How to choose an electrician in Luxembourg

Every firm offering electrical services in Luxembourg must hold an autorisation d'établissement issued by the Ministry of Economy after the Chambre des Métiers has checked qualification and integrity. The number is public and searchable on cdm.lu under 'Rechercher une autorisation d'établissement' and on guichet.public.lu. The tool returns the trading entity, the address and the authorised activity. Ask the electrician for the number, check it, and read the authorised activity line: it must cover électricien or installations électriques, not only renewable-energy equipment or only telecommunications. A firm whose entry covers only photovoltaïque is not a legal operator for a full rewire, however credible the quote looks. The check takes less than two minutes and filters more problem providers than any other single verification. An electrician who answers with a personal name and no trading entity, or who cannot produce the number on request, is not a candidate — the autorisation attaches to the company, and an individual operating without a covering authorisation is trading outside the law. On the cdm.lu entry itself, note the date of issue: a recently reissued authorisation is not itself a warning, but it is worth cross-checking against the insurance certificates, because insurance cover sometimes lags a business reorganisation by several months.

Electrician sits on liste A of the Luxembourg artisanat. That means the firm's technical manager must hold a Brevet de Maîtrise or a qualification recognised as equivalent by the Ministry of Economy — a DAP alone qualifies a salaried employee but not a company dirigeant. Ask the technical manager's name on the quote and confirm it matches the name cited in the cdm.lu entry. For medium-voltage or industrial work, the firm should also appear on the OAI register of qualified electrical installers; the OAI listing is the easiest way to cross-check that the firm has filed test reports on prior commissionings rather than simply paid its registration. Recognised foreign qualifications pass through a Chambre des Métiers validation procedure — the document the electrician produces should be the Luxembourg recognition letter, not the original foreign diploma. A quote from a firm whose technical manager's credential lives only on the personal CV of the owner, with no Luxembourg recognition letter attached, will fail inspection the first time an insurer asks. On a standard residential rewire this is academic until something goes wrong; on a three-phase heat-pump or EV circuit it is the document the assessor reaches for first. On listed buildings and on commercial fit-outs, the OAI entry also tells you whether the firm has been through the coordination-with-architect process at least once, which matters when the job requires sign-off by a separate bureau d'études.

Any new installation, any circuit extension that touches the meter boundary and any panel replacement has to end with an attestation de conformité signed off by the installer and filed with Creos before the network operator releases the supply. Without that attestation Creos will not energise the line; without an energised line a new build does not receive its occupancy permit and a rewire does not come back under power. Ask the electrician two questions at the quote stage: which test sequence will be run (insulation resistance, earth continuity, RCD trip time, phase sequence on three-phase installations), and what is the typical Creos lead time in your commune this quarter. Two to four weeks is normal in the capital and the Alzette belt; six to eight weeks is not unusual in the Oesling during spring renovation peaks. A quote that promises mise en service within a week of cable-pulling is either overselling or skipping the Creos filing. The attestation itself is the record of the work if your insurer or — on a subsidised job — the Klima-Agence asks for it. Keep the original, scan a PDF, file both with the building dossier. A job that ends without a written test report and a Creos-filed attestation leaves no record of what was tested, and a later renovation will have to redo the measurements.

Keep two things apart: the contractor's legal liability and the insurance behind it. Under Civil Code articles 1792 and 2270, contractors are liable by law for 10 years for defects in structural work (gros ouvrages) and for 2 years for minor works (menus ouvrages), counted from acceptance of the works. Unlike France, Luxembourg has no general compulsory décennale insurance for contractors; only architects and consulting engineers must insure their professional liability. So ask the electrician which policies the firm holds. RC Pro — responsabilité civile professionnelle — covers damage caused during the works: a blown appliance on a test shot, a cable nicked into a water pipe, a tile dropped on an oak floor. A voluntary décennale policy backs the ten-year liability. Ask for the certificates, attached to the quote, naming the project scope and the dates of cover. Read the activities covered: a certificate that names only dépannage électrique and not installation électrique will not answer a claim on a new circuit. Read the expiry date: a certificate whose cover lapses mid-project is worth nothing to you. Read the insurer: a name you do not recognise is not automatically a red flag, but a broker-issued certificate from a non-Luxembourg insurer is worth a call to confirm that a claim filed from a Luxembourg court will be honoured. Never accept a verbal reassurance or a certificate from last year. If the firm holds no décennale policy, the legal liability still applies, but a future claim depends on the firm still trading; weigh that against the price.

