Business liability
Pays for damage to underground lines, subsidence and traffic accidents, including consequential financial losses and environmental risks if these are expressly included.
Insurance broker / Business types / Construction and trades
Insurance for civil engineering, road building and utility works in Germany
In civil engineering the biggest risk lies where nobody looks: below the surface. A fibre optic cable, a gas pipe, an unknown sewer, and an ordinary working day turns into a claim that shuts down a whole district. This page explains what your firm needs and what it costs.
The question almost everyone asks first
Who pays if we hit a power cable while digging and an industrial estate loses power?
Your public liability policy pays to repair the cable, if damage to underground lines is included. For the lost production of the businesses without power, you need consequential financial losses from line damage included, with a sufficiently high limit. It is also crucial that you obtained the utility plans and documented your enquiries; otherwise the insurer can reduce payment for gross negligence.
What goes wrong in this trade
- 01
Lines in the ground
Gas, power, water and fibre often lie differently from the plans. A strike means repair, emergency call-outs and claims for the outage.
- 02
Subsidence and groundwater
Lowering the groundwater and open trenches make neighbouring buildings and roads settle. Cracks and damage often only show later.
- 03
Traffic safety
Poorly secured excavations and barriers lead to accidents involving cyclists, pedestrians and cars.
- 04
Machinery theft
Mini excavators, plate compactors and lasers are stolen from sites in a targeted way, often to order.
- 05
Trench collapse
Collapsing trench walls are among the deadliest accidents in construction.
- 06
Environment and water
Leaking hydraulic oil or diesel contaminates soil and waters; the authority orders the cleanup.
Compared with other trades, 1 low to 5 high.
The insurance you need
Essential
Machinery breakdown
Excavators, rollers and pavers are the firm's capital and need cover against breakage, overturning, flooding and theft.
Strongly advised
Fleet insurance
Tippers, low loaders and vans under one fleet policy save effort and premium.
Contractors all risks
Contract works insurance protects sewers, pipes and road construction until handover against flooding, collapse and vandalism.
Business interruption
Pays for hired equipment and lost income when a key machine stands still after a loss.
Depends on the business
Group accident insurance
Extra lump sum for employees after serious accidents.
Business legal expenses
Business legal expenses cover for disputes with network operators about line damage and with clients about variations.
What it costs: example prices
For insurers, civil engineering is a high risk, mainly because of damage to underground lines. Premiums rise steeply with turnover and differ many times over between providers.
| Insurance | Example | Typical range |
|---|---|---|
| Business liability | €50,000 turnover, €3 to €5 million cover, €250 excess | about €660 to €1,500 a year |
| Business liability | €200,000 turnover, €3 to €5 million cover | about €970 to €1,800 a year |
| Business liability | €1 million turnover, €3 to €5 million cover | about €2,600 to €9,700 a year |
| Machinery breakdown | Mini excavator, wheel loader and plate compactors worth €150,000 | about €1,500 to €3,500 a year |
For comparison: Liability insurance for a small civil engineering firm costs roughly as much per year as two days of a mini excavator with operator.
Guide prices excluding German insurance premium tax, as of September 2026. Liability comes from published tariff comparisons; machinery is a guide value from our quoting practice. Higher limits for consequential financial losses from line damage increase the premium. We obtain the exact quote for you.
Sources of the price examples
Our suggestions: three packages
01
Start
For: small firm with a mini excavator, house connections and garden groundworks
- Business liability
- Machinery breakdown
Together about €1,500 to €3,500 a year
Request this package02
Civil engineering firm
For: five to twenty employees, sewer and utility works
- Business liability
- Machinery breakdown
- Fleet insurance
- Contractors all risks
- Business interruption
Together about €6,000 to €18,000 a year excluding the fleet
Request this package03
All round
For: road building for public clients with a large machinery fleet
- Business liability
- Machinery breakdown
- Fleet insurance
- Contractors all risks
- Business interruption
- Group accident insurance
- Business legal expenses
Together about €15,000 to €45,000 a year excluding the fleet
Request this packageThe worst day in the trench
Six claims that really happen in civil engineering and road building, all on a single Thursday. Go through the day and see who pays.
