Contract Reference
Cite the original contract title, date, and parties to ensure the supplemental is legally tied to the base agreement and to prevent ambiguity in later enforcement.
A clear, signed supplemental keeps changes off informal email threads and makes cost, schedule, and responsibility changes explicit. It reduces ambiguity about who pays, who obtains permits, and how delays are handled.
The document should be signed by whoever has contracting authority within each party — typically an owner representative, general contractor, and any impacted subcontractor.
| Field | Configuration |
|---|---|
| Signer Order | Sequential or parallel routing |
| Authentication | Email + SMS code recommended |
| Attachments | Include drawings and permits |
| Audit Options | Enable full audit trail |
Ensure the chosen workflow preserves a tamper-evident signed copy and an audit record that includes timestamps, IP addresses, and signer details.
Cite the original contract title, date, and parties to ensure the supplemental is legally tied to the base agreement and to prevent ambiguity in later enforcement.
Provide a precise scope description, including drawings, material specs, and deliverables so performance obligations and acceptance criteria are unambiguous for all trades.
Itemize added costs, allowances, unit rates, and contingencies; specify who pays taxes, permit fees, and escalation clauses to avoid payment disputes.
State revised milestone dates, float allocation, and liquidated damages adjustments where applicable so time-based claims are documented and adjudicated consistently.
Record permit responsibilities, inspection timing, and safety requirements; identify which party secures approvals and how code compliance will be certified.
Define acceptance conditions for future change orders, invoicing procedure, and dispute resolution steps so subsequent modifications follow the same governance.
Submit revised plans to authority within required application window
Allow the owner X days to accept or dispute pricing (negotiated term)
Issue invoice per supplemental milestones or within stated payment period
Release based on final acceptance milestones
Mechanic's lien filing deadlines vary by state; confirm local statute
| 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 | 7-day free trial, no credit card required | Varies by vendor | Varies by vendor | Varies by vendor | Varies by vendor |
| Bulk Send | Yes | Yes | Yes | Yes | Yes |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
| Envelope Cap | No cap | 100 envelopes/user/year | Varies | Varies | Varies |