The Klimabonus 2026 envelope — the grant stack covering EV chargers, photovoltaic arrays and the electrical lot that feeds a heat pump — pays out only when the installer appears on the Klima-Agence registry of partenaires agréés. The registry is public and maintained at klima-agence.lu. An electrician with a valid autorisation d'établissement is a legal operator for the work itself, but the grant money does not flow to a non-registered installer, and the claim is refused flat whatever the quality of the invoice. Three practical consequences follow. First, ask for Klima-Agence registration at the quote stage, not after; an installer who is not registered can still take the job, but you then forfeit the subsidy. Second, file the agreement-in-principle on climate.public.lu or klima-agence.lu before the installer starts; retroactive applications are refused without appeal. Third, keep the Klima-Agence registration number on the final invoice — the claim file requires it. On an EV charger the grant runs up to €750 for a standard wallbox and up to €1,200 for a smart OCPP 1.6 charger; Luxembourg-Ville residents add 50 percent of the state grant on top. On a photovoltaic array the envelope moves into four figures very quickly. On a heat-pump electrical lot the subsidy passes through the heat-pump file rather than the electrical one, but the registry still applies. Losing the grant because the electrician was cheaper and unregistered is the single most expensive shortcut on a Luxembourg energy project.

A compliant Luxembourg electrical devis separates labour hours at a stated hourly rate, materials listed by brand and reference with trade part numbers, the call-out or travel line, the applicable VAT rate (3 percent TVA-logement or 17 percent standard), and the autorisation d'établissement number. The scope line should reference the grid operators' TAB-BT technical rules and the applicable standards — if it does not, ask why, because an electrician working without a stated normative reference is one whose conformity test cannot be audited. Compare the labour rate across at least three quotes: €80 to €130 per hour is the 2026 independent band, €105 to €160 is the dealer-network band; a rate outside those ranges is worth a question. Materials markup typically sits at 20 to 35 percent above trade; above 40 percent the firm is subsidising a low labour rate, which is legal but worth naming because the craft usually tracks the labour rate, not the retail price of the fixture. A lump-sum quote without the breakdown does not comply with national consumer-protection rules above €2,500 and makes apples-to-apples comparison impossible. Ask for the RCD class on each circuit — type AC, type A or type B — and check that the EV and heat-pump circuits carry type B, not type A; a quote that does not specify RCD class by circuit is a quote written by someone planning to decide on site, which is where most conformity failures are born.

A sane payment schedule on a Luxembourg electrical project tracks the physical milestones of the work: 30 percent acompte at quote signature, 40 percent at installation complete and first pressure/insulation tests passed, 20 percent on filing of the attestation de conformité with Creos, and 10 percent retention released on mise en service and snag-list closure. On smaller jobs under €1,500 a single invoice on completion is normal and a deposit is rarely warranted. An electrician who asks for 50 percent at signature on a residential job is either under-capitalised, pricing your default risk into the deposit or using your money to pay down a previous job's unpaid balance — none of those is an acceptable reason. An electrician who demands 100 percent up front is never legitimate on a residential project. The final 10 percent retention is the single biggest lever you retain if the test sequence is disputed or the snag list is contested; release it only after the Creos attestation is filed, the mise en service is witnessed and the written test report is in your hand. Put the schedule on paper, with a countersignature. Oral retention agreements disappear with the phone call that made them. On projects that span a Creos appointment in the critical path, write the Creos-filing milestone explicitly into the payment step, because that date is outside the electrician's direct control and you do not want to pay against a milestone the network operator has not confirmed.

Six flags recur on every problem electrical file in Luxembourg. One: no autorisation d'établissement number produced on request, or a number whose cdm.lu entry does not cover installation électrique. Two: no written devis, only a verbal price, or a lump-sum quote with no labour-versus-materials breakdown and no VAT rate stated. Three: no clear answer on insurance — a refusal to say whether the firm holds RC Pro or décennale cover and to show the certificates, or a promise that they are 'being renewed' and will come 'after the work starts'. Four: a request for cash payment or payment to a personal bank account rather than a business account — legitimate electricians in Luxembourg invoice through a company account and declare VAT. Five: a firm registered abroad with no Luxembourg autorisation, sometimes offering a 30 to 40 percent discount on the Luxembourg market; the saving evaporates the first time a claim is filed against a trading entity whose Luxembourg jurisdiction is unclear. Six: on a subsidised project, no Klima-Agence registration on the quote, or a vague promise that registration 'will be confirmed before the invoice'. Any single flag is recoverable with a conversation and a revised quote; two or more in combination is not. Walk away and request another provider. Luxembourg has enough legitimate electricians — ITM inspections, CCSS declarations and AED VAT filings leave a public trail that separates the legal from the informal — that the cost of abandoning a questionable quote is always lower than the cost of engaging one.