Legal · 7 min · 10 November 2026
AB 92, AB 18 and AB Forbruger: what applies to your quote?
Many Danish quotes still refer to AB 92, even though it was replaced years ago. And for private customers, AB 18 is not the right document at all. Here is a short overview of the terms that apply and what they mean for how you write quotes.
AB 92 has been replaced by AB 18
In 2018 the Danish standard building terms AB 92 were replaced by AB 18. ABT 18 replaced ABT 93 for turnkey contracts, and ABR 18 replaced ABR 89 for consultants. The committee recommended using the new terms for agreements made from 1 January 2019. AB 18 is not a law: it only applies when the parties agree to it, and any deviations must be stated clearly.
Businesses: AB 18. Private customers: AB Forbruger
AB 18 is written for agreements where the client is not a consumer. For private homeowners, AB Forbruger is the standard made for the purpose. It was drawn up by the Danish building authority with Dansk Byggeri, Tekniq and the Danish Consumer Council, and was last revised in June 2012. It also only applies when agreed.
Key points
- AB 18 security: 15% until handover, then 10%, 2% one year after handover and released after five years. Below DKK 1 million, security is only required if the client asks for it.
- AB Forbruger: a quote lapses if not accepted within 20 working days, unless you set another deadline. If an estimate looks like being exceeded by more than 15%, you must ask the customer first.
- Prices to consumers must include VAT, and agreements made away from your business premises normally carry a 14-day right of withdrawal.
- Danish home services deduction 2026: up to DKK 9,000 for green renovation and DKK 18,300 for services per person, labour only.
This is a practical overview, not legal advice. In Calco your standard terms appear on every quote, so set them up once with the right reference.
Frequently asked questions
- Does AB 92 still apply?
- AB 92 has been replaced by AB 18, recommended for agreements from 1 January 2019. New quotes should refer to AB 18 for businesses or AB Forbruger for private customers.
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