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When should I take out builder's liability insurance and when does it end?

In short

You should take out builder's liability insurance (Bauherrenhaftpflicht) before the first spade hits the ground, ideally when you buy the plot, and pay the one-off premium at once. When does it end? By itself once the building work is finished, at the latest after the agreed term of usually 2 to 3 years. For a detached house the whole build often costs EUR 75 to 150.

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When should I take out builder's liability insurance and when does it end?

What it costs

One-off premiums for the whole build and annual premiums for an empty plot, from published tariff examples, as of October 2026.

Example	Typical range
Detached house, average new build	one-off about EUR 75 to 120
Building costs EUR 200,000, no self-build work, EUR 10 million cover	one-off about EUR 140
Detached house up to EUR 750,000 building costs	one-off from about EUR 77
Priced by building costs: EUR 0.30 per started EUR 1,000, minimum EUR 75	at EUR 400,000 about EUR 120, with self-build work about EUR 145
Empty plot of 1,000 square metres, property owner's liability	about EUR 32 a year
Extension if the term is not long enough	usually well below the first premium, about EUR 30 to 80 depending on the extra months

The one-off premiums and the plot premium come from the sources listed.

The extension price is a guide value from our quoting practice, insurers do not publish it.

Your premium depends on building costs, self-build work, term and cover limit; we obtain the exact quote for you.

Worked example

Plot bought in January, moving in 20 months later

A couple buys a plot with an old garden shed in January. The shed is torn down in May, the shell starts in June, building costs are EUR 400,000 and they do the painting themselves.

January to April: empty plot	property owner's liability, about EUR 32 a year, or included in the builder's policy
Builder's liability signed	in April, premium paid at once
May: shed demolished	already covered by builder's liability
One-off premium, EUR 400,000 with self-build work	about EUR 145
Term in the policy	24 months from the start
Actual building time	about 19 months, within the term
After moving in	personal liability takes over, builder's liability ends by itself

About EUR 180 in total for the plot and the whole build. Had the work taken 26 months, nobody would have covered the last two months without a timely extension.

The right moment to sign

In Germany the person commissioning a build (the Bauherr) is liable for keeping the site safe. That duty starts long before the shell goes up: when an old shed is torn down, trees are felled or the pit is dug. If a branch lands on your neighbour's car during felling, that is already a claim for builder's liability.

So sign before the first excavator arrives. Many people do it together with the planning application or the mortgage, because German banks often ask for proof. Signing early costs nothing extra, as you pay once for the whole build, not per month.

Cover starts only once you pay

Easy to miss: the product information sheets say cover begins on the date in the policy document (Versicherungsschein), but only if the premium has been paid. Otherwise it begins on the day of payment. The one-off premium is usually due within two weeks of receiving the policy.

If you file the paperwork, put up the site fence and leave the invoice on the desk, you may be building without cover. Pay at once or set up a direct debit (Lastschrift), and the gap is closed.

The empty plot before building starts

Months often pass between buying the land and breaking ground. You are liable as owner during that time too, for example if someone falls into a hole or a rotten tree comes down. Some builder's liability policies include the empty plot until work starts, some do not.

If yours does not, a property owner's liability policy (Haus- und Grundbesitzerhaftpflicht) for the empty plot fills the gap. For 1,000 square metres it costs about EUR 32 a year. Ask before signing whether your builder's policy already covers the time before building starts, so you do not pay twice.

When does cover end?

Builder's liability normally ends when the building work is finished, at the latest at the end of the agreed term. Depending on the policy that is 2 or 3 years from the start date. You do not need to cancel, the contract simply runs out.

It can end early if the risk disappears entirely, for example because you drop the project. After a claim both sides may also cancel. Whether part of the one-off premium comes back depends on the terms, so ask.

Stage	What applies	Which liability cover
Plot bought, no building yet	you are liable as owner	builder's liability that includes the plot, or property owner's liability
Demolition, tree felling, digging	the build has started	builder's liability, premium must be paid
Shell to interior fit-out	building in progress	builder's liability
Work finished, you move in	contract ends by itself	personal liability (Privathaftpflicht)
House is let	contract ends by itself	property owner's liability
Build takes longer than the term	no cover without an extension	ask for an extension before expiry

When the build runs late

Supply problems, a contractor going bust or a long winter: German builds often overrun. If the agreed term ends before the work is finished, you have no cover. Insurers usually extend for an additional premium, but only if you get in touch before expiry.

Put the end date in your calendar with three months to spare. If you only look for a new policy after expiry, you have to explain why work is already under way and may not get the same terms.

What takes over afterwards and where gaps remain

If you live in the new house yourself, your personal liability policy covers you as owner. If you let it, you need property owner's liability. Check this before moving in, not afterwards.

A gap often opens for work done after moving in: paving, a carport, a garden wall. Strictly these are new building projects. Many personal liability policies include smaller projects, depending on the policy up to about EUR 100,000 or 200,000 in building costs. Above that, you need builder's liability again.

Step by step

Check whether your builder's liability includes the empty plot until work starts.
Sign at the latest before demolition, tree felling or digging.
Pay the one-off premium at once or set up a direct debit.
Put the end of the term in your calendar with three months to spare.
If the build is delayed, ask for an extension before expiry.
Before moving in, make sure personal or property owner's liability takes over.

Checklist

Start date before the first day of work on the plot
One-off premium paid and receipt filed
Empty plot covered until building starts
Term long enough for the planned build plus a buffer
Self-build work and help from friends expressly included
Follow-on cover for the time after moving in arranged
Later outdoor work below the project limit of your personal liability

Common mistakes

Signing only when the shell is up, although demolition and digging were already done
Filing the policy and forgetting to pay
Forgetting the end of the term when the build is delayed
Assuming builder's liability lasts until the last paving stone in the garden
Letting the house without taking out property owner's liability

Questions and answers

Frequently asked

From when does builder's liability apply?

From the date in the policy, provided the premium has been paid. If you pay later, cover only starts on payment.

Can I still take it out after work has started?

Often yes, but damage from before is not covered and you must say openly that building is under way. Signing beforehand is safer.

Does my liability policy from my home country cover a build in Germany?

Rarely. Foreign personal liability policies usually exclude building projects or cap them low. Use a German builder's policy based on German building costs.

Will my German bank ask for it?

Many banks ask for proof of builder's liability and building insurance before paying out the loan. Having the policy ready speeds up the first payment.

Do I have to cancel builder's liability?

No. It ends by itself when the building work is finished or at the latest on the agreed date.

Do I need separate cover for the plot before building?

Only if your builder's policy does not include the empty plot. Then property owner's liability for about EUR 32 a year for 1,000 square metres is enough.

What if I never build?

If the project is dropped for good, you can end the contract early. Whether part of the premium is refunded depends on the terms.