Calculate and invoice HOAI fees without switching systems.
Fee calculation, interim and final invoices under HOAI 2021 (the German fee scale for architects and engineers), in the same project as site inspection and award.
Service phases, fee zone, interim invoices.
All in the same project.
Section 13 interpolation.
LP 1–9 & seven service profiles.
Interim & final invoices.
From service profile to invoice.
One connected path instead of an isolated tool.
HOAI regulates the fees for design services in Germany. Structify calculates fees by Section 13 interpolation (§ 13 HOAI) between the reference points of the fee table, for seven service profiles of object and specialist planning and service phases 1 to 9 (LP 1–9), and creates interim and final invoices from them.
- Section 13 interpolation. Fees calculated precisely between the reference points of the fee table.
- LP 1–9 & seven service profiles. From basic evaluation to project support.
- Interim & final invoices. Payment status, forecast and payment reminders included.
You handle this task in Structify, in the same project as fees, award and acceptance.
See StructifyFrom the first idea to acceptance, in one system.

HOAI fees, briefly explained.
Structify calculates on the basis of HOAI 2021.
Structify calculates fees under HOAI 2021 for seven service profiles: buildings, interiors, open spaces, engineering structures, traffic facilities, structural design and building services.
Yes, as a PDF.
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