Electrical panel upgrade in Texas: cost, signs you need one, and permits
If your home was built before the early 1990s, there's a real chance your panel is undersized for modern Texas living — central AC, EV chargers, induction ranges, tankless water heaters. Here's what an upgrade actually involves, and what it should cost.
Five signs your Texas home needs a panel upgrade
- Breakers trip when AC, dryer, and oven run together. That's a 100-amp service hitting its limit on a hot Texas afternoon.
- Federal Pacific (FPE) Stab-Lok or Zinsco panels. Both have well-documented failure modes where breakers don't trip on overload — a fire risk most insurers now flag in policy reviews.
- Fuse panels (no breakers at all). Common in 1960s Texas homes. Functional but obsolete and a hard sell on inspection.
- Visible damage. Burn marks, discoloration around breakers, melted insulation, persistent humming. Stop and call.
- You're adding a major load. EV charger (40–60 amps), pool equipment, ADU, tankless electric water heater, hot tub. A 100A panel often can't carry the new load even on paper.
How big should the new panel be?
The default for new construction in Texas is 200 amps. That's enough headroom for AC, EV charging, electric appliances, and a future heat pump conversion. 400-amp services exist for very large homes or ones with multiple AC zones plus shop loads, but most homeowners don't need them.
If you're in a 1,200–2,500 sq ft Texas home and your wishlist is one EV charger plus modern appliances, 200A is the right call.
What the upgrade actually involves
A "panel upgrade" in Texas usually means more than just swapping the breaker box. A proper licensed-electrician job covers:
- New main panel rated for the new amperage (typical brands: Square D QO, Eaton CH, Siemens)
- New service entrance cable from the meter to the panel — wire size scales with amperage
- New meter base if the existing one isn't rated for 200A
- New ground rods and grounding electrode conductor per current code
- Updated bonding for water and gas lines
- Whole-home surge protection (SPD) — required by current NEC and now common in Texas city amendments
- AFCI / GFCI breakers per the latest code on circuits that require them
- City permit and inspection — every Texas metro requires it
- Utility coordination — your power has to be cut and reconnected by the utility (CenterPoint in Houston, Oncor in Dallas/Fort Worth, Austin Energy, CPS Energy in San Antonio)
Realistic Texas panel upgrade pricing (2026)
- 200A main panel swap, same location, no service-entrance changes: $1,800 – $3,200
- 200A panel + new meter base + new SE cable: $3,500 – $5,500
- 200A upgrade + relocation of panel inside the home: $4,500 – $7,500
- 400A service for large home: $6,500 – $12,000+
- FPE / Zinsco replacement (because of safety): typically $2,800 – $4,800 even on a 100A swap, due to extra inspection scope
- EV charger circuit added during upgrade: add $400 – $1,200
Add 10–25% for two-story, three-story, or panels in finished basements. Texas labor rates run $90–$150/hr for licensed journeyman work, with master-level oversight on permit pulls.
Permits and the TDLR licensing rules
Texas licenses electricians through the Texas Department of Licensing and Regulation (TDLR). Three tiers do panel work:
- Master Electrician — pulls the permit and oversees the job
- Journeyman — does the work on site, supervised by a master
- Residential Wireman — limited to one- and two-family dwellings, also under a master
Apprentices can work on the crew but cannot be the only licensed person on a permit. The permit must be in the name of a master, and the city inspector signs it off after the work passes.
What to ask before you sign the contract
- What is the master electrician's TDLR license number?
- Is the permit and inspection included in the quoted price?
- Brand and model of the panel, plus the breaker brand?
- Will whole-home surge protection (SPD) be installed?
- How long will power be off during the cutover?
- What's the labor warranty? (1 year is the floor.)
Common quote red flags
- "Panel-only" quote that doesn't mention SE cable, meter, or grounding — common to undersell the line item and upcharge later
- No permit included (homeowner left to pull it "to save $200")
- Off-brand or no-name panels — the long-term cost of breakers and parts is much higher
- Refusal to provide the master's TDLR number
- Cash-only or large up-front deposit (>25% for residential service work is unusual)
FAQ
How long does a panel upgrade take?
Most 200A residential upgrades are a one-day job, with power off for 4–8 hours. Schedule with the utility 2–4 weeks ahead.
Do I have to upgrade if I'm adding an EV charger?
Not always. A licensed electrician runs a load calculation. If the existing panel has capacity, the answer is just a new circuit. If it doesn't, you upgrade.
Will my insurer raise rates if I don't replace an FPE panel?
Some Texas insurers will refuse to bind a new policy on a home with an FPE Stab-Lok panel; others quote with a surcharge. Replacement almost always pays back through premium savings within a few years.