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Commercial Lease Addendum

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COMMERCIAL LEASE ADDENDUM

This Commercial Lease Addendum (the Addendum) is made effective as of by and between Landlord Name: ("Landlord") and Tenant Name: ("Tenant"). This Addendum modifies the Commercial Lease dated (the Lease) for the premises located at (the Premises).

RECITALS

WHEREAS, Landlord and Tenant entered into the Lease referenced above on for the Premises; and

WHEREAS, the parties desire to amend certain terms of the Lease to reflect changes in the term, rent, and Tenant improvements as set forth below; and

WHEREAS, capitalized terms used in this Addendum that are defined in the Lease shall have the same meanings herein unless otherwise defined in this Addendum.

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

1. AMENDMENT TO TERM

The Term of the Lease is hereby amended. The Term shall now commence on and expire on unless earlier terminated in accordance with the Lease. All references to the Term in the Lease shall be deemed revised accordingly.

2. RENT ADJUSTMENT

Effective as of Tenant shall pay Base Rent in the amount of per month, payable in accordance with the Lease. All other monetary obligations, including Additional Rent, shall remain due as provided in the Lease except as explicitly modified by this Addendum.

3. SECURITY DEPOSIT

The Security Deposit required under the Lease is hereby amended to be . Tenant shall deliver any additional deposit required by this Addendum within days of the effective date of this Addendum. Landlord's rights with respect to the Security Deposit remain as set forth in the Lease.

4. TENANT IMPROVEMENTS; ALTERATIONS

Tenant shall be permitted to undertake the following improvements to the Premises subject to Landlord's prior written approval of plans and specifications and compliance with all applicable laws: Tenant improvements as described in the Tenant improvement allowance and scope below.

Tenant shall obtain all required permits and provide evidence of payment to contractors. Tenant shall indemnify and hold Landlord harmless from any mechanic's or materialmen's liens arising from Tenant's work, provided Tenant promptly bonds or releases any such lien at Tenant's expense in a commercially reasonable manner.

5. PERMITTED USE; COMPLIANCE

Tenant shall use the Premises only for and for no other purpose without Landlord's prior written consent. Tenant shall at all times comply with applicable laws, codes and ordinances and maintain required licenses and approvals for the Permitted Use.

6. UTILITIES; SERVICES

Tenant shall be responsible for all utilities and services supplied to the Premises, including but not limited to electricity, gas, water, sewer, telephone and internet, unless otherwise specified in writing. If any utilities are provided by Landlord, Tenant shall reimburse Landlord for Tenant's proportionate share as reasonably determined by Landlord.

7. INSURANCE; INDEMNITY

Tenant shall maintain commercial general liability insurance with limits not less than per occurrence and property insurance covering Tenant's personal property and leasehold improvements. Tenant shall name Landlord as an additional insured with respect to Tenant's liability policies where reasonably required by Landlord. Tenant shall defend, indemnify and hold Landlord harmless from and against all claims arising from Tenant's use of the Premises, except to the extent caused by Landlord's gross negligence or willful misconduct.

8. ASSIGNMENT AND SUBLETTING

The Lease provision regarding assignment and subletting is hereby amended as follows: Tenant shall not assign, transfer or sublet all or any part of the Premises without Landlord's prior written consent, which consent shall not be unreasonably withheld for assignments or subleases to an entity that meets Landlord's financial criteria. Any attempted assignment without such consent shall be voidable at Landlord's option.

9. DEFAULT; REMEDIES

Except as expressly modified herein, the Lease's default provisions remain in full force. If Tenant fails to cure any monetary default within days after written notice, or any non-monetary default within days after written notice (or such longer period as is reasonably required), Landlord may exercise all remedies available under the Lease and at law or in equity, including termination, damages and recovery of attorneys' fees and costs.

10. NOTICE ADDRESSES

11. MISCELLANEOUS PROVISIONS

Governing Law: This Addendum and the Lease shall be governed by and construed in accordance with the laws of the state in which the Premises are located without regard to conflict of law principles.

