The situation
A building owner’s claim for defects found after handover
Your company, a roofing contractor with branches in Rotterdam and Graz, has received two claims in a month. A Rotterdam housing association reports leaks in roofs handed over 26 months ago. A Graz hotel owner reports failed insulation on a roof built to the owner’s own specification just under three years ago.
The questions are the same in both. Is the claim still alive, and is the contractor liable for something the owner accepted at handover? The rules on notice, limitation and hidden defects differ in each country, and the courts decide the borderline cases. That research takes the days.
What the research has to settle
The rules behind the answer
- Netherlands: handover limits the claim
- Under the Dutch Civil Code, after handover the contractor is no longer liable for defects the client should reasonably have noticed at that moment. Hidden defects remain the contractor’s responsibility.
- Netherlands: notice, then limitation
- The client must complain within a reasonable time after discovering a defect, and the claim becomes time-barred a set period after that complaint. Standard conditions such as the UAV 2012 add their own periods for hidden defects.
- Austria: warranty and damages run separately
- Austrian law gives a warranty period for works on immovable property that runs from handover, and a separate damages claim with its own limitation running from the owner’s knowledge of the damage and of the party liable. The two can give different answers on the same facts.
- Austria: the contractor’s duty to warn
- An Austrian contractor must warn the client where the client’s instructions or materials are clearly unsuitable. A failure to warn can shift liability to the contractor, and the case law sets how obvious the problem must have been.
How it runs in azta
From the question to the document
The question, as you would type it
Roofing contractor. (1) Rotterdam housing association reports leaks 26 months after handover under the UAV 2012. (2) Graz hotel reports failed roof insulation 35 months after handover, built to the owner’s specification. Are the claims time-barred, and how have courts treated hidden roof defects and the duty to warn?
You start with
A building owner’s claim for defects found after handover
- 01
Set out the facts and dates
Give the handover dates, what was accepted, when the defects were reported and the contract conditions. azta searches the Dutch and Austrian civil codes.
Cited research· Free - 02
Find the decisions on hidden defects
Ask how the courts treated roof defects found after handover and the duty to warn. azta searches Rechtspraak.nl and the Austrian decisions it holds, and links each one.
Case-law search - 03
Draft the reply
Ask for a reply that acknowledges the report, reserves the defences and sets out next steps. Edit it in Canvas and translate it if needed.
Canvas · Ask azta· Pro - 04
Send it as Word
Export the letter to Word for signature, with the research kept for the claim file.
Word export· Pro You send
A reply on notice, limitation and liability, with the case law relied on
What you get
A reply on notice, limitation and liability, with the case law relied on
Reply to claimant · draft
Your claim for roof defects at the Kralingen estate
We acknowledge your letter of 6 October reporting leaks in the roofs of blocks C and D. Our client takes the report seriously and has arranged an inspection on 30 October.
The roofs were handed over on 28 August 2024 and accepted without reservation. Under the contract and the applicable conditions, our client is not liable for defects that should reasonably have been noticed at handover. Liability for hidden defects remains, and the inspection will establish which kind the reported leaks are.
Our client reserves all rights, including on the timeliness of the complaint and the limitation of any claim. We will write again with our position after the inspection.
Outcomes on your numbers
What azta is worth on this task
Pro pays for itself after
14 minutes a month
At €120 an hour, that is all the time Pro (€27 a month) has to take off your desk to cover its price.
Example figures. Replace them with your own.
- Hours back a year
- 49
- Capacity at your rate
- €5,832
- More defect-claim replies a quarter
- 2.2
- Return on Pro
- 18×
- Research
- Drafting
- Your review
A scenario you set, not a promise. The hours that come back go to another client, or deeper into this one.
Want these numbers on your team’s real workload?
Book a demoWhat stays with you
- The technical cause of the defect, which needs the inspection.
- The decision to accept, contest or settle.
- Reading the decisions the letter relies on.
Frequently asked questions
- Does azta hold the UAV 2012 or ÖNORM B 2110?
- No. Those are standard conditions, not legislation. Upload the contract with its conditions and azta reads them alongside the law and the decisions.
- Which courts does it search for the Netherlands and Austria?
- The published decisions in its source register, including Rechtspraak.nl and the Austrian RIS. Coverage varies by country; the register lists each collection.
- Can it draft the letter in Dutch or German?
- Yes. Ask for the letter in the claimant’s language, or select the English draft in Canvas and ask for a translation.



