Your company
General Contractor

Unnecessary waste of time within the tendering process is a thing of the past.

Subcontractor

Stand out in tender invitations and grow your network.

Supplier

Own your brand’s impact in the construction process.

Our solutions
Quickly create projects

Create projects and manage all underlying work items and documents.

Create projects Manage documents and work items
Create and send requests

Link permanent and new parties to work items and send your requests.

Find existing and new parties Send offer requests
Manage and compare received bids

Ensure good communication in your bidding process.

Real-time overview of statuses Compare received bids
Greater visibility for your projects

Easily bring your project to the attention of subcontractors.

Give your project a stage with 12Build Publications
Manage your personal database

Company information and contact details always up-to-date.

Manage your trusted partners
Search regular and new parties in our Marketplace

Proven expertise in Europe's largest Marketplace.

Find the best subcontractors
Evaluate your collaborations

Get valuable information from evaluations.

12Build Evaluator
Keep quotation requests clear

Receive, manage and respond to all quotation requests.

Central overview of requests
Create the perfect quotation

Create a good quotation quickly with budget rules and stay in control.

Respond to requests for quotations Instant visibility into quotation status
Attract the attention of general contractors

Provide relevant requests with a unique and complete company profile in the 12Build Marketplace.

Activate your company profile Boost your visibility
Find projects easily

View public projects from general contractors.

Easily respond to opportunities with 12Build Publications
AI in 12Build

Less searching, faster decisions. Discover how AI does the groundwork for you.

Frequently asked questions

Quickly analyze your quotes securely with AI while retaining full control over your own data.

AI Whitepaper

Transform manual quotation work into predictive procurement with the practical AI roadmap for the construction industry outlined in this whitepaper.

Resources
Blogs

If you want to enlarge your knowledge, or just looking for inspiration, then check out our blogs.

Customer stories

Our customers know us best. Read here what they think about 12Build.

Whitepapers

Knowledge should be shared. You can find our whitepapers here.

AI in 12Build

Less searching, faster decisions. Discover how AI does the groundwork for you.

Take a look
About us
Our story

Building a transparent construction industry together.

Work at 12Build

With pride and passion. Come work at 12Build.

Contact

We are happy to help. Reach out to us.

Become a partner

Let's collaborate to combine our expertise.

Pricing
General Contractor

Reach out to know more about pricing for general contractors.

Subcontractor

Check out our pricing for subcontractors.

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12Build

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Evaluator

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Your company Your company
General Contractor

Unnecessary waste of time within the tendering process is a thing of the past.

Subcontractor

Stand out in tender invitations and grow your network.

Supplier

Own your brand’s impact in the construction process.

Our solutions Our solutions Tender management Supplier management Bid management AI in 12Build
Perhaps you are a
Estimator Project developer Architect Software partner
Tender management
Quickly create projects

Create projects and manage all underlying work items and documents.

Create projects Manage documents and work items
Create and send requests

Link permanent and new parties to work items and send your requests.

Find existing and new parties Send offer requests
Manage and compare received bids

Ensure good communication in your bidding process.

Real-time overview of statuses Compare received bids
Greater visibility for your projects

Easily bring your project to the attention of subcontractors.

Give your project a stage with 12Build Publications
Supplier management
Manage your personal database

Company information and contact details always up-to-date.

Manage your trusted partners
Search regular and new parties in our Marketplace

Proven expertise in Europe's largest Marketplace.

Find the best subcontractors
Evaluate your collaborations

Get valuable information from evaluations.

12Build Evaluator
Bid management
Keep quotation requests clear

Receive, manage and respond to all quotation requests.

Central overview of requests
Create the perfect quotation

Create a good quotation quickly with budget rules and stay in control.

Respond to requests for quotations Instant visibility into quotation status
Attract the attention of general contractors

Provide relevant requests with a unique and complete company profile in the 12Build Marketplace.

Activate your company profile Boost your visibility
Find projects easily

View public projects from general contractors.

Easily respond to opportunities with 12Build Publications
AI in 12Build
AI in 12Build

Less searching, faster decisions. Discover how AI does the groundwork for you.

Frequently asked questions

Quickly analyze your quotes securely with AI while retaining full control over your own data.

AI Whitepaper

Transform manual quotation work into predictive procurement with the practical AI roadmap for the construction industry outlined in this whitepaper.

Resources Resources
Blogs

If you want to enlarge your knowledge, or just looking for inspiration, then check out our blogs.

Customer stories

Our customers know us best. Read here what they think about 12Build.

Whitepapers

Knowledge should be shared. You can find our whitepapers here.

AI in 12Build

Less searching, faster decisions. Discover how AI does the groundwork for you.

Take a look
About us About us
Our story

Building a transparent construction industry together.

Work at 12Build

With pride and passion. Come work at 12Build.

Contact

We are happy to help. Reach out to us.

Become a partner

Let's collaborate to combine our expertise.

Pricing Pricing
General Contractor

Reach out to know more about pricing for general contractors.

Subcontractor

Check out our pricing for subcontractors.

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12Build

12Build Evaluator Login Icon

Evaluator

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Try 12Build

AI for smart collaboration in construction

Accelerating the Bid- and Tender proces addressing the challenges of the European construction market.

