In an apartment building, the wallbox is less a technical matter than an organisational one: the garage and the grid connection belong to everyone, so the solution needs a joint decision. What has proven its worth is a basic installation for all parking spaces with load management and billing per user – individual stand-alone solutions «one after another», by contrast, reliably end in a dead end, because the grid connection sets the limit. (As of: November 2026)
Key points in brief
- The garage and the house electrics are communal areas – in condominium ownership, the meeting has a say in the decision, not the individual party.
- The house connection is the physical limit: several unregulated wallboxes quickly overwhelm it – load management is practically mandatory in the apartment building.
- The basic installation (supply line and piping to all spaces) is the key: planned once, the system grows box by box.
- Every charging point needs a clean billing – a flat rate «via the general electricity» is not a long-term solution.
- Putting it on the agenda early pays off: the best time for the decision of principle is before the third electric car is in the estate.
Before buying a car: clarify your charging situation
When is your car parked at home during the day? This determines how well the wallbox and the solar system work together.
- Mostly at home: With your own solar system, the car charges directly with the surplus from the roof. According to SwissEnergy, intelligent control makes up to 90% solar power possible, even without intermediate storage.
- Mostly away: Then the car is not at the house during the sunny hours. A battery storage system can shift solar power from the day into the evening; whether that pays off is a calculation of its own. Storing grid electricity, on the other hand, brings no price advantage under a tariff that does not distinguish between day and night (the EKZ standard tariff 2027, for example, only has quarterly prices). Your grid operator’s tariff sheet shows what applies to you.
Also clarify in advance:
- Apartment building and condominium ownership: The underground garage and the grid connection belong to everyone. Clarify early whether a resolution of the owners’ meeting is needed and how the basic installation is planned.
- Grid connection and registration: Have the reserve at the connection checked and register the wallbox with the grid operator.
- Subsidies: They differ by canton and municipality; the overview is in the guide Subsidies for wallboxes.
- Feeding back into the home (V2H): Not every car and every wallbox can do this. Vehicle, wallbox and grid operator must be clarified case by case, and bidirectional charging stations must be registered. More under V2H in Switzerland.
Sources: SwissEnergy (charging an electric car with power from your own roof); Energiepraxis-Seminare Ostschweiz (OST, Canton of Zurich), bidirectional charging; EKZ, electricity tariffs 2027.
Why is the apartment building the special case?
Because three things are shared that belong to one person alone in a single-family home: the parking area, the house electrics and the decision-making power. Technically, a wallbox in the apartment building is no different than in the single-family home – organisationally, however, every single box is connected to the joint house connection and mostly to communal components such as garage walls and riser zones.
Exactly from this arises the classic conflict pattern: the first party installs for itself, the second one too, for the third the electrician registers concerns about the connection – and from then on, individual solutions block each other. Whoever came first was lucky; whoever comes later pays for the conversion. This pattern can be avoided if the decision of principle is made before the third box instead of after it.
Who decides – and how does that work in condominium ownership (STWEG)?
In condominium ownership, the path leads via the meeting: wallbox installations touch communal parts, so the topic belongs as an agenda item on the invitation, neatly prepared with variants and costs. Which majority is necessary for which resolution depends on the specific design and the regulations – this is clarified by the management or a specialist; this guide does not replace legal advice. In the rental property, the ownership decides; how tenants proceed is covered in a separate article.
The practical advice for the meeting: do not let them vote on the individual box, but on the concept. A resolution of principle – basic installation for everyone, whoever charges pays for their box and their electricity – takes the edge off the topic because nobody pays for the neighbour's car and nobody has a worse hand later.
Why is the basic installation the key?
Because it builds the most expensive element – the path from the meter room to the parking spaces – only once. The basic installation typically includes the supply line from the house distribution board, the piping along all spaces and the preparation for the load management. After that, every single wallbox is a small, predictable step: mount the box, register it, charge.
| Island solutions «one after the other» | Basic installation + expansion as required | |
|---|---|---|
| Initial costs | low for the first one | higher, but shared |
| Costs per additional box | increasing, partly dismantling necessary | consistently low |
| House connection | becomes a point of contention | managed from the beginning |
| Fairness | first come, first served advantage | equal conditions for everyone |
| Future | Dead end from the third box onwards | grows with e-mobility |
Classification, as of: July 2026. Costs and distribution depend on the garage, distances and electrics – the quote after the site visit is binding.
