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Yes! You can use AI to fill out California Association of REALTORS® (C.A.R.) Form LR, Residential Lease or Month-to-Month Rental Agreement (Revised 12/19)

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California Association of REALTORS® (C.A.R.) Form LR, Residential Lease or Month-to-Month Rental Agreement (Revised 12/19), page 1
Complex · 72/100Form Complexity Index

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What this form asks for

The AI fills all of it, from your answers or your documents.

C.A.R. Form LR (Residential Lease or Month-to-Month Rental Agreement) is a standardized California Association of REALTORS® contract that sets the legally important terms between a landlord and tenant for either a fixed-term lease or a month-to-month tenancy. It covers core deal points (premises, occupants, rent, security deposit, payment method, late fees) and operational/legal provisions (maintenance, entry, pets/smoking, HOA rules, notices, mediation/attorney fees, and statutory disclosures). Using a comprehensive written agreement like this helps prevent disputes by clearly defining responsibilities and timelines and by documenting required disclosures. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.
Fillable fields310
Pages8
Sections86
Form Complexity IndexComplex, 72/100

The AI checks your answers before you download

16 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Agreement Date is present and in valid date format

Validates that the Agreement Date field is completed and is a real calendar date (e.g., MM/DD/YYYY) that can be parsed by the system. This is important because many obligations (delivery timelines, commencement, notices) are calculated from the agreement date. If validation fails, the submission should be rejected or routed for correction because downstream date-based logic and compliance timelines may be incorrect.

Landlord and Tenant legal names are complete and not placeholders

Checks that Landlord Name and Tenant Name are provided as full legal names (not initials only, not 'N/A', not blank, and not generic placeholders like 'TBD'). Accurate party identification is essential for enforceability and for matching the agreement to applications, payments, and notices. If the check fails, the form should be flagged as incomplete and prevented from finalization/signature.

Premises address completeness and structure validation

Ensures Property Address Line 1 is present and contains a plausible street address, and that Property Address Line 2 (unit/apt) is required when the address indicates a multi-unit property (e.g., contains 'Apt', 'Unit', '#', or known multi-family street formats). The lease must clearly identify the premises to avoid disputes and to support service of notices. If validation fails, require correction before acceptance and optionally prompt for missing unit information.

Authorized Resident(s) list is provided and consistent with Tenant name(s)

Validates that Authorized Resident Name(s) is not blank and includes only named individuals, and that the Tenant Name appears among the authorized residents (or the system captures a clear reason if not, such as representative capacity). This matters because occupancy restrictions and liability depend on who is authorized to reside in the property. If validation fails, the submission should be flagged for review and the user prompted to reconcile the occupant list.

Tenancy type selection is mutually exclusive and complete

Checks that exactly one tenancy type is selected: Month-to-Month Tenancy OR Lease Tenancy, but not both and not neither. The term rules, termination requirements, and required fields differ depending on the selection. If validation fails, block submission and require the user to select one tenancy type.

Term dates are valid and logically consistent with tenancy type

For all submissions, validates Term Commencement Date is present and is a valid date. If Lease Tenancy is selected, Lease Termination Date must be present, valid, and after the commencement date; if Month-to-Month is selected, the termination date/time fields should be blank (or ignored) to avoid conflicting terms. If validation fails, the system should prevent finalization and request corrected dates or cleared fields.

And 10 more checks
  • Lease termination time and AM/PM are complete when a lease termination date is provided
  • Monthly rent amount is numeric, positive, and currency-formatted
  • Rent due day is valid and consistent with 'Other Rent Due Day' selection
  • Rent payment method selection and 'Other Payment Method' details completeness
  • Payable-to and delivery recipient information completeness
  • Delivery recipient phone number format validation
  • In-person rent payment hours are complete and logically ordered when enabled
  • Security deposit amount is numeric, non-negative, and within California maximum cap
  • Security deposit holding selection is mutually exclusive
  • Move-in cost ledger arithmetic consistency (Total Due/Received/Balance)

Let AI fill out your C.A.R. Form LR (12/19)

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How to Fill Out C.A.R. Form LR (12/19) Online for Free in 2026

What the AI walks you through.

