How to Write a Sublet Agreement

A sublet can help you keep your lease when life changes, but a handshake won't protect you. A clear sublet agreement connects the new occupant to the right rules while you remain responsible to the landlord. Use these steps to get approval, set fair terms, attach the master lease, and check for risk before anyone moves in.

Step 1: Check the Master Lease and Get Written Approval

Your first job is to read the master lease, which is the lease you signed with the landlord. Look for sections titled “subletting,” “assignment,” “occupancy,” “consent,” or “additional occupants.” These clauses may ban subletting, limit it, or set a process for requesting permission.

Do this before you advertise the room or accept money. An approved subtenant can still create risk for you, but an unauthorized sublet may put you in direct breach of the lease. The landlord may also want to review the proposed occupant before giving consent.

Send a written request that includes the person’s name, planned move-in date, expected end date, and contact details. Explain whether the subtenant will rent the whole home or only part of it. Ask the landlord to confirm approval in writing. Keep the email, letter, or signed consent with your lease file.

Rules vary by state and by lease. That small sample does not prove other states have no rules. It shows why you should check your state law before signing.

If your lease has an unclear addendum about occupants or fees, review it closely before you ask for approval. A guide to what a lease addendum changes can help you spot terms that sit outside the main lease.

LeaseGuard AI can scan the master lease for sublet limits, approval language, added fees, and clauses that shift risk to you. LeaseGuard AI provides informational analysis only; it is not a law firm.

Step 2: Choose a Subtenant and Agree on Rent and Deposits

A sublet agreement should name a real person who can meet the terms. Treat the choice like a risk check, not a quick way to fill an empty room.

Ask the applicant for information that fits your master lease and local law. That may include proof of income, rental references, identification, or permission for a lawful screening check. Apply the same screening process to each applicant. Don't ask questions about protected traits, and don't make promises the landlord must approve.

Set the rent in writing. State the exact amount, due date, payment method, late-fee rule, and what happens after a missed payment. If the subtenant pays you, you still need to pay the landlord under the master lease. Their payment does not remove your duty to the landlord.

Check the master lease before setting rent above your own rent. Some leases address excess rent or require the tenant to share part of it with the landlord. The terms of a commercial sublet are usually negotiated between the tenant and subtenant, but the master lease can control what happens to extra rent. Don't assume you can keep every dollar above your monthly obligation.

Write down who pays utilities, internet, parking, storage, cleaning, and other shared costs. Use a simple split when possible. For example, the agreement might say the subtenant pays a fixed monthly utility share, with a copy of the bill available on request.

Handle the security deposit with equal care. State the amount, who holds it, the allowed deductions, and when the subtenant should receive an itemized statement or refund. Decide whether the subtenant pays you a new deposit or reimburses part of the deposit you already paid the landlord. Don't promise a refund date that conflicts with state law or the master lease.

For renters sharing a home, the risks often overlap with roommate terms. A review of roommate lease agreement review tools can help you compare how payment duties and shared-space rules are written.

Step 3: Draft the Essential Terms and Attach the Master Lease

A useful sublet agreement makes the deal easy to check. Start with the full legal names of the original tenant and subtenant. Add current contact details for both people, plus the landlord's name and address when the master lease provides them.

Describe the space with its full address. If you are subletting one bedroom, identify that bedroom and list the shared areas the subtenant may use. State whether furniture, parking, storage, appliances, or outdoor areas are included.

Set the lease term with a start date and end date. Avoid an open-ended term unless the master lease and local law allow it. A sublease should not run past the master lease unless the landlord agrees to a different arrangement in writing.

List the money terms in one place:

• Monthly rent and the date it is due.
• Security deposit and the conditions for deductions.
• Utilities, services, and shared costs.
• Late fees, returned-payment fees, and other charges.
• Any rent credit, furniture fee, or agreed reimbursement.

Then describe the rules that affect daily use. Cover guests, pets, smoking, noise, parking, repairs, alterations, cleaning, keys, and access. If the subtenant may work from home or run a business, say so only if the master lease and landlord allow it.

State that the sublease is subordinate to the master lease. In plain terms, the subtenant must follow the parts of the original lease that apply to the space. Attach a complete copy of the master lease as an exhibit. Highlight any landlord rules that the subtenant must follow, but don't edit the attached lease without permission.

The agreement should also say what happens if the master lease ends early. Include a process for notices, serious violations, unpaid rent, damage, and move-out. The original tenant remains responsible to the landlord even when the subtenant causes the problem. Commercial leasing guidance often treats subletting as a contract issue tied closely to the original lease, which is why the master lease should be reviewed beside the new agreement. See the commercial leasing discussion of assignments and subletting for that distinction.

Finish with a full-agreement clause. It should say that the written document and attached exhibit contain the deal. If you and the subtenant discussed a key promise by text, add it to the agreement instead of relying on the message thread.

