Two neighbors can buy the same Level 2 charger and get installation quotes that look nothing alike. That is not usually a sign that one electrician is gouging and the other is cutting corners. The charger is the same for both; the distance, the route, the panel and the walls are not.
We do not publish a price for that reason. Instead, here is every factor that moves a quote on a South Florida home, so you can see which apply to yours and compare two quotes on equal terms. For the bigger picture, start at the Florida Home EV Charging Guide; for the service itself, see home EV charger installation.
The factors at a glance
| Factor | Keeps the job simple | Adds work |
|---|---|---|
| Distance, panel to charger | Panel in the garage, charger on the same or next wall | Panel on the far side of the house, charger in a detached carport or at the driveway |
| Panel capacity | Load calculation shows room and there are two free breaker spaces | No capacity (load management or a panel or service upgrade) or no spaces |
| Circuit size | A 40 A charger on a 50 A circuit with a short run | 48 A charger on a 60 A circuit, or a long run that needs larger wire |
| Route and wall type | Open garage wall, exposed conduit acceptable | Finished drywall to fish through, block walls, stucco, a hot attic |
| Outdoors | Wall-mounted under an overhang near the panel | Pedestal at the driveway, trenching, concrete cutting |
1. Distance from the panel to the charger
Every foot between the panel and the charger is wire, conduit and labor, and the heavier the circuit, the more each foot matters. In many South Florida houses the panel is in the garage or on an outside wall, which makes a short run possible; in others, often older homes added onto over the decades, it is at the far end of the house. A charger on the wall nearest the panel, with a cable that still reaches the port, can save a long run. Our guide to where to put the charger in a garage covers cable reach and placement.
2. Whether the panel has room
A Level 2 charger is a large, long-running load. Before anyone quotes seriously, the electrician should check two things: whether the service has spare capacity, and whether the panel has physical space for a two-pole breaker. The first is answered by a load calculation, not by glancing at the main breaker. For an existing home, the code allows the calculation to use a year of the utility's maximum-demand data under conditions (NEC 220.87, summarized here; confirm with your building department).
The possible outcomes set the size of the job:
- Capacity and space: a new breaker and circuit. The simplest case.
- Capacity, no space: sometimes a tandem breaker is allowed by the panel's label, sometimes a small subpanel is needed.
- No capacity: a lower charger setting, a load management device, or a panel upgrade. Our comparison of load management versus a panel upgrade explains the trade-offs, and does my panel have room for an EV charger shows how to read your own panel.
Many 1950s to 1980s Florida homes still have their original panel, sometimes a brand with no replacement breakers left, which turns a simple addition into a larger conversation. See EV charging in older Florida homes.
3. Breaker size and wire gauge
EV charging counts as a continuous load, so the breaker must be sized at not less than 125% of the charger's maximum output: a 40 A charger needs at least a 50 A breaker, a 48 A charger at least a 60 A breaker (NEC 625.41, Mike Holt summary). The wire is sized to the breaker, so a bigger charger means heavier copper.
Two things push wire size up beyond that minimum. A long run can need a larger conductor to keep voltage drop reasonable. And cable routed through a South Florida attic, which gets very hot in summer, may need to be sized up for the heat. Our guide to EV charger breaker and wire size has the full table.
The opposite lever is useful too. Many hardwired chargers let the installer set a lower maximum current, and when that setting is locked behind restricted access the code lets the adjusted value be used as the rating (NEC 625.42 summary). If your car only charges at 32 A or 40 A, a smaller setting can mean a smaller circuit, or no panel upgrade at all. See how many amps an EV charger needs.
4. The route: drywall, block and stucco
South Florida houses are built differently from the ones in most national cost articles, and the wall type sets the method:
- Drywall garage walls. Framed walls can often be fished; finished walls may need small openings patched.
- Concrete block (CBS) walls. Most exterior walls here are concrete block with stucco. You do not fish wire through a block wall the way you do through studs, so the usual answer is surface-mounted conduit, neatly run and painted if you like, or a route through the attic and down.
- Stucco exteriors. Any penetration through stucco needs to be sealed properly so rain does not follow the conduit into the wall. That is a small detail with a long life.
- Attics. An attic route keeps conduit off the walls, but it is slow, hot work and brings the wire-sizing point above.
5. Outdoor locations, carports and trenching
Many homes here park under a carport or in the driveway. An outdoor charger needs equipment rated for the location and a spot out of standing water, and near the coast salt air shortens the life of exposed hardware. A pedestal at the driveway usually means trenching or cutting concrete or pavers, then restoring them, which is often the most labor-heavy item on a residential quote. Details are in outdoor EV chargers in Florida rain and salt air and driveway and carport pedestals.
6. The charger itself: hardwired or plug-in
A plug-in charger needs a receptacle, typically a NEMA 14-50, and every receptacle installed for EV charging needs GFCI protection (NEC 625.54, Leviton summary). That means a GFCI breaker and, ideally, an EV-rated receptacle built for repeated plugging and long charge sessions. A hardwired charger skips the receptacle and usually has its own ground-fault protection built in. Our comparison of hardwired versus plug-in chargers goes further, and our charger roundup covers models.
7. Permit and inspection
An EV charger circuit is electrical work, and in Miami-Dade County's unincorporated areas the building department states plainly that an electrical permit is required for electrical work. Cities run their own building departments, so the process varies by address. The permit brings a plan or application, an inspection, and sometimes a re-inspection if the inspector wants a correction. A legitimate quote includes the permit and names who pulls it. See EV charger permits in South Florida.
8. Condo garages
Condo installs are their own category. Florida law lets a unit owner install a charger in their limited common element or assigned parking space, with the electricity separately metered and paid by the owner (section 718.113(8), Florida Statutes). The association can set conditions, such as a licensed installer and reasonable safety and architectural standards. Cost is driven mostly by distance: the run often goes from the unit's meter across the garage, sometimes through fire-rated walls. See condo EV charger installation.
How to compare two quotes
Ask each contractor to put these in writing, then compare line by line:
- License number and the name the permit will be pulled under.
- Whether a load calculation was done, and its result.
- Breaker size, wire size and material, and the charger's current setting.
- The route: inside walls, surface conduit, attic, or underground.
- Who supplies the charger, and whether mounting it is included.
- Whether the permit, inspection and any wall patching are included.
- What is excluded, such as painting or concrete restoration.
A quote that is much lower often has a shorter scope: no permit, a smaller wire, or no load calculation. Our guide to hiring an EV charger installer in Florida lists the red flags. If you are pricing chargers for a business or a building, the drivers are different; see commercial EV charger installation cost factors.
Questions homeowners ask
Why won't an electrician give me a price over the phone?
Distance, panel capacity, route and wall type decide the job, and those need a look or at least clear photos of the panel, its label and the parking spot.
Is there still a federal tax credit that lowers the cost?
Not for new installs. The federal 30C credit is not allowed for property placed in service after June 30, 2026. Our post on the 30C credit ending explains what changed.
Does a block wall make the job more expensive?
It changes the method. Surface conduit on block is common and tidy when done well; an attic route is the alternative.
What should I have ready for a quote?
Photos of the open panel and its label, the main breaker, the meter, and the parking spot, plus your car's maximum charging rate. Our installation checklist lists the rest.
KRW Electric (EC13012832) installs home EV chargers across Miami-Dade, Broward and Palm Beach counties and handles the permit and inspection on its jobs. Send us photos of your panel and parking spot or call (305) 359-7312, and we will tell you which of these factors apply to your house.
Reviewed by Kyle White, KRW Electric Company LLC — licensed electrical contractor EC13012832.
