EV Charging for Strata & Apartment Buildings in Sydney

As EV ownership grows across Sydney, apartment and strata buildings face a practical challenge: how do you provide EV charging without overloading the building’s electrical infrastructure or creating a complicated system for residents?

The answer isn’t always to install the fastest charger available.

For buildings where residents park overnight, 7kW or 22kW AC charging can be an efficient and cost-effective solution. For buildings with high parking turnover, visitor parking or users who need faster charging, DC fast charging may make more sense.

For larger developments, a hybrid EV charging system combining AC and DC charging can provide the best balance of convenience, capacity and cost.

The right solution depends on your building’s electrical capacity, parking layout, charging demand, budget and plans for future EV adoption.

AC, DC or Hybrid: Which Is Right for Your Building?

There is no single EV charging solution that works for every apartment building.

	AC Charging	DC Fast Charging	Hybrid
Typical power	7–22kW	25–180kW+	Combination
Best for	Overnight resident charging	Fast shared charging	Mixed requirements
Typical location	Resident parking bays	Visitor/common-use bays	Both
Charging speed	Several hours	Much faster	Varies
Infrastructure cost	Generally lower	Generally higher	Depends on design
Best suited to	Long parking periods	High turnover	Larger/mixed-use buildings

AC charging is often the best starting point where residents leave their vehicles parked for several hours or overnight.

DC fast charging can be valuable where charging bays need to serve multiple vehicles throughout the day.

Hybrid charging combines the two, allowing resident vehicles to use AC charging while shared or visitor bays provide faster DC charging.

The objective isn’t to install the most powerful charger.

It’s to design the charging infrastructure around how the building actually uses its car park.

What Is EV Charging for a Strata Building?

An apartment EV charging project involves much more than installing chargers.

Depending on the building, the infrastructure may include:

EV chargers at resident or shared parking spaces
Electrical distribution boards
Cabling and cable containment
Circuit protection and switchgear
Dynamic load management
Energy metering
User access and authentication
Charging management software
OCPP communications
Civil works and protective bollards
Testing and commissioning
Compliance documentation

The NSW Government recommends that strata buildings consider EV charging as part of a broader building strategy, including electrical capacity, expected demand, charging infrastructure, costs, approvals and future expansion.

This is why the best projects start with a site and electrical assessment, rather than simply choosing a charger.

When Does DC Fast Charging Make Sense?

DC fast charging can be a strong option when vehicles need to charge quickly or when the same charging bays need to serve multiple users.

High-turnover parking

If vehicles regularly arrive and leave throughout the day, faster charging can allow a shared charging bay to serve more users.

This is very different from a resident who parks overnight.

Visitor parking

DC chargers can provide a convenient charging option in shared or visitor parking without requiring a dedicated charger for every apartment.

Access can be managed using apps, RFID or payment systems, depending on the installation.

Mixed-use developments

Apartment buildings containing retail, offices or other commercial uses often have different parking patterns.

A combination of resident AC charging and shared DC charging can accommodate these different requirements.

Larger apartment buildings

A large building may have hundreds of parking spaces but limited electrical capacity.

Installing a high-powered charger at every bay isn’t necessarily the most efficient approach.

A combination of managed AC charging, shared DC charging and load management may provide greater charging availability from the building’s existing electrical capacity.

When Is AC Charging Better?

DC isn’t automatically better simply because it is faster.

AC charging is often the more practical choice when:

Residents mainly park overnight
Vehicles remain parked for several hours
Residents want charging at their own parking bays
Charging demand is relatively low
The building has limited electrical capacity
The additional infrastructure cost of DC cannot be justified

For overnight parking, a 7kW AC charger can deliver a substantial amount of energy over several hours without requiring the infrastructure associated with high-powered DC charging.

For many residential buildings, managed AC charging will therefore provide better value than installing DC chargers everywhere.

What About a Hybrid EV Charging System?

For larger Sydney apartment buildings, a hybrid system can provide the best of both approaches.

For example:

Resident bays: 7kW–22kW AC chargers
Visitor/common-use bays: DC fast chargers
Building supply: Dynamic load management

This allows residents with long parking periods to charge economically while providing faster charging for visitors and users who need to charge and leave.

It also provides flexibility as EV ownership increases.

Instead of trying to predict exactly how many EVs a building will have in five or ten years, the infrastructure can be designed so charging capacity can be expanded progressively.

Can an Apartment Building Support Multiple EV Chargers?

This is one of the first questions that should be answered before installation.

A building’s electrical supply already supports loads such as:

Apartments
Air conditioning
Hot water
Lifts
Lighting
Pumps
Ventilation
Pools
Commercial tenancies
Other building services

Adding multiple EV chargers increases electrical demand.

However, that doesn’t automatically mean the building needs a major electrical upgrade.

Dynamic load management

A load management system can monitor overall building demand and control how much power is available to EV chargers.

When building demand is high, EV charging can be reduced.

When additional capacity becomes available, charging power can increase.

This can allow more chargers to operate without every charger drawing its maximum rated power simultaneously.

The NSW Government recommends assessing existing electrical demand, historical peak demand and available capacity when planning EV charging infrastructure for strata buildings.

How Many EV Chargers Does a Strata Building Need?

There isn’t a universal number.

The right charging capacity depends on:

Number of apartments
Number of parking spaces
Current EV ownership
Expected EV growth
Resident charging behaviour
Parking duration
Visitor demand
Available electrical capacity
Charger power
Load management
Future expansion requirements

For some buildings, a small number of chargers may be sufficient initially.