Entire Agreement: Except as expressly amended by this Addendum, the Lease remains unmodified and in full force and effect. This Addendum, together with the Lease, contains the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior oral and written agreements and understandings relating thereto.

Severability: If any provision of this Addendum is held invalid or unenforceable, the remaining provisions shall continue in full force and effect and the parties shall endeavor to replace the invalid or unenforceable provision with a valid provision that most closely approximates the economic effect and intent of the invalid provision.

Amendments; Waiver: No amendment, modification or waiver of any provision of this Addendum shall be effective unless in writing and signed by both parties. The waiver by either party of a breach of any provision shall not operate as a waiver of any subsequent breach.

Counterparts; Electronic Signatures: This Addendum may be executed in counterparts, each of which shall be deemed an original and all of which together shall constitute one and the same instrument. Signatures transmitted by electronic means (including facsimile or electronic signature) shall be binding for all purposes.

No Third-Party Beneficiaries: Except as expressly provided in the Lease, this Addendum is intended solely for the benefit of the parties hereto and not for any third party.

12. ADDITIONAL PROVISIONS

Landlord Name:

By:

Date:

Tenant Name:

By:

Date:

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What a Commercial Lease Addendum Is and When It Applies

A Commercial Lease Addendum is a written attachment to an existing commercial lease that modifies, clarifies, or supplements one or more lease provisions without replacing the entire agreement. Typical addenda cover changes to rent, term, permitted uses, maintenance responsibilities, signage, subleasing, or tenant improvements. The addendum is executed by the same parties who signed the base lease and becomes legally part of the lease once signed by authorized representatives and, where required, notarized or recorded according to local rules.

Why Use a Commercial Lease Addendum Instead of a New Lease

An addendum lets parties make targeted changes while preserving the remainder of the lease, reducing drafting time and legal cost. It creates a clear, written record of agreed changes and reduces ambiguity that can lead to disputes.

Why Use a Commercial Lease Addendum Instead of a New Lease

Who Typically Prepares and Signs a Commercial Lease Addendum

Landlords, property managers, commercial tenants, and real estate attorneys commonly prepare or request lease addenda when circumstances change during an active lease term.

  • Landlords and property managers: update rent, common area maintenance, or access rules after lease commencement.
  • Commercial tenants: request tenant improvement allowances, additional signage, or sublease permissions.
  • Legal and brokerage professionals: draft precise language to limit future disputes and ensure enforceability.

Final execution requires signatures from authorized representatives of each party; different corporate approvals may be necessary for entities.

Core Elements to Include in a Professional Addendum

A well-drafted addendum is concise but specific, cross-references the base lease, and clearly states whether it modifies, supersedes, or supplements existing provisions. It should identify affected lease sections and include execution details to avoid ambiguity.

Reference

Cite the original lease by date, parties, and lease section numbers so the addendum clearly attaches to that agreement.

Change Summary

Precisely state which terms are amended and the exact replacement language for those clauses to prevent interpretive disputes.

Effective Date

Specify when the amendment takes effect, whether retroactively or prospectively, and any conditions precedent to its effectiveness.

Duration

Note whether the change is permanent, temporary, or tied to a specific event such as completion of tenant work.

Signatures

Provide signature blocks for all required parties with printed names, titles, and dates so the addendum is fully executed.

Recording

State whether the addendum will be recorded or filed and who bears costs, where applicable for leasehold interests.

Required Information and Standard Fields

Parties: Full legal names
Premises: Street address
Base Lease Date: Original lease date
Amendment Text: Exact replacement
Effective Date: MM/DD/YYYY
Execution: Signatures and dates

Step-by-Step: Completing a Commercial Lease Addendum

Follow a simple sequence to prepare, review, and execute an addendum so changes are clear and enforceable.

