Your app for construction acceptance

Guarantee a smooth and successful handover of your construction project!

Your advantages with the digital Construction handover

Stop the clutter! Easily record the start, intermediate stages, or completion of your construction projects with a defect management app. Have all tickets from a construction site compiled into one PDF for a proper Construction handover. Enrich your protocols with photos and thus enable a comprehensive and complete overall impression.

Enrich your protocols with photos

Add more notes and markers with ease

All tickets are exportable as a PDF

Access anytime & anywhere – even without internet connection

Attach file attachments to the ticket – e.g. in XLS, JPG, PDF or IFC format.

How the construction acceptance app works

With the 123onsite quality module you can optimize the documentation on your construction site. The app ensures fast data backup of all processes, clearly displays all pending activities and documents its progress.

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More Information

Your storage centrally on one channel

No more switching between different tools, but everything centralized in one place. All logs are directly assigned to the correct construction site. This way, nothing gets lost and everything is directly accessible.


Manage files via app

Upload all relevant files to the app and assign them to a ticket, without any difficulties. If needed, you can attach additional photos, PDFs, IFC files and more to the ticket to expand the information.


Activity log for proof of progress

Each ticket has a searchable activity log from which you can determine exactly who created each ticket and when, or what changes were made.


Runs on any device – iOS or Android

Our defect management app is available on iOS and Android for tablets and smartphones, along with an online app for your PC. Simply download it from the iOS AppStore or the Google Play Store and start using it right away.

Dipl.-Ing. Norbert Kees, Geschäftsführer der Amberg Bau GmbH & Co. KG mit seinem Laptop

Benefit from a comprehensive Construction handover via App

Searching for missing documents can become stressful and confusing. Organize yourself better for future handovers – with the Quality module from 123onsite.




Create tickets for tasks or defects and locate them on the stored plans. You always have your documentation at hand. Digitally and mobile via app.

Find out more
123quality Whitepaper "Smart Bauen" dank Mängelmanagement

“Smart building” thanks to defect management

In our series on smart construction, you’ll learn how and why you should manage your entire construction site from start to finish – paperless, without data loss, with maximum time savings and absolutely cost-efficient. As we all know, you can’t make an omelet without breaking eggs, and the more you build, the more likely things will go wrong somewhere on the construction site. In this white paper, you’ll learn the important rules for avoiding and managing construction disruptions and how to easily comply with them.

Paperless in the office –
start now for free

It’s simple: Through our apps, you reduce the effort of your data entry, have an overview at any time during your project and can check your calculation afterwards.
Even easier: With us you save time and money.


Sign up for 123onsite for free


Enter your company and your employees


Collect data and enjoy your digitized construction site

Discover interesting facts about the digital Construction handover with 123onsite


Blog articles

Find out more about deadlines, common mistakes and why digital defect management is a key to budget control and greater efficiency, in our blog.


123onsite quality

With 123onsite quality you create individual forms for a successful site inspection including defect reports or handover and inspection protocols.


Success story

Recording, documenting and tracking defects has been a time-consuming undertaking for the construction company Amberg Bau GmbH, especially with the booming volume of orders. 123onsite helps!

Ask us your questions about the app for construction acceptance