Retrofitting a wallbox in an apartment building: what matters in an existing underground garage
In new buildings, the charging infrastructure is planned in from the start; in existing buildings it has to work with what is already there. Whether the retrofit is simple or complex is usually decided by five points. They belong in the site visit, before a quote becomes binding:
| Item | What is checked | Why it matters |
|---|---|---|
| House connection | Connection capacity, current peak load, reserve in the main distribution board | determines how many boxes can charge at the same time – and whether load management is enough or the connection has to be reinforced |
| Cable route | Distance meter room–parking spaces, risers, routing along ceiling or wall | the route is usually the largest cost item; a shared cable route for all spaces builds it only once |
| Fire compartments | Walls and ceilings that cables have to pass through | every penetration is sealed again for fire protection – this belongs in the quote and the acceptance inspection |
| Communication | Network or mobile reception in the underground garage | Load management and billing need a stable connection; under concrete, reception is often weak, and a data cable is then the reliable solution |
| Allocation | Metering per charging point, allocation of parking space to party | only those who meter per box can bill the electricity fairly – even if parking spaces are later sold or re-let |
These points decide whether the basic installation can be built in one stage or whether the grid connection has to be reinforced first – in which case the utility also has a say. That is why the site visit comes first, not the choice of wallbox.
Incentives: Zurich programme exhausted, Basel-Stadt continues to provide funding
The charging infrastructure incentive programme of the Canton of Zurich has ended: the budget of CHF 50 million was 100 per cent used up in October 2026, and the canton no longer accepts new applications. Applications already submitted continue to be processed; if the money is not enough, they are placed on a waiting list, and there is no legal entitlement. The only measure that continues is «Ladestation im Quartier» – it is aimed at political municipalities, not at property managers or condominium owners.
For planning, this means: in Zurich, the basic installation now has to pay off without a cantonal contribution – this changes nothing about the technical reasons. Load management from several charging points upwards and a concept for the whole underground garage remain the right approach, because the grid connection sets the limit, not a funding regulation. Some cities and municipalities fund charging infrastructure themselves; energiefranken.ch (topic «Mobilität») offers an overview by postcode.
Information according to the Canton of Zurich (AWEL), page on the charging infrastructure programme, retrieved on 12 November 2026.
Basel-Stadt works differently: the canton covers 60 percent of the basic installation, up to a maximum of CHF 1’300 per private charging point – the wallbox itself is not subsidised, and the programme runs until the end of 2030. Conditions and procedure are described in the article Wallbox incentives.
Right to charge: what the Federal Council is planning
On 19 June 2026 the Federal Council sent a draft law out for consultation (deadline 12 October 2026): anyone renting or living in condominium ownership should be able to require the owners to provide the basic installation – a power line to the parking space, a system for allocating electricity consumption and, where applicable, load management –, provided this is reasonable. In tenancies the costs can generally be passed on to the parking-space rent, and disputes are decided by the civil courts. This is a draft, not current law; whether and when it enters into force is open.
For owners’ associations and property managers this creates no obligation to act, but it is a planning argument: the concept recommended here anyway – basic installation for all spaces, load management, metering per user – corresponds to what the draft describes as basic installation. Those who decide on it before individual requests arrive decide on their own timetable rather than on demand. The tenant side is covered in the article Wallbox as a tenant.
The administration has a say in the decision – even if it does not own the car
In practice, almost every charging project in the apartment building runs via the property management: it sets the agenda item, procures the quotes, coordinates the clarifications with the grid operator and ultimately has to bring electricity and ancillary cost processes together. An application that is prepared without them rarely gets through.
What a meeting needs, from experience, in order to be able to decide at all: a technical report on the basic installation, the cost allocation with two financing options, the statement on load management – and the clarification of whether the canton or the municipality will contribute. We put together a proposal ready for a vote; the template for the solar part in condominium ownership is available as the STWEG decision folder.
How do load management and billing work?
Load management is not an option in the apartment building, but a prerequisite: the house connection is the limit, and as soon as several vehicles charge at the same time, a control system must distribute the available power – otherwise the main fuse will eventually do so. How static and dynamic load management work is in its own article; for the meeting, the core message is enough: with load management, everyone charges a little more slowly, but everyone charges reliably – and 11 kW per box is enough in everyday life anyway because cars are parked overnight.
Billing means: every charging point measures its consumption, and every party pays for its electricity. Modern wallboxes bring the measurement with them; depending on the solution, billing runs via the management, a service provider or directly via separate meters. What we advise against: the temporary measure «it just runs via the general electricity» – it is the birth of every subsequent distribution dispute. If the house produces its own solar power, for instance in the self-consumption community (ZEV), the charging current can also be integrated – a planning detail that belongs on the table early.
What does the step-by-step procedure look like?
First: assess demand – who drives electrically today, who is planning to? The answer regularly underestimates the future; it is planned for all spaces, built as needed. Second: have the specialist company check the house connection reserve and the paths – this results in the concept with variants. Third: agenda item with concept, cost division and operating rules (who pays for the box, electricity, maintenance?) in the meeting. Fourth: build the basic installation, have notifications to the utility carried out by the specialist company. Fifth: retrofit boxes individually whenever a vehicle arrives.