Step 4: Handle Inspections, Deposits, Notices, and Signatures

Before the subtenant moves in, walk through the space together. Record the condition of walls, floors, appliances, windows, locks, furniture, and fixtures. Take dated photos and attach an inventory if furniture is included. Both parties should receive a copy.

This record helps separate old damage from new damage. It also gives you a fair basis for a deposit claim. Don't use the deposit as the last month's rent unless the written agreement and applicable law clearly allow it.

Write the notice method into the agreement. Include each party's email and mailing address, then state when a notice counts as received. For serious issues, local law may require a specific notice period or delivery method. A text message alone may not meet that rule.

Set a move-out process before the tenancy starts. Say how much notice the subtenant must give, where keys go, when the inspection happens, and how unpaid bills or damage are handled. The end of the sublet does not automatically end your duties under the master lease.

Electronic signatures can work when everyone agrees to use them. A standard e-signature workflow lets you upload the document, add fields, send it to each signer, and keep the completed copy. DocuSign's lease guidance explains that the U.S. ESIGN Act recognizes electronic signatures and records when the parties choose electronic documents and signatures. Read the official electronic lease signing guidance for the process.

Make sure every required person signs. That usually means the original tenant and subtenant. The landlord may need to sign a consent form or the sublease itself, depending on the master lease. Do not treat a landlord's verbal “okay” as a substitute for the written approval your lease requires.

After signing, give each person the same final PDF. Keep the approval letter, master lease, sublet agreement, inspection record, payment receipts, and later notices together. A clean file can save time when a disagreement starts.

Step 5: Review the Sublet Agreement for Risk Before Signing

Read the sublet agreement beside the master lease. Don't review the new document alone. The biggest problems often appear when the two documents conflict.

Check these points in order:

1. Confirm the landlord gave the approval the master lease requires.
2. Compare the sublet dates with the master lease dates.
3. Check that the rent and deposit match what you agreed.
4. Find every fee, penalty, reimbursement, and utility charge.
5. Match guest, pet, occupancy, smoking, and use rules to the master lease.
6. Confirm who handles repairs and how urgent problems are reported.
7. Read the default and early-termination clauses word by word.
8. Check the notice method and the move-out process.

Pay close attention to one-sided language. A clause may let one party change fees, enter the space, end the sublet, or keep the deposit without a clear reason. Another clause may say you are responsible for every act of the subtenant, even when you had no control over it. Some responsibility is expected in a sublet, but the wording should be clear enough to price and manage the risk.

Look for missing terms too. A blank about utilities can become an argument. A vague “clean condition” promise can make a deposit dispute hard to resolve. A missing end date can create problems when you need the space back.

LeaseGuard AI can review rental agreements for risky clauses, fees, and tenant-protection issues. Upload the master lease and the proposed sublet documents when the service supports your file type, then use the plain-language report to make a question list for the landlord or a qualified local lawyer.

That review is a check, not legal representation. LeaseGuard AI provides informational analysis only; it is not a law firm. If the landlord threatens eviction, the subtenant refuses to leave, or the amount at stake is large, seek advice from a licensed attorney or local tenant-help group.

Sublet Agreement FAQ

Do I need landlord approval to sublet?

Usually, you should get written landlord approval before signing a sublet agreement. Your master lease may ban subletting or set a specific consent process. Send the landlord the proposed subtenant's details and the planned dates, then keep the written response. A verbal approval may not satisfy the lease or protect you later.

Is a subtenant responsible for the original lease?

A subtenant is usually bound by the terms passed into the sublet agreement, but the original tenant remains responsible to the landlord. That means you may still owe rent or damages if the subtenant fails to pay or breaks a rule. Attach the master lease and state which provisions apply to the subtenant.

What should a sublet agreement include?

A sound sublet agreement includes the parties' names, contact details, property address, leased space, start date, end date, rent, deposit, utilities, rules, notice process, and signatures. It should also say that the sublet is subordinate to the master lease. Attach the original lease as an exhibit so the terms can be checked together.

Can I charge more rent than I pay?

You may be able to charge a different amount, but the master lease or local law may limit that choice. Some leases address excess sublet rent or require a share to go to the landlord. Check the clause before setting the price. Put the rent calculation and every added charge in writing.

Can I sign a sublet agreement electronically?

Yes, electronic signatures may be valid when all parties agree to use electronic records and signatures. Use a system that records the signed copy, dates, and signer activity. Confirm that the landlord accepts electronic consent. Save the completed agreement with the master lease and inspection record.

Conclusion

Write the agreement only after you confirm the master lease allows the arrangement and the landlord approves it in writing. Then compare both documents, record the home's condition, and save the signed file. Before you commit, upload the lease to LeaseGuard AI for a plain-language risk check, then take any legal questions to a licensed professional.