Start building smarter Download whitepaper

Challenges in Construction that require Smart Solutions.

The construction industry is at a crossroads. Labor shortages are increasing, while mistakes cost the sector an average of 11% of project budgets. 38% of these costs start during the early bidding phase. There is no longer room for error. 

AI capabilities in 12Build

Explore how 12Build's AI-powered features optimizes the entire sourcing process, enabling faster decisions and more accurate results.

Documentviewer & Smart Analysis

Documentviewer & Smart Analysis

Open files directly in the platform and immediately see the most important quotation details in a single overview.
Analysing Quotations with AI

Analysing Quotations with AI

AI analyses quotations automatically for content, giving you an overview without having to scan every document yourself.
Smart Matching

Smart Matching

AI automatically suggests the most suitable subcontractors or suppliers for a project based on project requirements and historical data.
Profile Enrichment

Profile Enrichment

Supplier and subcontractor profiles in 12Build are automatically updated with new information, so you always work with the most up-to-date market data
AI Project Fit

AI Project Fit

AI Project Fit automatically analyzes projects. Assess their value within minutes and focus directly on your most promising requests.
Smart Notifications

Smart Notifications

Notifications help you take action at the right time so you don't miss opportunities or deadlines. Work proactively instead of reactively.

AI Insights

Discover how intelligent technology is reshaping the building sector. These latest insights explore how AI transforms the bidding and tender process.
All blogs

2 min

Your data is yours. Period.

Learn why your data stays within your walls and is never used to train public AI models.

2 min

Why your construction expertise remains indispensable in the age of AI

Discover how 'Human in the Loop' technology empowers your team without ever taking over the wheel.

2 min

How to create peace in the chaos of the tender deadline pressure

Ditch the final-hour panic and reclaim control over your most stressful tender deadlines.

2 min

Why your expertise deserves better than manual data entry

Your talent is too valuable for manual data entry and 're-typing'. Move beyond the 'PDF puzzle' and transform unstructured documents into actionable data with a single click.

2 min

How to create quotations that are indispensable for the modern general contractor

Make it impossible for General Contractors to miss your smart alternatives and competitive strengths, so that they can't ignore your quotation.

2 min

Build the future of your sourcing process with predictive AI

Explore the roadmap from manual administration to predictive quality and join the leaders of the next digital era.

Collaborative innovation

Innovating together, succeeding together.

By leveraging 12Build’s AI focus on improving how quotes are requested, analyzed, and compared, you achieve the true professionalization of construction procurement.
Francis Verstraete Chief Vision Officer
We now complete standard requests in 15 minutes and even complex ones in 30–60 minutes. That’s huge.
Julia Wiechoczek Procurement Officer, Kleusberg
The platform has been avaluable resource for us, which in addition to saving us significant time, reduces the risk of errors in communication and documentation.
Casper Jacobsen Tender Manager, Gravmand A/S
Everything is in one place, you work in a structured way, and it's easy to use. I wouldn't want it any other way.
Loes de Bruijn Estimator, Laudy

Discover the power of AI

Learn how AI protects your profits and optimises collaboration in construction.

Download the Whitepaper

Datasecurity in 12Build

At 12Build, the security of your data is central. Would you like to know more about how we protect your data, our general security measures or how we deal with AI? Then take a look at our detailed information pages.

FAQ - AI in 12Build

Data Protection

Security Overview

Frequently Asked Questions about AI

Where is my data stored?

Your documents remain secure within the 12Build platform. For AI analysis, relevant text segments are temporarily processed by a secure partner (OpenAI) and indexed in our own vector database (Qdrant). Your data is never permanently stored by third parties for other purposes.

Is my data used to train the AI model?

No. Your documents and company data are used exclusively as context for your own queries. They are not used to train OpenAI’s models for the outside world. Your intellectual property remains yours.

Does the AI only use my own company data?

Yes. Each analysis is performed strictly on the documents you select at that moment. There is no cross-contamination with data from other customers; your environment is completely isolated.

How do you handle confidential information (NDAs)?

Confidential data stays within the secure chain of 12Build and its contracted suppliers. Information is not further distributed and is not accessible to third parties. This means AI can be safely used for projects under non-disclosure agreements, provided it fits within your own organizational guidelines.

Who has access to my data?

Access is restricted to you and a limited number of 12Build employees for technical management and support. The external AI provider only has access during the execution of the analysis. Your data is never shared with other customers.

What technology is being used?

We combine LLM technology (OpenAI) for text analysis with Qdrant to instantly retrieve relevant fragments from your documents. This ensures that answers are always based on your specific sources.

Does the AI make independent decisions?

No. The AI is intended solely for analysis and support. Every action or decision requires your manual approval. Furthermore, AI output is always clearly marked visually.

How reliable is the AI output?

AI results are supportive in nature. While we use technical validation to structure the output, the final responsibility for interpretation and verification always rests with the user.

Want to know more?
View the full detailed answers here

Start Smart

Explore how AI-enhanced sourcing reduces your administrative burden and leads to more predictable outcomes.

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