  1. Go to Instafill.ai and upload the C.A.R. Form LR (Residential Lease or Month-to-Month Rental Agreement) PDF or select it from the form library.
  2. Let the AI detect and map the form fields (landlord/tenant names, agreement date, premises address, term type, rent, deposit, and payment instructions), then confirm the field matches.
  3. Enter the parties and property details: agreement date, landlord and tenant legal names, premises address, and the authorized resident/occupant names.
  4. Complete the tenancy and money terms: choose month-to-month or lease, set commencement and (if lease) termination date/time, enter monthly rent, due date, payment method, delivery/payable-to details, and late/NSF fee terms if applicable.
  5. Fill in deposits and move-in costs: security deposit amount/holding method, move-in cost table (rent period, amounts due/received/balances), and any additional fees (parking/storage) and included personal property.
  6. Finish property-use and compliance sections: utilities responsibility and meter notes, condition/statement of condition (MIMO) timing, maintenance responsibilities, pets/smoking rules, HOA information (if applicable), notices addresses, and any attached addenda/disclosures.
  7. Review with AI validation, generate a clean final copy, and route for e-signatures/initials (tenant, landlord, and guarantor if used), then download and store the executed agreement.

Common Mistakes in Completing C.A.R. Form LR (12/19)

The ones the AI is built to catch.

