Most commercial property owners approach EV charger installation as an electrical project. They contact an electrician, get a quote for the charger hardware and wiring, and assume that''s the bulk of the work. What they find out later — often after a project runs over budget or hits unexpected delays — is that the electrical work is only part of the picture. The other half is civil: the concrete pads that mount the equipment, the trenching that routes conduit under the lot, the grading adjustments that affect where drains and transitions land, and the ADA-compliant paths of travel that California code requires.
For property owners and managers in the Bay Area, EV charging is no longer optional planning. The 2022 California Green Building Standards Code — commonly called CalGreen — now mandates EV-capable infrastructure at new non-residential developments with 10 or more parking spaces, with requirements scaling up significantly for larger facilities. Existing commercial properties facing major renovations also trigger compliance reviews. Understanding the full scope of what an EV charger installation actually involves — before you start — is the difference between a smooth project and a costly one.
This post covers the civil and site work components of EV charging installation that property owners most commonly underestimate: concrete pad requirements, conduit trenching through existing pavement, California compliance standards, and how to plan a lot layout that accommodates both current installation and future expansion.
Why EV Charger Installation Starts With the Site, Not the Electrician
An electrician can wire a charger. What they cannot do is determine where to place it relative to drainage slopes, how to route conduit under an existing parking lot without creating ADA trip hazards at transitions, or whether the concrete pad needs to be elevated to prevent water from pooling at the equipment base. Those decisions belong to the civil side of the project — and if they''re not made correctly before electrical work begins, they create problems that are expensive to fix after the fact.
The right starting point for any commercial EV charger installation is a site assessment that maps existing utility locations, pavement elevations, drainage flow, ADA path-of-travel routes, and the distance from proposed charger locations to the electrical service panel. That assessment drives the civil design: where to cut the pavement for conduit trenches, where to pour concrete pads, how many pull boxes are needed along long conduit runs, and whether any regrading is required to ensure proper drainage around new equipment pads.
Skipping this step and handing the project directly to an electrician typically results in change orders — for pavement saw-cutting and restoration that wasn''t scoped, for concrete work the electrician doesn''t perform, or for ADA path corrections caught during inspection.
Concrete Pads, Trenching, and Pavement Restoration: The Civil Scope
The civil work involved in a commercial EV charger installation typically includes the following components:
Concrete Pads
Pedestal-mounted and bollard-style EV chargers require a poured concrete base. The pad must be level, properly drained so water doesn''t pool at the equipment, and anchored to manufacturer specifications — typically with embedded anchor bolts set according to the charger''s mounting template. The pad elevation relative to the surrounding pavement matters: a pad set too low becomes a catch basin after rain, accelerating corrosion of the equipment base and creating a slip hazard.
Concrete pads also need to accommodate protective bollards, which are required in any location where vehicles could contact the charging equipment. The bollard footings are typically poured as part of the same concrete work as the pad.
Conduit Trenching and Pavement Saw-Cutting
Getting electrical conduit from the service panel to the charger locations requires running it underground — which means cutting through existing asphalt or concrete, excavating a trench, installing conduit at the required depth (typically at least 18 to 24 inches below finished grade for installations under paved areas), backfilling, and restoring the surface. For a retrofit installation on an existing parking lot, this is the most disruptive phase of the project.
The conduit routing decisions made during the civil design phase directly affect cost. The shorter the run from the electrical panel to the charger locations, the less trenching is required. But short runs don''t always align with where chargers should go for traffic flow, ADA compliance, or tenant convenience — which is why the site design has to balance all of these factors before any cutting begins.
One of the most cost-effective decisions a property owner can make is to install spare conduit runs during initial trenching — empty conduits routed to future charger locations that aren''t being activated yet. Adding conduit during an open trench costs a fraction of what it costs to cut and restore pavement again later. If your property is likely to add charging capacity over the next five to ten years, planning for that expansion during the first installation avoids reopening the lot.
ADA-Compliant Paths of Travel
California''s accessibility requirements for EV charging stations go beyond the charger itself. The path of travel from the accessible parking spaces to the charging equipment must meet ADA standards — appropriate width, cross slopes within tolerance, and a continuous accessible route to the building entrance. Where new charger stalls are added near existing accessible parking, this sometimes requires adjustments to striping, curb ramps, or paving transitions that weren''t part of the original lot design.
California Compliance: What the 2022 CalGreen Code Requires
The 2022 California Green Building Standards Code significantly expanded EV charging infrastructure requirements for new construction. For non-residential developments, the requirements scale with the number of parking spaces:
- Facilities with 9 or fewer spaces have no EV infrastructure requirement.
- Facilities with 10 to 25 spaces must provide EV-capable spaces (conduit and panel capacity, but no installed charger required).
- Facilities with 26 or more spaces must provide both EV-capable spaces and installed Level 2 EV chargers, with requirements increasing as lot size grows.
- For facilities over 200 spaces, 20 percent of spaces must be EV-capable and 25 percent of those must have installed chargers.
