Contrat.io Features: How the Review Workflow Works

Contrat.io is a document review and comment resolution workspace for AEC and EPC teams. This page walks through the product feature by feature — the roles, the review cycle, and what you get at close-out.

Three Roles, Clearly Separated

Every review involves three roles with enforced permissions:

Document Controller — uploads the document, initiates the review workflow, and assigns the participants.
Author and co-Authors — respond to review comments and issue revised document revisions.
Reviewer and co-Reviewers — raise comments, verify resolutions, and are the only ones who can close their own comments.

Co-Author and co-Reviewer roles make multi-discipline reviews native: a lead reviewer invites discipline reviewers, and all their comments land in the same sheet — no consolidation step, no merged spreadsheets. Invited participants join with free Collaborator access; only document owners need a paid plan.

Review Documents Where the Comments Live

Document View — reviewers mark an area directly on the document and attach a comment. Each comment gets a unique, permanent ID and a visible anchor box on the page, so every comment is tied to an exact location on an exact revision.
CRS View — the same comments as a structured comment resolution sheet: ID, location, comment text, response, status. Document View and CRS View stay in sync; work in whichever fits the task.

A Controlled Comment Lifecycle

Freeze — when a reviewer completes their pass, they freeze their comment set. Frozen means committed: the author is notified and responds to a stable set, not a moving target.
Respond — authors answer every comment individually, through either view, and issue a new revision where changes are required.
Iterate — there is no limit on review iterations. Open comments carry forward automatically; each iteration is recorded.
Close — when the reviewer is satisfied, they approve, and the document exits the cycle with every comment resolved. The full lifecycle and status model is described in What Is a Comment Resolution Sheet?

Notifications and Deadlines

Participants are notified when action moves to them — comments frozen, responses issued, revisions uploaded — and deadline reminders chase overdue steps automatically, so the document controller doesn't spend their day sending follow-up emails.

Everything Is on the Record

At any point — and especially at close-out — you can download the original document revision, the marked-up document, and the complete CRS with every comment, response, status change, and timestamp. That export is your audit trail: evidence of who raised what, who resolved it, and when, in a form you can hand to a client, an auditor, or a claims team. Why that matters: The Ultimate Guide to EPC Document Control.

Plans and Getting Started

Contrat.io offers a free Collaborator role for invited participants, a Lite plan at €21.90/month, a Professional plan at €54.90/month (yearly billing discounts available), and an Enterprise tier for larger teams. Every subscription starts with a 30-day free trial, no credit card required.

Start your free trial or contact us for a walkthrough. If you're comparing tools first, see how Contrat.io stacks up against Bluebeam, Excel, and full CDE platforms.

Three Roles, Clearly Separated

Every review involves three roles with enforced permissions:

Document Controller — uploads the document, initiates the review workflow, and assigns the participants.

Author and co-Authors — respond to review comments and issue revised document revisions.

Reviewer and co-Reviewers — raise comments, verify resolutions, and are the only ones who can close their own comments.

Review Documents Where the Comments Live

Document View — reviewers mark an area directly on the document and attach a comment. Each comment gets a unique, permanent ID and a visible anchor box on the page, so every comment is tied to an exact location on an exact revision.

CRS View — the same comments as a structured comment resolution sheet: ID, location, comment text, response, status. Document View and CRS View stay in sync; work in whichever fits the task.

A Controlled Comment Lifecycle

Freeze — when a reviewer completes their pass, they freeze their comment set. Frozen means committed: the author is notified and responds to a stable set, not a moving target.

Respond — authors answer every comment individually, through either view, and issue a new revision where changes are required.

Iterate — there is no limit on review iterations. Open comments carry forward automatically; each iteration is recorded.

Close — when the reviewer is satisfied, they approve, and the document exits the cycle with every comment resolved. The full lifecycle and status model is described in What Is a Comment Resolution Sheet?

Everything Is on the Record

Plans and Getting Started

Start your free trial or contact us for a walkthrough. If you're comparing tools first, see how Contrat.io stacks up against Bluebeam, Excel, and full CDE platforms.