What is a Co-Tenant Agreement?

It is used by tenants, subtenants and housemates who want the terms recorded before work starts or money changes hands, rather than reconstructed from memory afterwards. Putting it in writing is what turns an understanding into something either side can rely on.

18 details are captured across 5 areas: parties and contact details, payment and financial terms, dates, timing and duration, property and premises, and legal protections and risk. Together they fix what the landlord owes the tenant, measured in notice periods rather than in adjectives.

The written record of what was requested and when is what settles most disagreements here, which is why it is worth attaching rather than leaving in an inbox. Residential tenancies are tightly regulated. Deposit handling, entry notice and eviction procedure are all governed by statute, and non-compliance can cost a landlord the right to evict.

Complete the fields, read the assembled co-tenant agreement in the preview panel, then download it in PDF or Word format. The document follows widely used contract conventions, though it cannot account for every state rule or industry requirement — professional review is sensible before signing anything substantial.

What matters most in a co-tenant agreement

Check the head lease first

Most leases prohibit subletting without the landlord's written consent. Subletting without it can breach the lease and put the original tenant's tenancy at risk.

The original tenant usually stays liable

Subletting rarely transfers liability. If the subtenant stops paying, the head landlord will still pursue the original tenant.

Divide costs explicitly

Rent share, utilities, internet and shared supplies should each be allocated with a payment date. Vague splits are the leading cause of housemate disputes.

When you need a co-tenant agreement

  • When the counterparty is new to you: With no track record between the parties, the written terms do the work that familiarity would otherwise do. That is exactly when precision pays for itself.
  • When the arrangement will repeat: For a relationship that runs across several jobs or periods, agree the standing terms once and let each instance sit under them rather than renegotiating from scratch.
  • When money changes hands: Record what the tenant owes, when each notice period falls due, and what follows a late payment. These are the clauses relied on most often and left vague most often.
  • When the response deadline matters to someone else: Where a lender, insurer, landlord or regulator will want to see the arrangement, it needs to be written to be read by them, not only by the landlord and the tenant.
  • When the parties are in different places: Naming the governing law and the forum in advance prevents a costly preliminary fight about where any dispute is even heard.
  • When risk needs allocating: Decide who carries which risk and who insures it before an incident rather than after one. Afterwards, both readings of the silence are self-serving.

What to include in a co-tenant agreement

This generator collects 18 details. Here is what each group covers and why it matters when the document is relied on.

Parties and contact details

These entries decide who can enforce and who can be enforced against. Where either side is a company, use the registered name — a trading name is not a party.

Roommate One Name
The first roommate's full legal name. Each roommate named here shares responsibility for the agreed costs.
Roommate One Address
The first roommate's contact address, typically the shared property.
Roommate Two Name
The second roommate's full legal name.
Roommate Two Address
The second roommate's contact address.

Payment and financial terms

Say what happens when the tenant pays late. Without interest and a right for the landlord to suspend, the deadline is a suggestion.

Monthly Rent
The rent amount due each period, the due date and the accepted payment methods. Ambiguity here is the single most common source of tenancy disputes.
Security Deposit
The deposit amount and the conditions for its return. Most states cap the deposit and impose a strict deadline for returning it with an itemised deduction statement.
Late Fee
The charge for overdue payment and the grace period before it applies. Keep the fee proportionate — a penalty that vastly exceeds actual loss is often unenforceable.

Dates, timing and duration

Where the landlord depends on the tenant for something, say what happens to these dates when it arrives late. Otherwise the delay attaches to the wrong party.

Effective Date
The date the agreement takes effect. This can differ from the signature date, and it is the date obligations start running from.
Lease Start Date
The first day of the tenancy, when possession passes and rent begins to accrue.
Lease End Date
The final day of the fixed term, and what happens afterwards — whether the lease ends, renews or rolls month to month.
Notice Period
How much warning a party must give before ending the agreement, and how notice must be delivered to count.

Property and premises

Say who is responsible for which part of the property, split by category and value, and remember that statutory repairing duties cannot be contracted away.

Property Address
The full address of the property, including unit number, so the subject of the agreement is unambiguous.
Premises Description
What is included in the letting: rooms, parking, storage, garden and any shared areas.
Utilities Responsibility
Which utilities each party pays for, and how shared or unmetered supplies are apportioned.
Maintenance Responsibility
Who handles repairs and at what threshold. Landlords cannot usually contract out of statutory repairing obligations.
Pet Policy
Whether pets are permitted, any deposit or rent premium, and the rules. Assistance animals are generally protected regardless of a no-pets clause.
Rules and Regulations
House rules covering noise, guests, smoking, parking and shared spaces.