Damage so far€140,500
-
The mini excavator has vanished from the site, along with its digging bucket and quick coupler.
-
While digging for a house connection, a bundle of fibre optic cables is cut. The network operator invoices repair and fault clearance.
-
A cyclist rides into a poorly lit barrier at night and is seriously injured.
-
Heavy rain floods the open sewer trench; the freshly laid pipes float up and have to be laid again.
-
A power cable is hit. A bakery left without power claims one day's lost production.
-
A hydraulic hose bursts and oil runs into the roadside ditch. The authority orders excavation and disposal.
Which package would you have had?
Illustrative amounts before any excess. Whether and how much is paid depends on the policy terms.
Practical tips from your broker
- Damage to underground lines and the consequential financial losses from it must be included, with a limit of at least €500,000 for the consequential losses.
- Obtain the utility plans of all network operators before every excavation and keep the replies; that is often a condition for payment.
- Environmental liability and environmental damage insurance belong in the policy if you work with machines and fuels.
- Insure machines with theft protection and a tracking system; that often lowers the premium.
- Choose €5 to €10 million cover; public clients often prescribe minimum limits.
- Check cover for subsidence and damage from lowering groundwater if you work in built-up areas.
Why NAMMERT for your business
We know the line damage clauses
In civil engineering, sub-limits for line damage and consequential financial losses decide the outcome. We compare these limits across several insurers, not just the premium.
Settling claims means understanding them
In boat insurance we settle claims ourselves, including environmental damage from fuel in the water. We know what evidence an authority and an insurer need.
Fleet and machinery in view
We look after excavators, lorries and liability together, so nothing is insured twice or not at all.
At your side since 1989
As an owner-managed broker we can be reached when the network operator calls. The insurer pays our remuneration.
Questions and answers
Frequently asked
How much does liability insurance cost in civil engineering?
Published tariff comparisons show about €660 to €1,500 a year at €50,000 turnover and about €2,600 to €9,700 at €1 million turnover.
Is damage to underground lines covered automatically?
In civil engineering tariffs usually yes, but often with limits. Consequential financial losses such as third parties' lost production in particular often have low special limits.
What happens if I did not obtain utility information?
Then the insurer can reduce or refuse payment for gross negligence. Obtaining the information is also a duty towards the network operators.
Do I need contract works insurance in civil engineering?
For sewer and utility works it makes a lot of sense. Otherwise nobody pays for flooding, collapsing trench walls or theft of installed parts.
Is my excavator insured against theft?
Only with machinery insurance that includes theft. Many insurers require an immobiliser or tracking for that.
Who pays for traffic accidents at my site?
If the site was not properly secured, your firm is liable and public liability pays. Document signs and lighting every day.
NAMMERT insurance broker
Request quotes for Civil engineering
The recommended covers are already ticked. Change what does not fit; we obtain quotes and come back with a comparison. You can write in English.
Thank you, we have your request.
We will be in touch within one working day. If it is urgent: +49 3375 29 12 77.
Related trades
Will my liability policy pay if the neighbour's gable wall cracks during demolition?
Who pays if the house next door cracks while we dig the foundation pit?
Who pays if a stone thrown up while mowing smashes a car window?
Official classification
This page covers the following classes of the German WZ 2025 (identical to NACE at four digits):
- 42.11 Bau von Straßen
- 42.12 Bau von Bahnverkehrsstrecken
- 42.13 Brücken- und Tunnelbau
- 42.21 Rohrleitungstiefbau, Brunnenbau und Kläranlagenbau
- 42.22 Bau von Versorgungseinrichtungen für Elektrizität und Telekommunikation
- 42.91 Wasserbau
- 42.99 Sonstiger Tiefbau a. n. g.
Source: Federal Statistical Office of Germany (Destatis), WZ 2025. All business types
Boat or yacht? Here we are not the broker but the underwriting agency, with our own policies and our own claims handling.
Boat insuranceNAMMERT Assekuradeur GmbH, insurance broker licensed under section 34d(1) of the German Trade Regulation Act, broker register no. D-C08Q-TOSD4-37. For boat and yacht insurance we act as underwriting agency, not as broker. Statutory disclosure (German) · Updated