Can you install an EV charger in a Thai condominium?
Yes, but not on your own authority. It has to go through the juristic person, because the car park is common property. Even though you hold the right to use that bay, fixing permanent equipment to a wall or column still alters common property, and that needs a resolution of the co-owners rather than a notification.
In practice, though, what stops these requests is rarely the resolution. It is the building's transformer.
The real wall is the building's spare capacity
A condominium built ten years ago sized its transformer for residential load plus common areas, lifts and pumps. Nobody allowed for thirty cars charging simultaneously at eight in the evening, which is the same hour every unit switches on the air conditioning.
A typical home charger draws around 7 kW. Ten of them running together is 70 kW on top of the existing load. In a building with little headroom left, that is the difference between a system that works and a main breaker that trips.
So the first question to put to the juristic person is not "may I install one", it is "how much spare capacity does the building have, and has anyone done a load study". If the answer is that nobody has, that is the first piece of work that needs to happen, and it is usually why the juristic person never gives you an answer, rather than any unwillingness.
Buildings that solve this mostly solve it the same way: a load management system that automatically reduces the charging rate across all the chargers when the building's total load approaches its ceiling, instead of letting anyone draw full rated power at once. That allows several chargers on the same supply, and it is a much easier proposition for a committee than upgrading the whole transformer.
Why you cannot run a cable down from your own unit
This is most people's first idea, because it appears to sidestep everything: your own meter, your own bill, nobody else involved.
The problem is that a cable routed through the building's risers, through walls and across common areas to reach the car park is, however neatly it is done, use of common property for the benefit of one unit. The juristic person can refuse that, and almost always does.
More seriously, there is safety and insurance. A cable run without design, without correct residual current protection, and absent from the building's electrical drawings is exactly what an insurer will point at if something happens. The building's policy covers the system as designed; it does not cover what one owner added.
What to put in front of the committee
The requests that get refused fastest are the vague ones asking permission to install a charger. A complete submission usually gets an answer, and even "not yet" is better than silence.
- An electrical design showing the connection point, cable sizing and protective devices, prepared by someone licensed.
- The load it will draw and how it will avoid affecting the building total, such as a current limit or restricted charging hours.
- How the energy is metered and who pays, which should be your own sub-meter rather than an estimate averaged into the common charge.
- Who is liable for damage, with the installer's third party liability cover.
- What happens when you move out: removal or handover to the building.
That last point is what gets many applications approved, because it answers the committee's real fear, which is a building filling up with equipment belonging to people who have left.
The parts that matter besides the charger itself
Two things get overlooked, and both are what a competent installer asks about first.
The first is residual current protection capable of detecting DC fault current, because EV charging can produce a leakage current that ordinary household RCDs do not see. Some chargers have that detection built in and some do not and need a separate device. Ask the installer directly which the proposed model is.
The second is a dedicated circuit. A car charger needs its own way from the board, with a breaker and cable sized for hours of continuous load, not a spur off an existing circuit. And never a domestic socket. Ordinary plugs and outlets are not designed to deliver high current continuously overnight, and the part that overheats is the contact, not the cable.
If the answer is no
If the reason is genuinely insufficient capacity, that is a fact rather than an obstruction, at least in the short term. What works is finding the other EV owners in the building and putting it forward as a building project with load management, which is something that can reach a general meeting. A single unit's request cannot.
Meanwhile, public charging remains workable for anyone who does not drive far daily. And if you are about to buy a car, put this into the decision before you buy rather than after.
If you are looking for somewhere new to live and you drive an EV, ask about this at the viewing. The two useful questions are how many owners have already installed, and whether the building has load management. Those answers tell you immediately whether you would be the first to have to pioneer it or the eleventh simply joining a queue.
The chargers themselves, sizing and installation in a house where common property is not an issue, are covered in installing an EV charger at home. Choosing a time-of-use tariff, which changes the cost of charging significantly, is in smart meters and the time-of-use decision. And if your problem is that the juristic person simply will not engage on common property at all, the escalation route is in what a co-owner can do about common property.
If you are looking for a new place, see condominiums to let and condominiums to let in Bangkok.
Frequently asked questions
The bay is mine, so why do I need permission?
Because what you hold is a right to use the bay, not ownership of the space. The car park, walls, columns and electrical system are common property, so fixing permanent equipment to them alters common property and requires a resolution.
Can I use a normal socket in the meantime?
Strongly not advised. Ordinary plugs and outlets are not designed for high continuous current over many hours, the contact is what overheats, and it is an installation outside the building's electrical design, which affects insurance too.
How should the electricity be billed to avoid a dispute?
Fit a sub-meter for your charger and pay for the units you actually use. Estimating and averaging it into the common charge is the origin of almost every later argument.
The building says there is not enough capacity. Is that true or an excuse?
It can be checked. Ask to see the building's load study. If none exists, offer to have the EV owners fund an engineer to produce one, together with a load management proposal. That changes the conversation from asking permission to solving the building's problem.
In short
- It can be done, but it needs a co-owners' resolution, because the car park is common property.
- The real obstacle is usually the building's spare electrical capacity, not the rules.
- Do not run a cable down from your own unit. It misuses common property and affects the building's insurance.
- Submit an electrical design, a load limiting method, a sub-meter arrangement and what happens when you move out.
- If it is refused, group with the other EV owners and propose it as a building project with load management.