Are electronic signatures valid?

Yes. Electronic signatures satisfy federal ESIGN standards (15 U.S.C. §7001) and are accepted in most states under UETA; exceptions such as wills and certain court orders may apply.

When is notarization required?

Notarization depends on the document type and state law; many deeds and acknowledgements require a notary. Check state notary rules before final execution.

How do I handle name mismatches?

Correct mismatched legal names before execution. If a signer uses an alias, attach documentation showing authority and update records to avoid enforceability issues.

What authentication level is appropriate?

Use email or SMS for routine approvals; require higher authentication (KBA or SSO) for financial, healthcare, or government-sensitive deliveries.

How long must I keep signed addenda?

Follow industry and federal rules: at least 3 years for tax records (IRC §6501(a)), 6 years for HIPAA (45 CFR §164.530(j)), and longer where state law mandates.

Can I amend an executed addendum?

Yes, but amend in writing and obtain signatures from the original authorized signatories; document effective date and attach signed amendment to the original file.

Project Delivery Addendum

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

PROJECT DELIVERY ADDENDUM

Project Identification

Project Title:

Project ID Client Name Service Provider Project Manager (Provider)

Effective Date of Addendum:

Recitals

This Project Delivery Addendum (the Addendum) modifies and supplements the terms of the underlying Agreement between Client Name: and Service Provider: . To the extent of any conflict between this Addendum and the Agreement, this Addendum shall control with respect to delivery, acceptance, milestones, and related payment terms as set forth below.

Scope of Delivery

Description of Delivered Items and Services Items Out of Scope

Deliverables and Acceptance

Delivery Method: Electronic delivery (secure transfer) Physical delivery (media or printed) On-site installation/delivery

Acceptance Testing Period: after receipt for each deliverable. The Client shall provide written notice of acceptance or rejection within the acceptance period. If Client provides no written notice within the acceptance period, the deliverable shall be deemed accepted.

Deliverable 1 — Description

Quantity: Due Date:

Acceptance Criteria Deliverable 2 — Description

Quantity: Due Date:

Acceptance Criteria

Timeline and Milestones

Project Start Date: Project End Date:

Milestone 1

Milestone 1 Due Date:

Milestone 2

Milestone 2 Due Date:

Budget, Payment and Invoicing

Total Agreed Price for Deliverables Covered by this Addendum: $

Payment Schedule Invoicing Terms

Retention / Holdback: (to be released upon final acceptance or as specified above)

Change Order Process

Acceptance, Remedies and Warranty

Acceptance Procedure: Provider shall deliver each deliverable accompanied by required documentation. Client may inspect and test delivered items during the Acceptance Testing Period. If Client reasonably determines a deliverable fails to materially conform with the agreed acceptance criteria, Client must provide written rejection specifying deficiencies. Provider shall, at Provider's expense, correct nonconformities within a commercially reasonable period. If Provider fails to correct nonconformities within that period, Client may either (a) accept a price reduction, (b) require re-performance by Provider, or (c) terminate the affected portion in accordance with the Agreement.

Warranty: Provider warrants that delivered goods and services will conform to the specifications and Acceptance Criteria for a period of from date of acceptance. Remedies for breach of warranty shall be limited to repair, replacement, or re-performance at Provider's expense.

Confidentiality

All materials, documentation, and information exchanged in connection with the deliveries under this Addendum shall be treated as Confidential Information in accordance with the confidentiality provisions of the Agreement. Provider shall not disclose Client data except as required to perform the deliverables and shall maintain appropriate safeguards to protect such data.

Liability, Indemnity and Governing Law

Indemnity: Each party shall indemnify, defend and hold harmless the other party from and against claims arising from its breach of this Addendum or the underlying Agreement, subject to the terms and limitations set forth in the Agreement.

Limitation of Liability: Except as expressly provided in this Addendum or the Agreement, neither party shall be liable for incidental, consequential, or punitive damages arising from the delivery or use of the deliverables, subject to any mandatory limitations of law.

Governing Law: This Addendum shall be governed by the laws of the state of , without regard to conflict of laws principles, except where the Agreement provides otherwise.

Miscellaneous

Entire Agreement: Except as expressly modified herein, the Agreement remains in full force and effect. This Addendum and the Agreement constitute the entire agreement between the parties with respect to the subject matter hereof.

