Free Sublease Agreement Review

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Review your sublease agreement before signing. Fast, expert identification of liability issues, master lease conflicts, and term alignment problems.

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Key Takeaways

Verify the master lease permits subleasing

Understand you remain liable under the master lease

Ensure sublease terms don't exceed master lease

Review landlord approval requirements

1-2 minutes*

Average Review Time

160+ compliance points analyzed*

Compliance Checks

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* Estimates based on typical documents. Actual results vary by document type and complexity.

Justee's sublease agreement review tool analyzes subleasing contracts for master lease compliance, liability allocation, term alignment, and landlord approval requirements. The AI identifies risks including unauthorized subleasing, unclear liability allocation, sublease terms exceeding the master lease, and missing landlord consent. Justee provides suggested revisions based on real estate law standards. Sublease agreements allow tenants to rent their space to third parties while remaining liable under the master lease. They must comply with master lease restrictions and typically require landlord approval. Common issues include subleasing without permission, unclear responsibility for damages, and sublease terms that extend beyond the master lease.

How It Works

1

Upload Your Document

Upload your contract in PDF, DOCX, or TXT format

2

AI Analysis

Our AI reviews your document for compliance issues

3

Review Findings

Get detailed findings with risk ratings and legal citations

4

Take Action

Use our suggestions to improve your document

What We Check

Review master lease compliance

Analyze liability allocation

Check term alignment

Evaluate landlord approval

Identify prohibited uses

Common Risks We Identify

Unauthorized subleasing

Unclear liability

Term exceeds master lease

Missing landlord consent

Prohibited use clauses

Hypothetical Case Study by Justee

Justee recently analyzed their sublease agreement with the subtenant for a remote worker subleasing their apartment in Chicago, IL during a 6-month work assignment abroad.

Issue Found: The sublease term extended 2 months beyond the master lease end date, which would have automatically terminated the arrangement and left both parties without valid occupancy rights.

Justee Recommendation: We revised the sublease to end 30 days before the master lease, added provisions for early termination if the master lease ended early, and obtained written landlord consent.

Sublease Exceeds Master Lease

Problematic Language

"The term of this Sublease shall commence on March 1, 2026 and terminate on December 31, 2026."

Recommended Language

"The term of this Sublease shall commence on March 1, 2026 and terminate on October 31, 2026, which is 30 days prior to the termination of the Master Lease. In no event shall this Sublease extend beyond the Master Lease term."

Why it matters: A sublease cannot grant more rights than the original tenant possesses. Subleases extending past the master lease are void from the overrun date forward.

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"Justee is redefining the legal document compliance process across all practice areas, transforming hours of work into minutes, while reducing stress and boosting accuracy."

Artem Dolukhanyan
Artem Dolukhanyan

Partner, Corporate Transactions at Grayver Law Group

AI Review vs. Manual Review

FeatureJustee AI ReviewManual Review
Review Time2-5 minutes2-4 hours
CostFree trial available$150-500+
Legal CitationsAutomaticVaries by reviewer
Clause SuggestionsIncludedExtra fee
Availability24/7 instantBusiness hours
* Comparison data represents estimates based on industry research and internal testing for typical contract types. Review times, costs, and accuracy percentages vary by document complexity, length, jurisdiction, and specific legal requirements. See full disclaimer below.

Official Resources

HUD Rental Information

HUD rental assistance resources

FTC Consumer Leasing

FTC leasing regulations

HUD Subletting Guidelines

Federal sublease and assignment rules

Important Legal Disclaimer

Not Legal Advice: The information and analysis provided by Justee AI is for general informational purposes only and does not constitute legal advice. While we strive to provide accurate and helpful information, our AI-powered service is not a substitute for professional legal counsel.

No Attorney-Client Relationship: Use of Justee AI does not create an attorney-client relationship. Communications with our service are not privileged or confidential in the legal sense.

Consult a Professional: For specific legal matters, we strongly recommend consulting with a qualified attorney licensed in your jurisdiction. Legal requirements vary by location and circumstances, and only a licensed attorney can provide advice tailored to your specific situation.

Performance Estimates (*): All statistics, metrics, and numerical claims on this page — including review times, cost comparisons, accuracy percentages, and database size — are estimates based on internal testing, industry research, and typical use cases. Actual results vary based on document type, complexity, length, jurisdiction, and other factors. Cost comparisons reference publicly available average attorney rates and are not guaranteed savings. "1M+ laws and regulations" refers to the breadth of Justee's reference database and does not imply that every provision is checked against every law for every document.

By using our service, you acknowledge that you have read and agree to our Terms of Use and understand the limitations of AI-powered legal analysis. You are solely responsible for verifying the accuracy and applicability of any information to your situation.

Sublease Agreement Review FAQ

Usually yes. Most leases require written landlord consent for subleasing. Subleasing without permission can be lease violation.

Yes. Original tenants remain liable for rent and damages even with a sublease, unless the landlord agrees to a lease assignment.

You remain responsible for paying the landlord. You would need to pursue the subtenant separately for unpaid amounts.

No. The sublease cannot extend beyond your master lease term. Justee checks for this alignment.

Sublease: you remain liable. Assignment: new tenant takes over your lease completely (requires landlord approval).

Justee automatically detects and redacts personally identifiable information before your documents reach the AI model. Protected types include:

Personal data:
  • Names, email addresses, and phone numbers
  • Social Security numbers and tax identifiers (ITIN)
  • Physical addresses and dates of birth
  • Credit card and bank account numbers
  • Driver's license and passport numbers
  • Medical provider identifiers (NPI) and case numbers
Corporate and business data:
  • Company and organization names
  • Business addresses and geographic locations
  • SWIFT/BIC codes, IBAN numbers, and bank routing numbers
  • Business license numbers and attorney bar IDs
  • Corporate tax identifiers (EIN)
Our system achieves 100% detection of standard PII types and approximately 97% overall coverage. Certain rare identifiers — such as cryptocurrency wallet addresses and MAC addresses — may not be detected automatically. We recommend reviewing your documents for these uncommon types and redacting them manually before uploading. See our Privacy Policy and Terms of Use for details and limitations.

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Last updated: May 13, 2026

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