For larger buildings, it may make more sense to install the underlying electrical infrastructure first and add chargers progressively.

This is sometimes referred to as an EV charging backbone.

The NSW Government identifies modular and whole-of-building infrastructure as approaches that can help apartment buildings accommodate future EV charging demand.

How Does EV Charging Billing Work in Strata?

Billing is an important part of apartment EV charging because electricity needs to be allocated fairly between users.

Depending on the building, charging can use:

Individual metering
Sub-metering
RFID access
Mobile applications
Pay-per-use charging
Charging management platforms
Outsourced billing services

A shared charger, for example, can record who used the charger and how much energy was consumed during the charging session.

This allows charging costs to be allocated to users rather than automatically becoming a common-property expense.

The appropriate billing model depends on the building’s electrical configuration, ownership structure and how the charging infrastructure is operated.

What Does EV Charging Cost for a Strata Building?

There is no standard installation price because every building is different.

The main factors affecting project cost include:

Number of chargers
AC or DC charger type
Charger power
Existing electrical capacity
Switchboard requirements
Cable distance
Cable size and containment
Load management
Metering
Communications
Billing software
Civil works
Trenching
Protective bollards
Testing and commissioning
Any required electrical supply upgrades

A charger located close to an existing distribution board with spare capacity can be considerably simpler to install than a DC charger requiring a long high-capacity cable route through a basement car park.

For this reason, an accurate quote requires a site assessment.

The cheapest charger isn’t necessarily the cheapest overall solution if the system is difficult to expand, requires repeated electrical work or creates ongoing administration problems.

EV Charging in Sydney Apartment Car Parks

Many Sydney apartment buildings have underground car parks, which can create additional installation considerations.

Before installation, the project should assess:

Main switchboard location
Available electrical capacity
Distribution boards
Cable routes
Basement access
Ceiling and wall penetrations
Fire-stopping requirements
Vehicle clearance
Charger positioning
Communications
Future expansion

The most convenient location for a charger isn’t always the most efficient location electrically.

A proper site assessment can identify these issues before equipment is selected and installed.

Smart EV Charging Management for Strata Buildings

A strata EV charging system needs more than hardware. Building managers need to know which chargers are available, how much electricity is being used, who is using the system and whether chargers are operating correctly.

OCPP (Open Charge Point Protocol) allows compatible chargers to communicate with charging management platforms.

Depending on the system, this can provide:

Charger availability
Charging session data
Energy consumption
User information
Fault monitoring
Remote diagnostics
Billing information
Charging history

Smart charging management can also coordinate multiple chargers and control how available electrical capacity is distributed.

For a large strata building, this can turn a collection of individual chargers into a properly managed EV charging network.

Future-Proofing Your Apartment Building

One of the biggest mistakes a building can make is planning only for today’s EV demand.

You may have five EVs today and fifty in several years.

Future-proofing doesn’t necessarily mean installing fifty chargers immediately.

Instead, the building can establish the infrastructure needed to expand charging progressively.

A staged approach could look like:

Assess demand and electrical capacity
Install EV distribution infrastructure
Install initial AC and/or DC chargers
Implement load management and billing
Add charging points as demand increases

This can reduce the risk of repeatedly modifying the building’s electrical infrastructure as EV ownership grows.

How Does the Strata EV Charging Installation Process Work?

A typical project involves:

1. Site assessment

The car park, switchboards, electrical infrastructure and potential charger locations are assessed.

2. Electrical assessment

Existing demand and available capacity are reviewed.

3. Charging strategy

The appropriate combination of AC, DC, hybrid, shared or dedicated charging is determined.

4. System design

Electrical infrastructure, load management, metering, communications and charging management are designed.

5. Strata approval

The proposed solution, costs, operating model and responsibilities can be presented to the relevant stakeholders.

6. Installation

Electrical, communications and civil works are completed.

7. Testing and commissioning

The charging equipment and associated infrastructure are tested and configured.

8. Ongoing management

Usage, billing, faults and system performance can be monitored and managed.

Is DC Fast Charging Right for Your Strata Building?

The answer depends on how your building’s parking spaces are used.

If residents mainly park overnight: AC charging will often be the better starting point.
If parking has high turnover: DC fast charging may provide greater value.
If the building has resident and visitor charging requirements: a hybrid AC/DC system may be the most flexible option.
If electrical capacity is limited: load management and staged infrastructure should be considered before assuming a major electrical upgrade is required.

The goal is not to install the fastest charger.

The goal is to build an EV charging system that works for your building today and can grow with it tomorrow.

Planning EV Charging for Your Sydney Strata Building?

Sydney EV Chargers works with strata committees, owners corporations, building managers and property developers to plan and install EV charging infrastructure for apartment and mixed-use buildings across Sydney.

We can assess your building’s:

Electrical capacity
Car park layout
Charging demand
Resident and visitor requirements
AC/DC charging options
Load management requirements
Metering and billing needs
Future expansion requirements

From there, we can recommend a practical AC, DC or hybrid EV charging strategy for the building.

Call 1300 905 641 or contact Sydney EV Chargers to arrange a strata EV charging assessment.

The right place to start isn’t with a charger. It’s with the building.

EV Charging for Strata & Apartment Buildings in Sydney: DC Fast Charging Guide