Amendment: Any amendment to this Addendum must be in writing and signed by authorized representatives of both parties.

Additional Provisions / Notes

Client:

By:

Title:

Date:

Service Provider:

By:

Title:

Date:

What the Project Delivery Addendum Is and when it applies

A Project Delivery Addendum is a contract attachment that records delivery milestones, acceptance criteria, responsibilities, and any project-specific amendments to a primary agreement. It clarifies who delivers which materials or services, when delivery is due, how acceptance or inspection is performed, and the remedies for nonconforming delivery. Organizations attach this addendum to purchase orders, construction contracts, service agreements, or software delivery schedules to reduce disputes and create an auditable record of delivery terms that governs project handover and payment triggers.

Why a clear delivery addendum matters for project outcomes

A well-drafted Project Delivery Addendum reduces ambiguity around scope, timelines, and acceptance, protecting both parties and supporting on-time payments and compliance.

Typical teams and roles that complete this addendum

Relevant stakeholders often include procurement, project management, legal, and vendor operations who need a clear delivery record.

Construction project managers and contractors who coordinate staged deliveries and lien waiver attachments.
Owners, clients, and procurement teams who require acceptance criteria and payment triggers tied to milestones.
Legal, contract administrators, and compliance teams who track obligations and change-order processes.

Use consistent templates and signatory procedures so the addendum aligns with the master contract and is enforceable.

Core elements to include in a professional Project Delivery Addendum

A comprehensive addendum organizes delivery terms into discrete sections so responsibilities, timelines, payment triggers, and dispute processes are explicit and measurable.

Scope of Work

Define delivered goods or services precisely, reference contract exhibits, and list itemized deliverables with part numbers or specifications to avoid ambiguity and inspection disputes.

Delivery Schedule

Include firm delivery dates, phased milestones, and allowable date tolerances; indicate time-of-day, delivery location, and requirements for partial deliveries or backorders.

Acceptance Criteria

Specify inspection procedures, timeframes for acceptance or rejection, performance tests, and criteria for corrective actions that determine when a deliverable is deemed accepted.

Payment Terms

Tie payments to accepted milestones, state invoicing requirements, include retainage or holdback terms, and describe required documentation for payment submission.

Change Orders

Describe how scope changes are submitted, approved, priced, and scheduled; require signed change orders and define delay or cost-sharing mechanics.

Liability & Remedies

Set limits of liability, warranty periods, remedies for late or defective delivery, and any required insurance or indemnity language tied to the primary agreement.

Step-by-step: completing and executing the addendum

Follow these sequential actions to prepare, approve, and finalize the Project Delivery Addendum with clarity and auditability.

01

Drafting: Populate scope, milestones, and payment triggers from the master contract.
02

Internal Review: Have legal and procurement confirm liability and change-order language.
03

Signatory Assignment: Identify authorized signers and any required witnesses or notary.
04

Execution & Distribution: Obtain signatures, record execution date, and circulate copies to stakeholders.

How delivery addendum execution typically flows

A predictable workflow reduces signer friction and preserves the audit trail for acceptance and payment.

Prepare addendum: Attach exhibits, item lists, schedules, and acceptance tests to the addendum.
Assign signers: Add party emails, designate signing order, and set authentication level as needed.
Send for signature: Issue the document for signature with clear instructions and deadline for response.
Record executed copy: Store final signed PDF and capture audit trail details for compliance.

Configuring a digital workflow for the addendum

Map each workflow step to a platform setting so routing, authentication, and storage occur without manual intervention.

Field	Configuration
Template	Create reusable addendum template with locked clauses and editable fields.
Signer Order	Set sequential or parallel signing as contractually required.
Authentication	Choose email, SMS code, or knowledge-based verification where appropriate.
Retention	Configure final signed document storage and access permissions.

Technical requirements for eSubmission and integration

Ensure the chosen eSignature platform supports the integration, authentication, and retention needs of your addendum.

Integrations: Salesforce, NetSuite, Google Workspace, and other systems.
File formats: PDF and DOCX support for editable templates.
Authentication: Email, SMS, KBA, and SSO where needed.

Confirm platform encryption, audit trail detail, and access controls meet contract and regulatory requirements before use.

