reebuild, a Vienna company that automates the commercial back office of construction firms and property developers, has raised €3 million in a seed round led by Fortino Ventures, the early-stage arm of the Belgian B2B software investor Fortino Capital, with Rise PropTech and CuriosityVC participating. The round was announced on 13 October and reported the same day by tech.eu and the Austrian outlet Trending Topics, which adds that the Hansmann Family Office of business angel Hansi Hansmann is among the existing backers and that earlier money came from the Austrian public agencies aws and FFG.
None of the coverage reviewed for this piece puts a valuation on the round, and reebuild’s own site carries no press section and no funding post, so no company figure for total capital raised to date was available for this report.
The wedge is the invoice, not the project
There is a familiar pattern in construction software: pick the most painful document in the workflow, own the data it generates, then expand outward. reebuild picked the subcontractor invoice.
The company’s product checks invoices line by line against what was ordered and what was actually delivered, rather than approving a total. Its own site describes a stack built around that single act: invoice verification and approval workflows, document management, delivery-note checks and warehouse tracking, budget-versus-actual cost tracking, and price comparison across materials and services. It reads PDFs, photographs, scans and electronic invoices and turns them into structured records, then matches related documents and recalculates corrections. Per tech.eu, the approval decision itself stays with a person.
The integration list is the tell that this is aimed at the finance function rather than the site. reebuild’s site names DATEV, BMD, BRZ and RZL — accounting systems widely used in Austrian and German practice — alongside support for the ZUGFeRD, XRechnung and Peppol e-invoicing formats. This is software designed to sit underneath an existing ERP and accounting stack, not to replace it, which is the same posture Agave took with contractors’ ERPs in July.
The numbers reebuild puts behind it
The following are the company’s own figures, published on its site and repeated in the launch coverage:
- more than 120 construction companies and project developers using it
- more than €530 million in invoice volume approved through the platform
- more than 8,200 construction sites and projects
- more than 345,000 documents processed
On results, reebuild says invoice handling drops from more than 20 minutes to roughly three, and that the time from receipt to approval falls from about five days to a day and a half. It also reports customers seeing procurement costs up to 20% lower. Those last figures are customer-reported and vendor-published; they are worth testing against your own baseline rather than banking.
What gives the customer count more weight than most seed-stage traction claims is that the names are checkable on reebuild’s own site. Logos and testimonials there include the Austrian contractor Pittel + Brausewetter, the Kratzert Group, and 3SI Immogroup, whose head of finance and accounting is quoted by name. Trending Topics also lists Rödl & Herdegen among the customers. A named, published customer is a materially different claim from “a top-ten contractor”, and this newsroom treats the two differently.
Vienna, and the rest of the DACH back office
reebuild was founded in 2022 and runs about 25 people at its Vienna headquarters, with the software built in Vienna and hosted in Germany, per Trending Topics. Alexander Kornell is co-founder and chief executive; Trending Topics names Matteo Cimadom as chief revenue officer, Luca Papay as chief technology officer and Nicolaus Lederer as chief operating officer.
Kornell is quoted by tech.eu saying: “We know the problems of this industry firsthand, and we build reebuild together with our customers, extremely close to the day-to-day reality on site.”
Analysis. The German-speaking market has produced a steady run of construction back-office and document-AI rounds this autumn, and reebuild is the second this newsroom has covered in a fortnight. Kuro’s €10 million, announced on 30 September, rested on twelve customers, six of them tier-one DACH general contractors, and worked the estimating and document-intelligence end. Trending Topics places reebuild against PlanRadar, Capmo, Cosuno and Candis — a set that spans site documentation, tendering and invoice capture, and which indicates how finely this market is now being sliced.
The strategic question for all of them is the same one that applies to SubBase in materials procurement and Trayd in specialty-trade payroll: whether owning one document is a durable position or a feature that an incumbent ERP absorbs. reebuild’s answer, as stated, is to keep adding modules until it holds the whole commercial workflow. The company says the money funds hiring across all departments through 2027, expansion beyond Austria and Germany into other European markets, and new AI modules spanning cost estimation, on-site documentation and accounting — with what Trending Topics reports as a longer-term goal of an “agentic back office” in which the agents handle checking, matching and pre-booking themselves.
That phrase is doing a lot of work, and it is the company’s ambition rather than a shipped product. What reebuild has demonstrably built is a line-item checker with a real customer list and a specific, narrow claim about minutes saved per invoice. Whether the agents arrive is the part to watch.