Legal protections and risk

Naming the governing law and the forum here avoids a preliminary fight about where a dispute over the tenancy arrangement is even heard.

Governing State
The state whose law governs the agreement. Choose a state connected to the parties or the work, as a wholly unconnected choice may not be respected.

Completing this co-tenant agreement

Recording where this applies

If the parties are in different states, name which state's law applies and where any dispute would be heard. Adding one line now avoids a preliminary argument later.

Reading it as the other side would

Before signing, read the co-tenant agreement from the counterparty's position and look for anything you would exploit. If you find something, so will they.

Describing the tenancy arrangement

The strongest version of this co-tenant agreement describes the tenancy arrangement in terms someone outside the deal could check — quantities, notice periods, dates and standards. Write it so a reader who was not in the room can tell whether it has been done.

Signing and keeping it

Every party named should sign and date, and each should keep their own copy. Electronic signatures are valid for the great majority of agreements — retain the audit trail showing who signed and when.

Getting the numbers right

Write key figures out in full where the amount is central, and state the currency if either party is outside the country. Both are cheap precautions against an expensive misunderstanding on a co-tenant agreement.

Common mistakes to avoid

  1. Using approximate dates. Use calendar dates rather than triggers like "on approval" or "once ready". A date that cannot be located on a calendar cannot be used to show that someone is late.
  2. No route out. Agree how the arrangement ends while the landlord and the tenant still get on. Exit terms negotiated during a dispute rarely favour anyone, and they cost far more to settle.
  3. Silence on who carries the risk. Decide before the response deadline, not after, which side bears loss or damage and who insures it. Once something has gone wrong, both parties read the silence in their own favour.
  4. Not saying what happens on breach. Distinguish a failure that can be put right within a cure period from one that ends the agreement immediately. Treating both the same way makes the clause unusable.
  5. Signing before the written record of what was requested and when is settled. The agreement leans on the written record of what was requested and when, so that needs to be confirmed and attached at signature rather than promised for later. A contract pointing at something nobody has produced yet is an agreement to agree.

How to use this co-tenant agreement generator

  1. Fill in the form. Work down the 18 fields in order. The ones describing the tenancy arrangement carry the most weight, so give them more than a few words — everything else in the document refers back to them. Nothing is sent to a server — the document is assembled in your browser.
  2. Read the preview. Check the preview against the written record of what was requested and when. Where the two disagree, the document is the version that will be relied on, so fix it here.
  3. Download and sign. Take the PDF for signing or the Word version for further edits. Make sure the signed copy reaches everyone named, since a document held by only one side is hard to rely on.

Co-Tenant Agreement — frequently asked questions

Does the landlord need to approve a sublet?

Almost always. Standard leases require written landlord consent, and subletting without it is typically a breach that can lead to eviction of everyone, including the subtenant who did nothing wrong. Get consent in writing before the subtenant moves in — a verbal 'that should be fine' from an agent is not enough to rely on.

What records should I keep alongside the co-tenant agreement?

The written record of what was requested and when, the signed document itself, and a contemporaneous note of anything agreed afterwards. Most disputes turn on what was agreed at the time, and the party who can produce a dated record is the party who wins that argument.

Does anything survive after the co-tenant agreement ends?

Yes. What happens if the deadline passes without a response continues past the response deadline, and confidentiality obligations normally do too. Anything expected to survive has to say so expressly — an obligation that is merely assumed to continue generally does not.

Which state's law should govern this co-tenant agreement?

Choose a state with a genuine connection to the parties or the subject matter — where a party is based, or where the work or property is located. A choice with no connection at all may not be respected, and for property or employment the local state's rules will often apply regardless of what the contract says.

When must the security deposit be returned?

Most states set a deadline of 14 to 30 days after the tenancy ends, along with a requirement to provide an itemised statement of any deductions. Missing that deadline can mean losing the right to deduct anything at all, and some states add a penalty on top. Document the property's condition at both move-in and move-out.

How much can the late fee be?

It should be a genuine estimate of the cost of late payment, not a punishment. Courts strike down fees that are disproportionate to actual loss, and several states cap late fees on rent specifically. A modest percentage after a stated grace period is the defensible approach.

How is notice properly given under this agreement?

Follow the notice clause exactly: use the stated method, send it to the address named in the agreement, and keep proof of delivery. Notice given informally — a text message, or an email to the wrong person — is frequently challenged, and a defective notice can leave the agreement running on.

Can rent be increased during the fixed term?

Not unless the lease contains a specific rent review clause. During a fixed term the agreed rent stands. For periodic tenancies, increases require proper written notice, and rent-controlled areas cap the amount.