Using nicknames or incomplete legal names for Landlord/Tenant
People often enter a nickname, omit a middle initial/suffix, or list only one person when multiple tenants/owners are involved. This can create enforceability issues, problems with deposit refunds (checks must often be payable to all named tenants), and delays if the parties’ names don’t match IDs, applications, or ownership records. Always use full legal names exactly as they appear on government ID (tenants) and on title/ownership or authorized management documents (landlord/agent). AI-powered tools like Instafill.ai can standardize names across documents and flag mismatches before signing.
Incomplete premises address (missing unit number or inconsistent address fields)
A very common error is entering only the street address and forgetting the apartment/unit number, or putting the unit number in the wrong line (e.g., mixing it into Line 1 sometimes and Line 2 other times). This can cause confusion about which dwelling is being leased, misdirected notices, and issues with utilities setup and mail delivery. Enter the full address consistently: street address in Line 1 and unit/suite in Line 2, and ensure the “Premises” header address matches the property address fields. Instafill.ai can auto-format addresses and validate them against standardized address patterns to reduce these errors.
Not listing all authorized residents (or listing minors/occupants incorrectly)
Many tenants list only the lease signers and forget to include all occupants who will live there, or they include vague entries like “family” instead of full names. This can lead to lease violations, disputes over unauthorized occupants, and problems later when someone turns 18 and must apply per the agreement’s representation section. Avoid this by listing every person authorized to reside in the premises by full name, and update the landlord when an occupant reaches 18 as required. Instafill.ai can prompt for missing occupant names and ensure the authorized resident list aligns with the application.
Leaving tenancy type ambiguous (Month-to-Month vs. Lease) or checking both
The form requires selecting either month-to-month or a fixed-term lease, but people sometimes forget to check one, check both, or check one while still filling dates that imply the other. This creates uncertainty about termination rights, notice periods, and whether a specific end date applies. Choose exactly one tenancy type and complete only the fields that correspond to that choice (e.g., lease termination date/time only for a fixed-term lease). Instafill.ai can enforce mutually exclusive selections and prevent contradictory entries.
Incorrect or inconsistent dates (Agreement Date, Commencement Date, Rent period dates)
Users frequently mix up the agreement signing date with the commencement date, or they enter dates in inconsistent formats (MM/DD vs DD/MM) and create impossible timelines. This can affect when rent is due, when possession must be delivered, and the timing of notices and prorations. Use a single date format throughout (typically MM/DD/YYYY in California forms) and double-check that the commencement date aligns with move-in and utility start dates. Instafill.ai can normalize date formats and flag conflicts (e.g., termination date earlier than commencement).
Rent due day and proration misunderstandings
A common mistake is leaving the “other rent due day” blank when rent is not due on the 1st, or entering an invalid day (e.g., 31) without considering shorter months. People also misunderstand the proration clause and assume any partial month is prorated automatically, which can cause payment disputes. If rent is due on a day other than the 1st, check the “Other Rent Due Day” option and enter a valid day number; confirm in writing how the first/second month will be handled if commencement is mid-month. Instafill.ai can validate day-of-month entries and help calculate/confirm prorated amounts.
Payment instructions left incomplete (payable to, delivery recipient, delivery address, accepted methods)
Tenants often check a payment method but forget to fill in who the payment is made payable to, where it must be delivered, or the recipient’s phone number and delivery hours (if in-person payment is allowed). Missing or unclear payment instructions can lead to late fees, returned payments, and disputes about whether rent was properly tendered. Complete all related fields: payee name, delivery recipient name, phone number, and full delivery address; only check payment methods the landlord truly accepts. Instafill.ai can require dependent fields when a payment option is selected and format phone numbers/addresses correctly.
Security deposit errors (amount exceeds legal cap or conflicts with rent/furnishing status)
People frequently enter a deposit amount without checking the statutory maximum noted on the form (two months’ rent unfurnished, three months’ rent furnished, subject to current law and local rules). Overstating the deposit can create legal exposure for the landlord and delays while the amount is corrected; understating can cause move-in funding shortfalls. Confirm whether the unit is furnished or unfurnished and ensure the deposit amount complies with the stated cap and any applicable local ordinances. Instafill.ai can cross-check deposit vs. monthly rent and flag amounts that exceed the allowed threshold.
Move-in cost table math mistakes (Total Due/Received/Balance/Due Date mismatches)
The move-in cost grid is prone to arithmetic errors—people enter totals that don’t equal the sum of rent + deposit + other charges, or they forget to update “Balance Due” after recording “Payment Received.” These mistakes cause confusion at move-in, disputes over what was paid, and accounting problems for both parties. Recalculate each line item and ensure the “Total” row matches the sum of all categories, with consistent due dates and payee names. Instafill.ai can automatically compute totals and balances and prevent inconsistent entries.
Parking and storage selections inconsistent with fees and details
Users often check “Parking permitted” or “Storage permitted” but leave the details blank (space number, rules, location), or they indicate it’s not included in rent but forget to enter the monthly fee. This can lead to disputes over assigned spaces, towing, and unexpected charges. If parking/storage is permitted, specify exactly what is included (space numbers, restrictions) and clearly state whether it’s included in rent and the additional monthly fee if not. Instafill.ai can prompt for required details when an option is selected and ensure fee fields aren’t left empty.
Premises condition acknowledgments and MIMO timing left unchecked or not returned
Tenants commonly check that everything is “clean and operable” without listing exceptions, or they fail to complete/return the Statement of Condition (MIMO) within the required timeframe. The consequence is serious: unreported issues may be deemed accepted, making it harder to dispute damage claims at move-out and potentially reducing the security deposit return. Document exceptions in detail at move-in, attach the MIMO if used, and meet the stated return deadline (or the alternative days specified). Instafill.ai can remind users of deadlines, ensure exceptions are captured, and keep attachments organized.

Frequently Asked Questions About C.A.R. Form LR (12/19)

 

