Do I need builder's liability insurance if I build turnkey in Germany?
In short
Do I need builder's liability insurance if I build turnkey in Germany? Yes, if you own the plot and a construction company builds on it: you are then the Bauherr and share liability for the site. For a family home it usually costs a one-off EUR 100 to 250. If you buy house and plot from a developer (Bauträger), you need no policy of your own.
Published prices and limits for builder's liability insurance in Germany, October 2026.
Example
Typical range
Average family home, whole construction period
one-off about EUR 100 to 250
Price range for the same project depending on the policy
about EUR 17 to 1,260
Building cost included in good personal liability policies
EUR 100,000 to 500,000, some without a limit
DIY work above which it gets clearly dearer
more than EUR 20,000
Guide values from public tariff overviews.
Your premium depends on building cost, sum insured and DIY work.
Worked example
Own plot, general contractor, building cost EUR 380,000
How to check whether you need your own builder's liability insurance.
Who owns the plot?
you, so you are the Bauherr
Building cost in your personal liability policy
up to EUR 250,000, not enough
DIY work
none
Builder's liability for EUR 380,000
one-off about EUR 100 to 250
You take out builder's liability insurance before the first spade goes in and have the building contract state that the general contractor takes on the site coordination.
Turnkey does not always mean the same
Turnkey (schlüsselfertig) only describes how much the company delivers, not who carries the role of Bauherr. What counts is who owns the plot during construction and who signs the building contract.
If a general contractor or a prefab house maker builds turnkey on your own plot, you are the Bauherr. If you buy a finished house with the plot from a developer, the developer builds on its own account and carries the builder's risks itself.
Contract
Who is the Bauherr?
Own builder's liability insurance?
General contractor builds on your plot
you
yes, unless personal liability cover is enough
Prefab house maker builds on your plot
you
yes, some insurers give a discount for prefab houses
Developer sells house with plot
developer
no, but read the contract
Architect and separate trades
you
yes, most important here
What stays with you on a turnkey build
Even with a turnkey contract you remain responsible as Bauherr. The construction company is liable for its own mistakes through its business liability insurance. You keep the duty to make your plot safe for others, the duty to choose and supervise suitable firms, and the risk that the company goes bust.
If staff of several firms work on site, for example subcontractors of the general contractor, the German site regulation (Baustellenverordnung) requires a safety and health coordinator. That duty falls on you first. You may hand it over to a third party, including the general contractor. Put this in writing in the building contract.
When personal liability cover is enough for a turnkey house
Good personal liability policies (Privathaftpflicht) include building projects up to a set building cost, in compared policies between EUR 100,000 and 500,000, some without a limit. If your turnkey house costs less than that limit and you do no work yourself, this cover can be enough.
Check three points in the terms: the insured building cost, whether the project may be at another address and whether DIY work is excluded. Ask the insurer to confirm the cover for your turnkey project in writing.
What it pays and what it does not
Builder's liability insurance pays when other people are harmed by your site and you are liable as Bauherr, for example a passer-by who falls into an unsecured pit at night. It also fights unjustified claims, in court if needed.
Damage to the house itself, such as storm damage or theft on site, is not covered. That is what construction all risks cover (Bauleistungsversicherung) and fire cover for the shell are for.
When you do not need your own policy for a turnkey build
If you buy from a developer, the developer is the Bauherr and you need no builder's liability insurance for that project. If your personal liability policy demonstrably covers the building cost, you do not need a second contract either.
Your own policy almost always pays off if you lend a hand yourself. DIY work worth more than EUR 20,000 makes the cover noticeably dearer but does not rule it out.
Step by step
Check the contract: building contract on your own plot or purchase from a developer?
Look up the building cost limit in your personal liability terms.
If it is too low, take out builder's liability insurance before work starts and pay the premium.
Hand the site coordination over to the company in the building contract.
Ask for proof of the company's business liability insurance.
Checklist
You own the plot, so you are the Bauherr
Building cost limit of your personal liability policy known
Sum insured at least EUR 3 million
Planned DIY work declared
Site coordinator arranged
Construction company's liability cover confirmed
Common mistakes
Thinking turnkey makes the company the Bauherr automatically
Relying on personal liability cover without checking its building cost limit
Paying the one-off premium only after work has started
Not reporting DIY work added later
Questions and answers
Frequently asked
Is the construction company not liable for everything on a turnkey build?
For its own mistakes, yes.
Making your plot safe, choosing and supervising the company and the risk of its insolvency stay
with you as Bauherr.
Do I need builder's liability insurance for a prefab house?
Yes, if the prefab house goes up on your plot.
Some insurers give a discount for prefab houses or short build times.
Who is the Bauherr when I buy from a developer?
The developer.
It builds on its own account, so you need no policy of your own for that project.
Do I have to appoint a site safety coordinator?
Yes, if staff of several firms work on the site.
You may hand the task to a third party, such as the general contractor.
Is my personal liability policy enough for a turnkey house?
Only if its insured building cost is higher than yours.
Good policies cover EUR 100,000 to 500,000, some without a limit.
When must the cover start?
Before the first spade goes in.
Pay the one-off premium at once: if it is still unpaid when damage happens,