For larger properties with many charging points – businesses, large developments – this becomes a separate planning topic with professional operation; see the article Charging infrastructure for businesses.
Our package for property managers and condominium owners
We take care of the charging infrastructure in the underground car park, from the first assessment to the last box, with our own electrical team:
- Site visit: capacity reserve at the building connection, cable routes from the meter room to the parking spaces, condition of the distribution board.
- Charging concept for all spaces: final build-out planned, stages defined, load management dimensioned.
- Draft resolution: technical report, cost allocation with two financing options and operating rules, prepared for the property management and the owners' meeting.
- Incentives: clarification of whether the canton or the municipality will contribute (in Basel-Stadt, for example, the Aktion Ladeinfrastruktur), and the documents for the application before construction starts.
- Basic installation: supply line, conduits, load management, notification to the grid operator, safety certificate.
- Boxes as needed: each party orders its wallbox when the car arrives; metering and billing per charging point.
If the building produces its own solar power or a system is planned, we integrate it straight away. For the solar system itself and the ZEV, see the page Solar systems for apartment buildings and STWEG.
The typical apartment building request does not reach us before the first wallbox, but after the second – when the third party requests and suddenly everyone realises that nobody thought of the big picture. Then the mood is tense and retrofitting is more expensive than necessary. The relaxed projects are those in which a forward-looking management has put the topic on the agenda before it was urgent: one concept, one resolution, and after that, every new box is a routine appointment instead of a meeting debate.
Are you planning in condominium ownership (STWEG)? How owners’ associations pass resolutions on shared systems is explained on our page Solar system in condominium ownership.
Frequently asked questions
Can a single condominium owner simply install a wallbox?
On communal parts, not on their own – the path leads via the meeting. The specific consent requirements depend on the regulations and design; clarify this with the management before quotes are obtained.
What if only one party drives electrically at all?
Even then, a look at the big picture is worthwhile: dimensioning and piping the supply line so that further spaces can follow suit costs little extra in the first project – and saves the community the later dismantling.
Is our house connection sufficient for several wallboxes?
Often yes – with load management, which distributes the power. Whether and how much reserve is available is checked by the specialist company; only then is a reliable statement possible.
How is the charging current billed?
Measured per charging point and charged to the respective party – via the ancillary costs statement, a billing service provider or separate meters. It is important that the measurement is part of the concept from the beginning.
Will the basic installation in apartment buildings soon become mandatory?
Not today. In June 2026 the Federal Council sent a draft out for consultation under which tenants and condominium owners could require the basic installation, provided it is reasonable. The draft is not yet in force; whether and when it will be is open.
Does the installation have to be reported to the utility?
Charging infrastructure is reported to the grid operator via the specialist company; in the case of higher outputs, the utility has a say in the design. The administration belongs in the hands of the installer – have the completed notifications confirmed to you.
Are there still incentive contributions in the Canton of Zurich for a wallbox in an apartment building?
Not from the canton any more: the Zurich programme for charging infrastructure was exhausted in October 2026, and new applications are no longer possible. Some cities and municipalities provide funding themselves – this can be checked by postcode on energiefranken.ch.
Can an existing underground garage be retrofitted without major conversion work?
This depends less on the wallbox than on five points: reserve at the grid connection, cable route, penetrations through fire compartments, network in the garage and metering per charging point. After the site visit it is clear whether the basic installation is possible in one stage or whether the connection has to be reinforced first.
Free initial consultation
Charging concept for the apartment building – before it is urgent.
We check the house connection and paths, calculate variants for the meeting and deliver the concept with which every subsequent box becomes routine. Free of charge and without obligation.
Prefer to talk? +41 78 830 83 35
Wallbox & charging solution for your home →
Swissolar member and Solarprofi · ESTI installation authorisation (Art. 14 NIV) · in Zurich since 2017 · over 150 systems completed · a personal answer from the specialist company, no call centre
Further guides
Load management: how it works
Wallbox basics
Wallbox as a tenant
ZEV in apartment buildingsSources: EnergieSchweiz (charging infrastructure in multi-party buildings), Swiss eMobility, ESTI; Federal Council, press release of 19 June 2026 (consultation on the Energy Act, motion 23.3936); Canton of Zurich (AWEL), page on the charging infrastructure programme (retrieved on 12 November 2026); Canton of Basel-Stadt, «Aktion Ladeinfrastruktur» (page status: 2 October 2026).
Last updated: 12 November 2026 · Author: ecoEn Redaktion
