Revision Control
Include revision number, date, and short change summary on each sheet so readers can identify the latest version at a glance.
Using a formal add-on drawing ensures clear revision history, reduces disputes over scope, and preserves a verifiable record of technical changes tied to approvals and dates.
Several project roles produce or act on add-on drawings; clarity on responsibilities speeds review and avoids rework.
Assigning a single responsible party for version control and circulation reduces errors and ensures timely approvals.
Include revision number, date, and short change summary on each sheet so readers can identify the latest version at a glance.
Provide a table of contents showing all associated sheets, their filenames, scales, and relation to the parent drawing set for easy cross-reference.
Show scale, north arrow and a concise legend to avoid misinterpretation of dimensions and symbol usage across revisions.
List supporting documents (specs, photos, or notes) with file names and version identifiers so reviewers can locate referenced materials.
Include signer name, role, signature, date, and company; record method of signature (electronic or handwritten) for legal clarity.
Reference related change orders, purchase orders, or scope exhibits to ensure contractual linkage between drawings and project documents.
| Field | Configuration |
|---|---|
| Template | Use a standard add-on drawing template with preplaced fields for metadata and approvals. |
| Conditional Fields | Show notarization or witness fields only when required by the document or jurisdiction. |
| Authentication | Require email confirmation or SMS code depending on signer risk level. |
| Routing Order | Define signer sequence and set reminders for overdue actions. |
Choose a signing platform that supports required authentication, audit trails, and common file formats used for drawings.
Ensure the vendor supports secure storage (AES-256 at rest, TLS 1.2/1.3 in transit), audit trail export, and any required BAAs or regulatory attestations.
Submit for internal review within 2 business days
Allow 5 business days per technical reviewer
Aim to obtain all approvals within 10 business days
Resolve minor comments within 7 days
Archive signed addendum within 30 days of final approval
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | Yes, 7-day free trial | Varies by vendor | Varies by vendor | Varies by vendor | Varies by vendor |
| Bulk Send | Yes | Yes | Yes | Yes | No |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
| Envelope Cap | No envelope cap | 100 envelopes/user/year | Varies by plan | Varies by plan | Varies by plan |
Martin Properties used Project Management Add-on Drawings to process lease drawings and workflow approvals without in-person meetings.
Xerox integrated signed addenda with ERP workflows to automate approvals and recordkeeping.