Can this addendum be signed electronically?

Yes. Electronic signatures meet the ESIGN Act standard (15 U.S.C. §7001) and most state UETA statutes when intent, consent, attribution, and record retention are demonstrable.

When is notarization required?

Notarization depends on the state and the document type; for deeds and certain powers of attorney states typically require notarization. Check the applicable state statute or notary commission.

Do witness requirements vary by state?

Yes. Witness counts and requirements vary for certain instruments; for example, Florida may require two witnesses for some recordable documents while other states require none.

What if a signer lacks authority?

If authority is absent the signature can be challenged; confirm board resolutions or officer delegations in advance and include an authority representation clause in the addendum.

How should confidential materials be handled?

Limit disclosure to defined categories, require a confidentiality regime, use privilege logs for privileged items, and consider a BAA when exchanging protected health information.

How long must signed addenda be retained?

Retention follows the longest applicable requirement: IRS records at least 3 years (IRC §6501(a)), HIPAA six years (45 CFR §164.530(j)), and industry-specific rules may extend retention.

Electronic Signature
Templates
Legal
Legal Due Diligence Addendum

Legal Due Diligence Addendum

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

LEGAL DUE DILIGENCE ADDENDUM

This Legal Due Diligence Addendum (the "Addendum") is made effective as of by and between Party A Name: ("Requester"), and Party B Name: ("Provider"). Requester and Provider are each a "Party" and collectively the "Parties."

RECITALS

WHEREAS, Requester is conducting due diligence in connection with its evaluation of a potential business transaction involving Provider; and

WHEREAS, the Parties desire to set forth the terms and procedures by which Provider will make available certain documents, records and information to Requester for the purpose of legal review and compliance assessment; and

WHEREAS, the Parties desire to allocate responsibilities, confidentiality obligations, timing and remedies with respect to such due diligence.

NOW, THEREFORE

In consideration of the mutual covenants contained in this Addendum and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows:

1. DEFINITIONS

For purposes of this Addendum, "Confidential Information" means all non-public information disclosed by Provider to Requester in connection with the due diligence, including but not limited to contracts, corporate governance documents, regulatory filings, litigation materials, intellectual property records, tax records, and employee information.

2. SCOPE OF DOCUMENT PRODUCTION

Provider shall make available to Requester the documents and categories of information checked below and any additional items reasonably requested in writing by Requester within the Due Diligence Period. The Parties acknowledge that the listed items are representative and not exhaustive.

Document Categories (check all that apply):

Financial statements and accounting records

Material contracts and amendments

Pending or threatened litigation and correspondence

Intellectual property registrations and related documentation

Regulatory filings, permits and compliance records

Employment agreements, benefit plans and related disputes

Additional documents or specifications:

3. DUE DILIGENCE PERIOD AND DELIVERY

The due diligence production shall commence on and shall be substantially completed by (the "Due Diligence Period"), subject to reasonable accommodation for follow-up requests.

Delivery method (select): Electronic production (secure portal) Physical delivery of hard copies

4. ACCESS, REVIEW AND COOPERATION

Provider shall designate a primary liaison to coordinate production and access. Liaison name: , Telephone: , Email: .

Provider shall use commercially reasonable efforts to cooperate with Requester and its advisors, permit on-site review where appropriate, and provide timely responses to reasonable follow-up questions. Access hours and location, if in person:

5. CONFIDENTIALITY AND USE

All Confidential Information provided under this Addendum shall be used solely for the purposes of Requester's evaluation and shall be maintained in confidence in accordance with the terms set forth in any existing confidentiality agreement between the Parties or, if none exists, in accordance with the following standards: Requester shall restrict access to Confidential Information to employees, affiliates, agents and advisors who have a need to know and who are bound by confidentiality obligations no less protective than those in this Addendum.

If Requester receives a subpoena, court order, or other legal compulsion to disclose Confidential Information, Requester shall (to the extent permitted) provide prompt written notice to Provider and cooperate in seeking a protective order or other remedy.

6. REPRESENTATIONS; NO WAIVER; NO RELIANCE

Provider represents that to the best of its knowledge the documents produced are accurate and complete as of their date. Except as expressly set forth in any definitive agreement ultimately executed by the Parties, Provider makes no representation or warranty, express or implied, concerning the sufficiency, completeness or fitness for a particular purpose of the provided materials. Requester acknowledges that it is not relying solely on the production for any determinations without independent verification.

7. INDEMNIFICATION

Each Party shall indemnify, defend and hold harmless the other Party from and against any losses, liabilities, claims, damages and costs (including reasonable attorneys' fees) arising from a breach of this Addendum, including unauthorized disclosure of Confidential Information by such Party or its representatives, except to the extent resulting from the indemnitee's gross negligence or willful misconduct.

8. LIMITATION OF LIABILITY

EXCEPT FOR LIABILITY RESULTING FROM GROSS NEGLIGENCE, WILLFUL MISCONDUCT OR INDEMNIFICATION OBLIGATIONS HEREUNDER, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR CONSEQUENTIAL, INCIDENTAL, INDIRECT, OR PUNITIVE DAMAGES ARISING OUT OF THE DUE DILIGENCE PROCESS.

