inspection report gives you
Our report is built for a negotiation, not a filing cabinet. Findings are grouped by area of the house, and each one carries a recommendation and a rating of Safety, Repair or Maintenance, so you can see at a glance what has to be handled before closing and what can wait. Photos of each problem are labeled and placed beside the finding they belong to. The report closes with a priority action plan.
A Texas licensed master electrician signs the report in our app, and it carries a certificate of completion that shows the document has not been altered since it was signed. You receive it by text and email, ready to forward to your agent, the seller's agent, your lender or your insurance company. Because we are a licensed contractor (TDLR license TECL 41806) with a published price book, the same visit can turn every finding into a flat price, approved before any work starts.
If you are the agent, send this page to your buyer or seller before the option period gets tight. And if you want to see every price before you call, start with our pricing page.
Ready to find out whether your finding is a deal breaker or a one-day repair? Book a real estate electrical inspection or call us to schedule. We are veteran-owned, we serve San Antonio and the surrounding service areas, and we will tell you on the phone what the visit will cover.