Key takeaways
- Typical cost in Largo: $1,200–$2,800 (per installed panel); national range $1,300–$3,000.
- Biggest local factors: flooding, high humidity and long, hot cooling season.
- How long it takes: Most panel upgrades take about 4–8 hours of labor, plus utility scheduling.
- Permits: A permit is required, typically $50–$300; the electrician usually pulls it.
- Best timing: Upgrade before summer, when AC loads are highest.
- Before you hire: get at least three written, itemized quotes from licensed, insured Florida contractors.
How much does electrical panel upgrade cost in Largo, FL?
An electrical panel upgrade typically costs $1,300–$3,000, with an average around $2,150. Amperage, meter and service changes, and subpanels drive the price. Florida prices run 8% below the U.S. average, so a typical Largo job lands around $1,200–$2,800. Local labor rates, permit fees and your home's specifics move the final number.
| Item | Typical cost | Notes |
|---|---|---|
| 100-amp panel installed | $800–$1,500 | |
| 150-amp panel installed | $1,300–$1,600 | |
| 200-amp panel / 100→200 amp upgrade | $1,300–$3,000 | |
| 400-amp service | $2,000–$4,000 | |
| Meter box | $200–$800 | Must match the new service |
| Subpanel | $400–$1,750 | |
| Permit | $50–$300 | Electrician usually pulls it |
Largo is big enough to have a solid pool of local contractors, and many regional companies also serve the area, so getting three quotes is easy.
How we calculate costs
National ranges come from published cost surveys (cited below). Local estimates apply an approximate state cost index. Read our methodology.
Electrical Panel Upgrade cost questions for Largo, FL
- What is the cost of 100-amp panel installed in Largo, FL? The typical cost of 100-amp panel installed in Largo, FL is $740–$1,400, adjusted for Florida prices (national $800–$1,500).
- What is the cost of 150-amp panel installed in Largo, FL? The typical cost of 150-amp panel installed in Largo, FL is $1,200–$1,500, adjusted for Florida prices (national $1,300–$1,600).
- What is the cost of 200-amp panel / 100→200 amp upgrade in Largo, FL? The typical cost of 200-amp panel / 100→200 amp upgrade in Largo, FL is $1,200–$2,800, adjusted for Florida prices (national $1,300–$3,000).
- What is the cost of 400-amp service in Largo, FL? The typical cost of 400-amp service in Largo, FL is $1,800–$3,700, adjusted for Florida prices (national $2,000–$4,000).
- What is the cost of meter box in Largo, FL? The typical cost of meter box in Largo, FL is $180–$740, adjusted for Florida prices (national $200–$800). Must match the new service.
- What is the cost of subpanel in Largo, FL? The typical cost of subpanel in Largo, FL is $370–$1,600, adjusted for Florida prices (national $400–$1,750).
- What is the cost of permit in Largo, FL? The typical cost of permit in Largo, FL is $50–$280, adjusted for Florida prices (national $50–$300). Electrician usually pulls it.
- What is the cost of move the panel in Largo, FL? The typical cost of move the panel in Largo, FL is $740–$2,800, adjusted for Florida prices (national $800–$3,000).
- What is the cost of main breaker replacement in Largo, FL? The typical cost of main breaker replacement in Largo, FL is $180–$280, adjusted for Florida prices (national $200–$300). $500–$2,000 if the bus bar is damaged.
- What is the cost of AFCI/GFCI breakers in Largo, FL? The typical cost of AFCI/GFCI breakers in Largo, FL is $30–$60 each, adjusted for Florida prices (national $35–$60 each). Often required by code.
What affects electrical panel upgrade in Largo
Largo has hot, humid summers and mild winters. Upgrade before summer, when AC loads are highest.
Signs you need a panel upgrade
- Breakers trip often
- Lights flicker or dim when appliances run
- You rely on power strips or can't run appliances together
- The panel buzzes, feels hot or smells burnt
- Rust or visible damage
- A Federal Pacific or Zinsco panel, or plans for an EV charger or heat pump
Common questions about electrical panel upgrade in Largo
How much does an electrical panel upgrade cost in Largo, FL?
Most panel upgrades cost about $1,200–$2,800 in Largo, FL. A 100-to-200-amp upgrade typically runs $1,300–$3,000 nationally.
Do I need a 200 amp panel?
Most modern homes with central air, electric appliances or an EV charger are planned around 200 amps. A load calculation tells you for sure.
Is a Federal Pacific or Zinsco panel dangerous?
Both are widely flagged as outdated, and many electricians recommend replacing them.
How much does a subpanel cost?
A subpanel typically costs $400–$1,750 installed and can add circuits for a garage, addition or EV charger.
Timeline, permits and DIY in Largo
How long it takes
Most panel upgrades take about 4–8 hours of labor, plus utility scheduling.
Permits
A permit is required, typically $50–$300; the electrician usually pulls it. Check with the Largo building department for local rules.
DIY or hire a pro?
Not a DIY job: a licensed electrician must do the work and coordinate with the utility.
Questions to ask Largo contractors
Ask every bidder the same questions so you can compare quotes apples to apples.
- Did you do a load calculation for my home?
- Does the quote include the meter, permit and utility coordination?
- Which breakers will be AFCI or GFCI to meet code?
- Will the power be off, and for how long?
Maintenance that prevents costly repairs
- Have the panel inspected if breakers trip often
- Never ignore buzzing or burning smells
- Label circuits clearly
How to hire for electrical panel upgrade in Largo
- Use a licensed, insured electrician.
- Ask for a load calculation to size the new service.
- Confirm the permit, inspection and utility coordination are included.
- Get the warranty for parts and labor in writing.
Electrical Panel Upgrade in Largo: FAQs
How much does an electrical panel upgrade cost in Largo, FL?
Nationally, most upgrades cost $1,300–$3,000. Local permit fees and utility requirements change the final price.
Do I need a permit for a panel upgrade in Largo?
Yes. A licensed electrician typically pulls the permit and coordinates with the utility.
Will I need a panel upgrade to add a heat pump in Largo?
Possibly. Ask for a load calculation; many older homes need 200-amp service for heat pumps and EV chargers.
How much does electrical panel upgrade cost in Largo compared to the national average?
With Florida's regional cost index of 0.92, expect roughly $1,200–$2,800 in Largo, versus $1,300–$3,000 nationally.
How long does electrical panel upgrade take in Largo?
Most panel upgrades take about 4–8 hours of labor, plus utility scheduling. Permit and inspection scheduling in Largo can add a few days.
Do I need a permit for electrical panel upgrade in Largo?
A permit is required, typically $50–$300; the electrician usually pulls it. Confirm with the Largo or county building department.
Which Largo ZIP codes does this guide cover?
This guide applies to Largo ZIP codes 33770, 33771, 33773, 33774, 33778, 33779, plus the surrounding area.
Electrical Panel Upgrade near Largo
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Other home services in Largo
Sources: This Old House — Cost to upgrade an electrical panel · Angi — Cost to upgrade an electrical panel. Ranges are rounded estimates; see our editorial policy.
Local risk factors reflect general Florida climate patterns; check FEMA's National Risk Index for county-level ratings. Local estimates apply an approximate regional cost index to national ranges.