9. SURVIVAL

The confidentiality, indemnification and limitation of liability provisions of this Addendum shall survive the expiration or termination of the Due Diligence Period for a period of three (3) years following the date of termination, unless a longer survivorship period is required by applicable law, in which case such longer period shall apply.

10. NOTICES

All notices required or permitted under this Addendum shall be in writing and delivered to the addresses set forth below (or to such other address as a Party may designate by notice in accordance with this Section). Notices shall be deemed given upon personal delivery, one (1) business day after delivery to an overnight courier, or three (3) business days after deposit in the mail, postage prepaid.

Requester Notice Address Requester Contact Provider Notice Address Provider Contact

11. AMENDMENTS; COUNTERPARTS; WAIVER

This Addendum may be amended only by a written instrument executed by both Parties. Any failure or delay by a Party to exercise any right or remedy shall not constitute a waiver of such right or remedy. This Addendum may be executed in counterparts, each of which shall be an original and all of which together shall constitute one and the same instrument.

12. GOVERNING LAW; ENTIRE AGREEMENT; SEVERABILITY

This Addendum shall be governed by and construed in accordance with the laws of the state specified by the Parties below without regard to conflict of law principles. Governing law state: .

This Addendum, together with any existing confidentiality agreement or engagement letter between the Parties referenced herein, constitutes the entire agreement between the Parties with respect to the subject matter hereof and supersedes all prior and contemporaneous understandings and agreements, whether written or oral, relating thereto. If any provision of this Addendum is held to be invalid or unenforceable, the remaining provisions shall remain in full force and effect.

MISCELLANEOUS PROVISIONS

The Parties acknowledge that nothing in this Addendum constitutes an obligation to enter into any further agreement or to consummate any transaction. The obligations of the Parties under this Addendum are subject to the execution of any definitive transaction documents, if applicable.

Each Party represents and warrants that it has full authority to enter into this Addendum and that the person signing below on its behalf is duly authorized to bind such Party.

Requester:

By:

Date:

Provider:

By:

Date:

What the Legal Due Diligence Addendum Is and when it's used

A Legal Due Diligence Addendum is an attachment to a purchase agreement or transaction document that defines the scope, timing, and method for conducting due diligence. It lists required documents, access procedures, exceptions, confidentiality obligations, survival of representations, and signature blocks so parties know what must be produced and when. Typical uses include M&A, asset sales, real estate closings, and investor financing where a clear, written protocol reduces ambiguity and preserves remedies if critical information is withheld or late.

Why include a Due Diligence Addendum in a transaction

A clear addendum limits dispute risk by documenting what information will be exchanged, how access is granted, and which representations survive closing. It reduces ambiguity about document lists, deadlines, confidentiality controls, and remedies. Using a compliant eSignature platform such as signNow supports secure, auditable execution and consistent retention of the signed addendum.

Who typically prepares and relies on this addendum

The addendum is prepared by deal teams to coordinate document delivery, confidentiality, and review schedules across internal and external parties.

Corporate counsel and M&A teams coordinating requests and deadlines during transaction review.
Buyers, private equity investors, and their financial advisors who require document lists and access windows.
Sellers, in-house counsel, and brokers responsible for assembling disclosures and managing privileged material.

Final circulation normally goes to signatories, outside counsel, data room administrators, and closing agents so each party has the same execution record.

Primary signers and their roles

Authorized Officer

An authorized officer of the buyer or seller signs to bind the entity. This person must have corporate authority under bylaws or an existing board resolution; otherwise, signature validity can be challenged and closing delayed.

External Counsel

Outside counsel commonly signs or acknowledges delivery of documents and confidentiality obligations. Counsel's involvement helps ensure privilege handling, proper redactions, and that representations are stated in enforceable language.

Essential data fields to include

Parties' legal names: Full legal entity name

Effective date: MM/DD/YYYY format

Document list: Exhibit or schedule reference

Access instructions: Data room URL or contact

Confidentiality terms: Scope and exceptions

Signature blocks: Name, title, date

Core components a professional addendum should contain

A well-drafted addendum organizes the review process, assigns responsibilities, and protects confidential information while identifying exceptions, timing, and remedies. Each component below should be explicit, measurable, and linked to exhibits or schedules where appropriate.

Scope of review

Define precisely which business units, asset classes, contracts, and date ranges are included to avoid overbroad requests that increase cost and delay review.

Document inventory

Attach or reference a schedule listing required documents, with version control, preferred formats, and any redaction standards to ensure consistent disclosure.

Access and timing

Set data room access mechanics, delivery deadlines, response times to questions, and time windows for supplemental materials to keep the diligence period on schedule.

Representations and exceptions

Require target representations tied to delivered materials and specify how exceptions are logged, negotiated, and treated at closing or post-closing.

Confidentiality protections

Prescribe confidentiality measures, permitted disclosures, return or destruction obligations, and carve-outs for privileged information or regulatory obligations.

Execution and survival

State signature requirements, whether the addendum survives closing, applicable governing law, and remedies for material nondelivery or misrepresentation.

