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.
Dalux

Transfer project data directly.

Catenda

Centralise all project information.
IBIS

Simple data exchange.
KPD

Easily share data.
Sharepoint

Share and sync documents.
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.

12Build Ecosystem

Link up with leaders in the construction software.

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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Evaluator
EN
Dansk - Danmark DA-DK Deutsch DE Nederlands NL Nederlands - België NL-BE Try 12Build 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 Integrations
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.
Integrations
Dalux

Transfer project data directly.

Catenda

Centralise all project information.
IBIS

Simple data exchange.
KPD

Easily share data.
Sharepoint

Share and sync documents.
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.

12Build Ecosystem

Link up with leaders in the construction software.

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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Evaluator

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Try 12Build

Customers about 12Build

We let subcontractors, general contractors tell you what they think about our platform. Which problems did they face? Which solutions did we offer them?

Latest article

DOM Netherlands

Taking control in a "gray" world Previously, DOM described its approach as “extremely reactive.” The team relied on invitations from clients or random tips...

2 minutes reading
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May 7, 2026

Christiansen & Essenbæk A/S

Centralization as a Foundation for Growth Before implementing 12Build, the tendering process was characterized by fragmented communication and many manual...

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March 16, 2026

VST Fire Solutions

For an ambitious company such as VST Fire Solutions, it was a challenge to break into the established market. ‘You enter a market that is quite niche and in...

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April 28, 2025

General Contractor

Laudy

Estimator Loes de Bruijn shares how 12Build has become an indispensable part of Laudy’s daily operations. From Publications to SharePoint integration — ...

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Want to know more about 12Build?

The name 12Build represents our ambition: we want to build, just like you. But instead of real estate, we want to develop a transparent construction industry.

October 14, 2024

General Contractor

Vuylsteke-Eiffage

From Recognition to Reliance 12Build had been known but not fully embraced at Vuylsteke-Eiffage. "Two or three years ago, our previous lead estimator mentioned...

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October 7, 2024

Customer Stories

Subcontractor

Quattro Expertise

A Decade of Innovation: How Quattro Expertise and 12Build Grow Together. 'It’s great to see that you’re focusing on a niche, rather than just the large ...

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September 1, 2023

General Contractor

Customer Stories

Nieuwenhuis Bouwbedrijf

In 2007, graduate student Erik called on calculator Dinand with an idea: a digital system for processing tenders. “We went live in June 2007,” recalls Erik...

5 minutes reading

September 1, 2023

Customer Stories

Subcontractor

Viridian Solar

Veri..., viredi..., no, Viridian Solar. What a name, right? “It's not always easy when someone asks for your e-mail address,” admits Pim van Oppen,...

7 minutes reading

August 31, 2023

Customer Stories

Subcontractor

Vankan

They have an overload of experience in Dronten, The Netherlands. Vankan delivered more than 10,000 projects in the last few years. Director and sales manager...

3 minutes reading

August 31, 2023

Customer Stories

Subcontractor

EeStairs

Some subcontractors want to accept every project that comes their way, but others are more selective. This can be due to time constraints or because a project...

6 minutes reading