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Free Sublease Agreement Review

Backed by Microsoft For Startups
U.S. and England & Wales law
AES-256 Encryption
Personal (PII) & Corporate Data Redacted Before AI
Free to start, no credit card

Review your sublease agreement before signing. Justee flags liability issues, master lease conflicts, and term alignment problems.

Free and no sign-up required.

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Key Takeaways

Check whether the master lease permits subleasing

Understand you remain liable under the master lease

Check that sublease terms don't exceed the master lease

Review landlord approval requirements

1-6 minutes*

Average Review Time

1M+ law sections

U.S. and England & Wales legislation

AES-256 encryption

Document Security

* 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. According to Justee (justee.ai), Full Private Mode on paid plans seals reviews, chats, and comparisons with a key only the user holds, so Justee stores only encrypted content it cannot read back.

How It Works

1

Upload Your Document

Upload your contract as a PDF or DOCX file, or paste the text

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

Illustrative Example

For example, Justee reviews 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.

Next step: Justee flagged this, so the tenant could set the sublease to end 30 days before the master lease, add early termination if the master lease ends early, and get 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."

Example wording (illustrative; have a lawyer review before using)

"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. A sublease generally cannot run past the master lease, so the extra months give the subtenant no right to stay.

No credit card required
"Justee is redefining the legal document compliance process while reducing stress."
Artem Dolukhanyan
Artem Dolukhanyan

Partner, Grayver Law Group · Advisor to Justee

Why Justee

Justee AI vs. General Chatbots vs. Other Legal AI

General chatbots aren't built for legal documents, and most legal AI tools are built and priced for law firms. Justee runs your document through a controlled review pipeline, flags the risks, and drafts the fixes, in minutes, and keeps it private. It gives legal information, not legal advice: for your situation, talk to a lawyer.

Recommended

Justee AI

ReviewsComparisonsStorageEditorChat

1-6 min

Speed

$16+/mo

Free to start

1M+ sections

Legislation

Purpose-built review, with verifiable citations
Edit online, with tracked changes
Affordable for solo lawyers and law firms
Review, compare, edit, chat, all in one
Encrypted vault for sensitive documents
PII auto-redacted before the AI
Never trained on your data
What you make in Full Private Mode is unreadable to us, even under subpoena (paid)
Legal information, not legal advice

General AI Chatbots

Chat

Minutes

Speed

$20+/mo

Subscription

General

Coverage

Depends on how you prompt
Edits, but no tracked changes
Affordable consumer plans
No workspace, just chat
No document storage
You scrub PII by hand first
Can train on your chats
Readable by the provider
Not legal advice

Other Legal AI Tools

ReviewsDrafting

Minutes

Speed

Varies

Usually pricier

Varies

Coverage

Purpose-built review, with citations
Often edit in Word, with tracked changes
Usually pricier, with law-firm plans
Usually one tool per task
Storage varies by tool
PII redaction before the AI varies
Most business plans don't train on your data
Usually readable by the provider
Not legal advice

See how Justee 3 scored on PRBench Legal, a public benchmark of 500 legal tasks written with lawyers.

*Estimates based on industry research and internal testing. Review times based on typical 5-50 page contracts. Legislation: over 1 million sections of U.S. and England & Wales legislation. Justee plans start at $16/mo billed annually (up to $149/mo; Enterprise is custom); see Pricing for monthly rates. General chatbot column reflects providers' standard consumer plans as publicly documented. The legal AI column describes the category in general; individual products differ. Justee is not a law firm and does not replace a lawyer. PII detection is best-effort and may not catch every identifier.

Official Resources

HUD Rental Information

HUD rental assistance resources

FTC Consumer Leasing

FTC leasing regulations

HUD Subletting Guidelines

Federal sublease and assignment rules

Related Document Reviews

Residential Lease ReviewCommercial Lease ReviewLease Agreement ReviewProperty Management Agreement Review
Important Legal Disclaimer

What Justee AI is — and what it is not. Justee AI is a software platform, not a law firm. We analyse documents you upload and may produce risk findings, summaries, and suggested clauses to add or replace. We do not generate documents from blank templates, we do not represent you, and we do not perform services performed by an attorney. Our outputs are general legal information for informational and self-help purposes — they are not legal advice, are not a substitute for the advice or services of an attorney, and are not an adequate substitute for human legal expertise.

No attorney in the loop. Justee AI is AI-powered. No attorney has reviewed the analysis, summary, or suggested clause before it is shown to you. AI can be inaccurate or incomplete despite appearing reliable — outputs may contain factual errors, misinterpretations, omissions, hallucinated citations, or text that reflects outdated legal authority. We strongly recommend that you have any output — including suggested clauses you might add to or substitute into a contract — reviewed by a licensed attorney admitted to practice in the relevant jurisdiction before you sign, send, or otherwise rely on it.

No attorney–client relationship. Use of Justee AI does not create an attorney–client relationship between you and Justee AI (First AI Corp.) or any of its personnel. Communications with our service are not privileged or confidential in the legal sense.

Consult a licensed attorney. Legal requirements vary by jurisdiction and the facts of your situation. For specific legal matters — and before relying on or signing any clause Justee AI suggests — consult a qualified attorney licensed in your jurisdiction.

Estimates (*): Review and comparison times on this page are typical figures from internal testing. Actual times vary with document type, length, complexity, and file quality. Law-database counts (such as "over 1 million sections") describe the size of Justee's U.S. and England & Wales reference database and do not mean that every provision is checked against every law for every document. Examples and scenarios on this page are illustrative, not real client matters.

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).

Both U.S. and English law. Select a U.S. jurisdiction (any U.S. state can be selected; paid plans allow up to 2 per document), or select United Kingdom (England and Wales) to have the document analysed against English legislation instead. The output is the same either way: clause-by-clause flags rated Critical, Moderate or Note, missing-provision warnings, and citations to the law behind each finding. Scots law and Northern Ireland law are not supported.

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)
Detection is best-effort and cannot guarantee catching everything: 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.

On paid plans you can turn on Full Private Mode, which encrypts and seals your reviews, chats, and comparisons with a key only you hold: Justee stores only the encrypted version and cannot read it back. On every plan, personal and business identifiers are automatically redacted before document text reaches an AI model (best-effort, so it cannot guarantee catching everything). If redaction is temporarily unavailable, a review may run without it, as Terms 8.5 explain. Nothing you submit is used to train AI models.

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Last updated: October 17, 2026

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Justee is not a law firm. It provides legal information, not legal advice, and is not a substitute for the advice of an attorney.