Step-by-step: completing the addendum

Follow this concise sequence to prepare, circulate, and finalize a Legal Due Diligence Addendum so the review process is auditable and enforceable.

01

Draft: Assemble scope, schedules, and confidentiality terms.
02

Attach exhibits: Reference document lists and templates.
03

Circulate: Share with parties and counsel for review.
04

Execute: Obtain authorized signatures and retain audit trail.

Online workflow settings to configure before sending

Set up authentication, field behavior, and retention before you send the addendum to ensure compliance and a clean audit trail.

Field	Configuration
Authentication	Email link \| SMS code optional
Field Types	Text, date, initials, conditional fields
Bulk Send	Enable when multiple recipients require identical addenda
Retention	Export PDF/A and retain audit trail

Where to send the completed addendum and next steps

After execution, route the signed addendum to all stakeholders and record it in transaction repositories to maintain a single source of truth.

Counsel: Send final signed PDF to outside counsel for closing files.
Data room: Upload executed addendum to the due diligence repository.
Closing agent: Provide signature set to escrow or closing agent as required.
Records: Archive in transaction binder and corporate records system.

Technical considerations for secure e-execution

Choose a platform that supports common file formats, strong encryption, and an auditable signature trail before circulation.

File formats: PDF, DOCX supported
Integrations: Salesforce, NetSuite, Google Workspace
Security: TLS in transit, AES-256 at rest

Common deadlines and timeline expectations

Document the key dates to prevent missed obligations and to enforce remedy provisions if deadlines are missed.

Start of diligence:

Begin on the Effective Date listed in the addendum.

Document delivery deadline:

Specify exact date for required document upload.

Objection period:

Set number of days to raise issues after delivery.

Closing date:

Coordinate addendum obligations to be satisfied before closing.

Record retention start:

Retention begins on the Effective Date or closing date.

Key milestones from issuance to archive

Track milestone completion with dates and responsible parties so progress is visible and disputes over timing are minimized.

01

Issue Addendum

Sender posts addendum and document list to data room.

02

Access Granted

Recipients receive credentials and start review period.

03

Review Completed

Objections logged and exceptions negotiated.

04

Execute & Archive

Signed copies routed to closing binder and records.

Common mistakes to avoid when preparing the addendum

Listing vague or catch-all document categories instead of specific exhibits that counsel can reliably locate and produce.
Failing to specify time zone or exact time for deadlines, causing inadvertent late deliveries across jurisdictions.
Allowing unauthorized signers to execute the addendum without confirming board or escrow authority in writing.
Neglecting confidentiality carve-outs for privileged material, leading to inadvertent privilege waiver disputes during production.

Principal risks and legal consequences

Breach of warranty: Contractual damages and indemnity

Tax exposure: IRS adjustments or penalties

Privacy violation: HIPAA fines; 45 CFR §164.530(j)

Invalid signature: ESIGN exceptions may void consent

I-9 errors: Penalties per DHS rules

Record retention: Failure to retain triggers audit risk

Common eSignature vendor pricing and capability comparison

Compare vendor pricing and core capabilities relevant for executing Legal Due Diligence Addenda; signNow is listed first for direct comparison.

	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	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

Real-world examples of using an addendum in transactions

Practical examples show how teams structure disclosure, confidentiality, and execution to reduce closing friction and preserve remedies.

Optica Ventures LLC — Brian Fitzgibbons

During an asset sale the addendum listed required contract exhibits and delivery deadlines to eliminate ambiguity.

This ensured each party knew which versions to produce.
The team reported simpler document assembly and clearer audit records for closing, reducing follow-up requests and last-minute disputes.

Martin Properties — Tim Martin

For a portfolio sale the addendum required title and lease abstracts be uploaded to a single data room.

That centralized review and avoided inconsistent versions.
As a result the parties completed diligence within the scheduled window and captured an auditable signature set for closing documentation.

Frequently asked questions about the Legal Due Diligence Addendum

Answers to common execution, enforceability, and practical questions about drafting, signing, and storing due diligence addenda.

Need help? Contact support

Can this addendum be signed electronically?
Yes. Electronic signatures meet the ESIGN Act standard (15 U.S.C. §7001) and most state UETA statutes when intent, consent, attribution, and record retention are demonstrable.
When is notarization required?
Notarization depends on the state and the document type; for deeds and certain powers of attorney states typically require notarization. Check the applicable state statute or notary commission.
Do witness requirements vary by state?
Yes. Witness counts and requirements vary for certain instruments; for example, Florida may require two witnesses for some recordable documents while other states require none.
What if a signer lacks authority?
If authority is absent the signature can be challenged; confirm board resolutions or officer delegations in advance and include an authority representation clause in the addendum.
How should confidential materials be handled?
Limit disclosure to defined categories, require a confidentiality regime, use privilege logs for privileged items, and consider a BAA when exchanging protected health information.
How long must signed addenda be retained?
Retention follows the longest applicable requirement: IRS records at least 3 years (IRC §6501(a)), HIPAA six years (45 CFR §164.530(j)), and industry-specific rules may extend retention.

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