OIBT inspection in Lachen
Received an inspection notice from EW Lachen AG for a building in Lachen (Schwyz)? OIBT pro calculates your price online, books an ESTI-licensed inspector and sends the safety report to your grid operator.
Grid operator in Lachen
According to ElCom, the municipality's electricity grid is operated by EW Lachen AG, which sends the periodic inspection notice and receives the safety report.
The building stock of Lachen
Lachen has 9'529 inhabitants (FSO, 2024). The federal census counts 1'099 residential buildings there: 559 single-family houses and 306 multi-family buildings. 73 % were built before 1981 and 298 before 1946: these installations have already been through at least one 20-year periodic inspection cycle, and the grid operator's next notice comes due regularly.
| Single-family houses | 559 |
| Multi-family buildings | 306 |
| Mixed-use buildings | 234 |
| Share built before 1981 | 73 % |
Sources: FSO, population statistics (STATPOP) and federal building census (structure by construction period).
Prices for the canton of Schwyz (+5 % compared with the national grid).
Frequently asked questions
Who sends the inspection notice in Lachen?
In Lachen, the periodic inspection notice is sent by EW Lachen AG. It states the reference, the installation and the deadline. Photograph the letter in the assistant: we read these details automatically.
How soon can an inspection take place in Lachen?
Our inspectors cover Lachen and the whole canton of Schwyz. You pick a slot online, usually within 2 to 3 weeks; “optimal” slots (inspector already in the area) are cheaper.
Which buildings in Lachen are subject to periodic inspection?
Every building connected to the grid: in Lachen, the federal census counts 1099 residential buildings (559 houses, 306 multi-family buildings), 73 % of them built before 1981. A dwelling is inspected every 20 years, business premises every 10 years (5 years for high-risk premises).
What is a periodic OIBT inspection?
The Swiss Low-Voltage Installations Ordinance (OIBT/NIV) requires owners to have their electrical installations inspected at regular intervals (20 years for housing, 10 or 5 years for commercial premises). The grid operator sends a notice; you appoint an independent inspection body which issues the safety certificate.
OIBT inspection pricing
| Detached house | CHF 470incl. VAT |
| Apartment | CHF 300incl. VAT |
| Apartment building | CHF 1389incl. VAT |
| Shop, office, restaurant, workshop | CHF 478incl. VAT |
| Farm | CHF 984incl. VAT |
| Industry, crafts, healthcare | CHF 984incl. VAT |