These are minimums for new construction. Many Bay Area jurisdictions have adopted additional local requirements or incentives that go further than state code. Property owners adding EV charging to existing facilities should confirm which code cycle applies to their project and whether any local amendments affect the scope.
Permit requirements for EV charging installation in California are governed by Assembly Bill 1236, which requires every city and county to maintain an expedited, streamlined permitting process specifically for EVSE. In practice, this means permits are often issued over the counter for installations under 400 amps, though the civil work — trenching, concrete, and pavement restoration — may require separate building or site permits depending on the jurisdiction.
Planning a Lot Layout That Accommodates Future EV Expansion
EV adoption in California is accelerating, and the infrastructure decisions you make today will determine how much it costs to keep pace tomorrow. The most common and expensive mistake in commercial EV charger installation is treating it as a one-time, minimum-compliance project — installing only what the code requires today, with no conduit capacity or design flexibility for the additions that will almost certainly come within five to ten years.
A forward-looking lot layout accounts for several things beyond the immediate installation:
- Spare conduit runs. As noted above, running empty conduits to future charger locations during initial trenching costs relatively little and saves the cost of cutting pavement again later. ChargePoint, one of the largest commercial EVSE providers, recommends planning conduit capacity for 5 to 15 percent of parking spaces in high-EV-adoption markets like the Bay Area.
- Electrical panel capacity. EV chargers are continuous loads — they draw power at their rated capacity for extended periods. NEC Article 625 requires circuits to be sized at 125 percent of the charger''s rated load. A panel designed only for today''s chargers will require a costly upgrade when additional units are added. Sizing the panel for anticipated future load during the initial installation is significantly cheaper than upgrading later.
- Stall placement and traffic flow. Charger stalls placed without considering traffic circulation can create backups in drive aisles during peak hours. The stall layout should be reviewed alongside the overall parking lot design — not treated as an afterthought added to wherever space is available.
- Equipment protection. Bollards, wheel stops, and setback distances from drive aisles protect charger hardware from vehicle contact. These are civil elements, not electrical ones, and they need to be incorporated into the pavement and concrete design from the start.
The Civil Contractor Is as Important as the Electrician
EV charger installation is a two-trade project, and the civil side — concrete, trenching, grading, ADA compliance, and pavement restoration — is what determines whether the finished installation is durable, compliant, and positioned for future expansion. Getting the civil work right the first time avoids the most common and costly source of change orders and rework in commercial EV projects.
EarthTek handles the civil scope of EV charger installation across the Bay Area: site assessment, concrete pad work, pavement saw-cutting and restoration, conduit trenching, and grading adjustments. We coordinate directly with electrical contractors so the civil and electrical work proceed from a single integrated site plan. If you''re planning EV charging for your commercial property — whether for new construction or a retrofit — contact us to discuss the site work scope before your electrician finalizes their bid.
Frequently Asked Questions
Do I need a permit to add EV chargers to my parking lot in San Jose?
Yes. EV charger installation requires electrical permits and, for the civil work, typically a building or site permit covering trenching, concrete work, and pavement restoration. California law under Assembly Bill 1236 requires cities and counties to maintain an expedited permitting process for EVSE, and installations under 400 amps can often be permitted over the counter. Your jurisdiction''s specific requirements will govern — confirming this early in the design process avoids delays.
What is the difference between EV Capable, EV Ready, and EVSE in California building code?
Under the 2022 CalGreen Code, EV Capable means the electrical panel and raceway infrastructure is in place but no charger is installed. EV Ready means a fully wired 208/240V outlet or charger is installed and ready to use. EVSE (Electric Vehicle Supply Equipment) refers to an installed, operational Level 2 or DC fast charger. CalGreen requires different combinations of these tiers depending on the facility type and number of parking spaces.
How disruptive is EV charger installation to an operating parking lot?
For retrofit installations on existing lots, the most disruptive phase is conduit trenching, which requires saw-cutting pavement, excavating, and restoring the surface. The extent of disruption depends on how far charger locations are from the electrical panel and how many runs are needed. Phased installation — activating a portion of the lot at a time — can keep most of the lot operational throughout the project. Installing spare conduits during the initial phase eliminates the need to re-cut the lot for future additions.
Does my existing parking lot need to be repaved to install EV chargers?
Not necessarily. Conduit trenches are saw-cut and restored in place, and concrete pads are poured in the specific charger stall locations. Full repaving is only required if the existing pavement condition is too deteriorated to support the trench restoration properly, or if broader pavement improvements are already planned and it makes sense to combine the scopes. A site assessment will determine what level of pavement work the installation requires.
What type of EV charger is best for a commercial parking lot?
Most commercial parking lots use Level 2 chargers (208/240V), which provide 10 to 20 miles of range per hour and are appropriate for vehicles parked for two hours or more. DC fast chargers (Level 3) deliver significantly more power and are suited for high-turnover locations or fleet applications, but they require substantially more electrical infrastructure. The right choice depends on your customer or tenant dwell time, available electrical capacity, and budget for both the equipment and the civil infrastructure to support it.