  • 01
    Draft: Describe changes and reference the lease sections.
  • 02
    Review: Have counsel or broker confirm legal and commercial impact.
  • 03
    Authorize: Obtain required internal approvals before signing.
  • 04
    Execute: All parties sign, date, and notarize if required.

How to Configure an Online Signing Workflow

Set up a clear routing order and authentication level when sending an addendum electronically to ensure attribution and consent.

Field Configuration
Routing Order Sequential signers, 1→2
Signer Authentication Email plus SMS code
Required Fields Signature, date, printed name
Audit Trail Enable IP/time stamps

Digital Signing and eSubmission Requirements

Electronic execution works when the platform preserves intent, attribution, and a tamper-evident record consistent with ESIGN and UETA.

  • Authentication: Use email, SMS, or stronger methods
  • Audit Trail: Record IP, timestamps, and actions
  • Document Formats: Use PDF or DOCX for reliable rendering

Ensure your chosen vendor supports required compliance features such as audit trails and optional BAAs for regulated industries before sending documents.

Where to Send or File a Signed Addendum

Decide whether the addendum remains an internal contract record, is recorded with a county, or is distributed to third parties and then follow a consistent routing process.

  • Landlord: Provide fully executed copy to property management
  • Tenant: Send signed PDF to tenant contact
  • File: Record only if leasehold recording is required
  • Third Parties: Share with lenders or guarantors as needed

Timelines and Notice Periods to Consider

Some addenda change deadlines or trigger new notice windows; track effective dates, payment schedules, and any renewal or termination windows accurately.

Effective Date:

When the amendment begins, use MM/DD/YYYY

Payment Change Date:

Date rent or fees change per addendum

Notice Period:

Any new notice deadlines for termination or repairs

Renewal Deadlines:

Deadline to exercise renewal rights if amended

Recording Window:

If recording, verify county recording lead times

Common Mistakes When Preparing an Addendum

  • Failing to reference the original lease precisely, which can make the amendment ambiguous and lead to enforcement disputes.
  • Using vague language such as 'mutually agreed' without inserting the specific replacement clause or dollar amounts.
  • Not obtaining necessary corporate approvals or signatures from authorized signatories, which can render the addendum voidable.
  • Neglecting state or local recordation rules when the change affects a leasehold interest that must be disclosed publicly.

Risks and Consequences of an Incorrect Addendum

Unenforceable Terms: Ambiguous wording
Default Exposure: Unintended lease obligations
Tax Impact: Reporting or withholding errors
Recording Issues: Failure to protect leasehold rights
Disclosure Failures: Violations of state disclosure rules
Authority Gaps: Signers lacked power

Real-World Examples of Commercial Lease Addenda in Use

Two concise customer examples show typical scenarios where addenda solved commercial lease challenges.

Optica Ventures

Optica updated tenancy signage and permitted use to accommodate a new retail concept, ensuring compliance with local codes.

  • The change allowed extended retail hours.
  • The company reported smoother landlord approvals and fewer disputes because the addendum precisely replaced the prior use clause and documented responsibilities.

Martin Properties

A property manager amended the rent schedule to include temporary abatement during tenant improvement construction.

  • Abatement applied for 90 days.
  • The clear abatement terms preserved cash flow expectations, reduced tenant confusion, and avoided formal rent disputes during project completion.

Sample eSignature Vendor Comparison for Lease Addenda (signNow First)

Compare core pricing and feature markers for common eSignature providers. Plan details vary by tier; confirm vendor plans for production use.

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 plan Varies by plan Varies by plan Varies by plan
Bulk Send Yes (Premium) Varies by plan Varies by plan Varies by plan Varies by plan
Audit Trail Yes Varies by plan Varies by plan Varies by plan Varies by plan
HIPAA Compliant Yes (BAA available) Varies by plan Varies by plan Varies by plan Varies by plan

Frequently Asked Questions About Commercial Lease Addenda

Practical answers to common questions about validity, signing, notarization, and storage for commercial lease addenda.


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