[CA] Can a landlord add an unauthorized occupant to the lease instead of evicting a tenant for unpaid rent?

CA Landlord-Tenant

Liz

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If you did allow the father to stay, paying for the damage could also be part of that agreement with the past due rent. California places responsibility on the tenant for damage caused by the tenant or by people on the premises with the tenant's permission (Cal. Civ. Code § 1941.2). You also can request a full background check and credit check, subject to California's rules on tenant screening fees (Cal. Civ. Code § 1950.6). If you don't agree, his presence is also a breach that can be used because he's an unauthorized tenant. A breach of a lease term can support a notice to perform or quit (Cal. Code Civ. Proc. § 1161), and breach of a material lease term is recognized as at-fault just cause for terminating a tenancy (Cal. Civ. Code § 1946.2).

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I have tenants in Kern County, California who moved into my home on Sep 1st, 2023. A couple, they were always late on the rent but usually paid by the end of the month. In December of 2025, they were having issues and broke up. Apparently one of them claims the other was keeping her out of the home, but I always asked the tenant still living there if she had changed the locks and she said no. So I told the first tenant to reach out to local police because it sounded more like a civil issue. Also, the remaining tenant moved her father into the home without telling me. Now she is behind on the rent for two months. I issued a three-day pay or quit two weeks ago but have not filed an unlawful detainer yet, as the father is asking to be put on the lease and he will pay the balance and catch her up. I'm not sure if I should agree to that or continue with the eviction. I have not received any payment.

Lexi, Chatbot

I understand how challenging it can be to deal with tenant issues, especially when it involves late payments and potential eviction. Have you had any communication with the tenant regarding the rent arrears and her father's request to be added to the lease?

She texted me stating she is okay with adding her father onto the lease.

Lexi, Chatbot

Are there any specific lease terms that address subletting or adding additional occupants to the property?

Yes, it does not allow subletting and moving in people without letting me know.

Lexi, Chatbot

Is there anything else the Landlord-Tenant Lawyer should know before I connect you? Rest assured they'll be able to help with your eviction process.

The father claims a recent boyfriend of the tenant had been staying there and destroying the doors in the home. The father claims he got rid of the boyfriend, and the reason he wants to be put on the lease is to have more of a legal ground to say that person cannot come around the home anymore.

Liz

Hi there! Welcome to our service. My name is Liz and I've been an attorney for more than a decade, and I am here to assist with your legal concerns. Just so you are aware, our service is a legal information-only site. No attorney-client relationship is formed from our conversation. So I can best help, have you checked the home for damage?

I got recent photos from the tenant's father of damage to the doors that he claims are at the hands of the boyfriend she had.

Liz

And did he repair it?

But have I physically gone to check for damage? The answer would be no.

No.

Liz

Got it, thanks for letting me know. Have they offered to repair or pay for repairs?

No, they have basically ignored the damage. The father more just wanted to show me what the tenant's boyfriend has done.

Liz

Thanks for clarifying that. As she is the tenant, they would be responsible for the cost of the damage.

I'm sorry, but the issue at hand is not the damage, it is the eviction.

Liz

I understand. I was asking because if you evict, that would usually also be grounds, as besides the rent being behind, the unit is now damaged.

Understood.

Liz

Would there be an issue in accepting money from the father, as he is not a named person on the lease? Should I request any payment sent to come from my tenant directly?

Liz

If you're not adding the dad, it can be a good idea for payment to come from the tenant. If you are adding him, then you could accept payment from him.

That's something that I should wait to do after the payment is received? I shouldn't be making any changes to the lease while there is still an open balance?

As I understand it, accepting a partial payment resets the three-day notice I issued previously.

Liz

If he's being added, you could request full payment as part of his application and he could pay. The daughter could also sign a consent for you to receive payment from him. It should, though, be full payment. Accepting partial does indeed reset the time.

As I understand it, adding the father as a tenant now, he would be viewed as a long-term tenant since he is being added onto an existing lease. He would have protections under state law as if he had been there since the original lease was signed in 2023.

Liz

Adding the father to the lease now would indeed grant him tenant rights and protections under California law. However, he would be considered a tenant from the date he is added to the lease, not retroactively from when the original lease was signed.

I also have the second person on the lease who moved out in February, but they have agreed to be taken off the lease. I have refused to remove them from the lease since there was still an open balance.

Liz

It's wise to keep the second person on the lease until the balance is settled, as they are still legally responsible for the rent. Once the balance is cleared, you can proceed with removing them from the lease if they agree. They are both responsible for rent.

Since I have not received any rent payment yet, I was wondering if I should continue with filing for an unlawful detainer, since I'm not sure I will get anything from them at all. And if they do pay, just pulling it from the courts.

It might be a waste of money, but at the same time I think I'm wasting time not doing anything.

Liz

Filing for an unlawful detainer can be a good step if you're uncertain about receiving payment. It can also motivate them to pay. If they do pay, you can always withdraw the case. In CA it's all forms; the UD-100 is used.

Would I be allowed to also ask for a security deposit now if we are making changes to the lease? When we first signed the lease, there was a requirement for a security deposit that I never received and I just let it go.

Liz

You can request a security deposit when making changes to the lease, especially if you're adding a new tenant like the father. It's a good opportunity to ensure you have that security in place. Just make sure it's clearly outlined in the updated lease agreement and within the legal limits.

If I do receive a partial payment, should I just send it right back to avoid invalidating the unlawful detainer order?

They sometimes send me money through Zelle or Apple Pay.

Liz

If you receive a partial payment, it's best to return it to avoid resetting the eviction timeline. You can inform them that you require full payment to proceed. This way, you maintain your legal standing with the unlawful detainer process. You might be able to block them from sending directly.

If they do pay the total amount due after I have filed the eviction notice

Liz

Then you file to dismiss.

If they do pay, that basically puts the lease in good standing, but I can still turn around and issue a 60-day notice to have them leave? We are on a month-to-month lease.

Liz

Yes, if they pay the full amount and the lease is in good standing, you can issue a 60-day notice to terminate the tenancy since it's a month-to-month lease. Although if it's under rent control, you'd still need cause.

Liz

I hope I was able to help! If you have any other questions, feel free to ask.

Liz

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