Common timing elements and deadlines to include

Define clear timeframes for each action so parties know when inspections, corrections, and payments must occur.

Milestone execution:

Specify acceptance window (e.g., 10 business days) after delivery for inspection.

Correction period:

Allow a defined cure period (e.g., 15 business days) for defective deliveries.

Payment timing:

State payment due within X days after accepted milestone and invoice receipt.

Change-order response:

Require written approval or rejection within a set number of days.

Recordkeeping:

Retain executed addendum and attachments per company policy and law.

Key milestones from agreement to project handover

Track milestones as a sequential checklist from drafting through final closeout to maintain clarity and progress control.

01

Draft and Attach Exhibits

Prepare addendum and attach required specifications and schedules.

02

Internal Approvals

Obtain sign-off from legal, procurement, and project management.

03

Signatures Collected

Execute with authorized signatories and capture audit trail.

04

Handover & Closeout

Complete acceptance, finalize payments, and archive executed documents.

Frequent preparation errors to avoid

Using vague deliverable descriptions that leave acceptance criteria open to interpretation and cause disputes.
Failing to match party legal names across documents, which can create enforceability and billing problems.
Not linking payment triggers to completed, accepted milestones, resulting in payment delays or contested invoices.
Omitting required exhibits or technical specifications, forcing rework and extensions to the delivery schedule.

Consequences of incomplete or incorrect addenda

Contract disputes: Increased litigation risk and remedial costs

Payment delays: Withheld or disputed invoices and cashflow impact

Regulatory exposure: Noncompliance with industry rules where applicable

Tax penalties: Incorrect reporting may trigger IRC §6721 fines

I-9 errors: Paperwork violations $281–$2,789 per violation

Backup withholding: 24% withholding for missing/incorrect TINs

Real-world examples of delivery addendum use

These concise examples show how organizations use a delivery addendum to streamline execution and preserve compliance.

Martin Properties — Handover

Martin Properties standardized delivery addenda for lease-related handovers to reduce disputes.

Faster tenant move-ins reduced coordination time.
I can process and execute all of these documents online with 100% compliance and built-in security, enabling on-time closings and consistent recordkeeping, according to the company founder.

BIS — Compliance Focus

BIS attached delivery addenda to service contracts to document acceptance tests.

Tight acceptance criteria reduced rework.
The CEO noted confidence in vendor selection and audit readiness due to reliable records and SOC 2–aligned controls.

Comparing eSignature pricing and capabilities for delivery addenda workflows

Pricing and feature availability vary by vendor and plan. The table below summarizes starting prices and selected capabilities relevant to high-volume delivery addendum workflows.

	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 card	Varies	Varies	Varies	Varies
Bulk Send	Yes	Yes	Yes	Yes	No
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No

Security and compliance controls to consider

Encryption in transit: TLS 1.2/1.3

Encryption at rest: AES-256 encrypted storage

Audit logging: Complete timestamped audit trails

Certifications: SOC 2 Type II and ISO 27001

Regulatory support: ESIGN, UETA, 21 CFR Part 11 compliance

HIPAA readiness: BAA available where required

Frequently asked questions when preparing a delivery addendum

Answers to common questions about validity, signing, notarization, retention, and corrections when using a Project Delivery Addendum.

Need help? Contact support

Are electronic signatures valid?
Yes. Electronic signatures satisfy federal ESIGN standards (15 U.S.C. §7001) and are accepted in most states under UETA; exceptions such as wills and certain court orders may apply.
When is notarization required?
Notarization depends on the document type and state law; many deeds and acknowledgements require a notary. Check state notary rules before final execution.
How do I handle name mismatches?
Correct mismatched legal names before execution. If a signer uses an alias, attach documentation showing authority and update records to avoid enforceability issues.
What authentication level is appropriate?
Use email or SMS for routine approvals; require higher authentication (KBA or SSO) for financial, healthcare, or government-sensitive deliveries.
How long must I keep signed addenda?
Follow industry and federal rules: at least 3 years for tax records (IRC §6501(a)), 6 years for HIPAA (45 CFR §164.530(j)), and longer where state law mandates.
Can I amend an executed addendum?
Yes, but amend in writing and obtain signatures from the original authorized signatories; document effective date and attach signed amendment to the original file.

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