Opportunity RadarCosuno
AI-assisted tendering and subcontractor procurement platform for general contractors
Berlin-based SaaS platform that digitizes construction tendering and subcontractor procurement for general contractors, property developers, and architects. Users build bills of quantities, invite bidders from a network of 250,000+ subcontractors, and compare bids side-by-side, while an AI pricing assistant trained on 7M+ tender line-item data points forecasts expected market prices for individual specification positions. Subcontractors use the platform free of charge to view bid requests, submit proposals, and communicate with contractors.
Why This Tool Exists
General contractors and developers run subcontractor tendering through email and spreadsheets, making it slow to solicit enough bids, hard to compare quotes line-by-line against a bill of quantities, and easy to miss pricing errors - Cosuno cites data showing 98% of German construction projects exceed their initial budget.
Cosuno centralizes bill-of-quantities creation, bid invitations, and real-time bid tracking on one platform, connects contractors to a network of 250,000+ subcontractors with AI-recommended bidders based on project criteria and bid history, and surfaces an AI-generated price forecast (trained on 7M+ historical tender price points) for each specification line item to benchmark incoming bids during negotiation.
How You Use It
Data Transparency
Exactly what this tool uses and how
Contact vendor for API accessUse Cases
- ·Publishing subcontractor tenders and tracking bid invitations/responses in real time instead of by email
- ·Benchmarking incoming subcontractor bids against an AI-forecasted market price for each specification line item
- ·Identifying and inviting qualified subcontractors from a 250,000+ bidder network based on project criteria
- ·Comparing multiple bids side-by-side to catch pricing gaps or missing scope before award
- ·Managing contract e-signature, invoice review, and subcontractor payment status after award
Pricing
Research Sources & Data QualityLast verified: 2026-07-17
- https://www.cosuno.com/web/en
- https://www.cosuno.com/web/en/contractor-features
- https://www.cosuno.com/web/en/subcontractor-features
- https://www.cosuno.com/web/en/cosuno-ki
- https://www.cosuno.com/web/en/data-privacy
- https://www.cosuno.com/web/en/company
- https://www.cosuno.com/web/en/gtc
- https://www.cosuno.com/web/en/customers-general-contractors
- https://help.cosuno.com/en/articles/4338102-what-happens-with-my-data
- https://help.cosuno.com/en/articles/4387223-these-are-your-advantages-with-cosuno
- https://marketplace.procore.com/apps/cosuno
- https://techcrunch.com/2022/02/09/german-constructiontech-startup-cosuno-raises-30m-series-b-by-avenir-growth/
- https://tech.eu/2021/05/27/berlin-based-procurement-proptech-cosuno-raises-15-million-in-series-a-round/
- https://www.crunchbase.com/organization/cosuno
- https://www.northdata.com/Cosuno%20Ventures%20GmbH,%20Berlin/Amtsgericht%20Charlottenburg%20(Berlin)%20HRB%20196380%20B
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