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Can I fill other forms too?
This plan is for your C.A.R. Form LR (12/19): your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
How do I cancel?
From your account, in two clicks, any time. No email, no call.
How does the AI fill out C.A.R. Form LR (12/19)?
You answer a few questions in plain words, or upload the listing or an old lease. The AI reads what you give it and puts each answer into the right field of C.A.R. Form LR (12/19), on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
How complex is C.A.R. Form LR (12/19) to fill out?
C.A.R. Form LR (12/19) has a Form Complexity Index of 72 out of 100, in the complex tier: 310 fillable fields across 8 pages. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the C.A.R. Form LR (Residential Lease or Month-to-Month Rental Agreement) used for?
This form is a written agreement that sets the terms for renting a residential property in California, either as a fixed-term lease or a month-to-month tenancy. It covers rent, deposits, utilities, rules, maintenance responsibilities, and required disclosures.
Who needs to sign and initial this agreement?
All named tenants and the landlord (or the landlord’s authorized agent) must sign, and the parties typically initial where indicated on each page/section. If there are multiple tenants, each tenant is jointly and individually responsible for the obligations under the agreement.
How do I choose between “Month-to-Month” and “Lease” in the Term section?
Check “Month-to-Month” if the tenancy continues until either party gives proper written notice (tenant generally at least 30 days). Check “Lease” if the rental ends on a specific termination date and time listed in the form.
What happens if the tenant hasn’t paid all amounts due by the commencement date?
If all amounts due are not paid, the tenant may have no right to possession or keys, and the agreement can be voided by the landlord after giving a Notice to Pay (C.A.R. Form PPN) and waiting the required time. If the landlord voids the lease, rent and the security deposit paid must be refunded.
What information do I need to complete the Property and Authorized Residents sections?
You’ll need the full property address (including unit number if applicable) and the full legal names of all persons authorized to live in the premises. Only the named residents are permitted to occupy the property unless the agreement is updated in writing.
How do I list included personal property (like appliances or furniture) on the form?
List the items in the “Included Personal Property” lines (e.g., refrigerator, washer/dryer, patio furniture). If there are many items, check the box indicating an attached addendum and reference the addendum list.
How is rent due date, delivery method, and payee information filled out?
Enter the monthly rent amount, select the due date (usually the 1st unless an alternative day is specified), and choose acceptable payment methods (check, money order, cashier’s check, wire/electronic transfer, or other). Then fill in who rent is payable to, who receives it, and the delivery address (and optional in-person hours/days if allowed).
How does proration work if the commencement date is not the normal rent due date?
If the commencement date is not the usual rent due day and a full month’s rent has been paid in advance, the second month may be prorated. The form states proration is calculated at 1/30th of the monthly rent per day for each day remaining in the prorated second month.
What are the rules for the security deposit and when must it be returned?
The security deposit amount is stated in the agreement and may be used for unpaid rent-related charges, damage beyond ordinary wear and tear, cleaning, and certain replacements/returns. The form states the landlord must provide an itemized statement and return any remaining deposit within 21 days after the tenant vacates, subject to California Civil Code § 1950.5.
What late fees and NSF (bounced check) fees can be charged under this agreement?
If rent is not received within the stated grace period (default is 5 calendar days unless another number is filled in), a late charge may apply as either a fixed dollar amount or a percentage of rent (as completed in the form). NSF fees are listed as $25 for the first returned check and $35 for each additional returned check, and the landlord may require more secure payment methods after an NSF event.
How do parking and storage work if they are not included in rent?
The form lets the parties specify whether parking/storage is permitted and whether it is included in rent. If not included, an additional monthly fee can be entered, and the agreement restricts uses (e.g., operable registered vehicles only for parking; no hazardous/illegal items for storage).
Who pays utilities, and what if utilities are not separately metered?
The agreement lists which utilities/services the tenant must pay and which are paid by the landlord. If utilities are not separately metered, the tenant pays a proportional share as reasonably determined by the landlord; if separately metered, the tenant must place utilities in the tenant’s name as of the commencement date.
What is the move-in condition statement (MIMO), and what happens if the tenant doesn’t return it?
The MIMO (C.A.R. Form MIMO) documents the condition of the premises at move-in and may be attached or delivered shortly after signing/commencement as selected in the form. If the tenant does not return the completed MIMO within the stated deadline, the tenant may be deemed to have acknowledged the condition as stated in the MIMO.
Can I use AI to help fill out this lease form accurately?
Yes—AI tools can help reduce errors and save time by auto-filling fields from the information you provide. Services like Instafill.ai use AI to map your details into the correct form fields and help you review before signing.
How do I fill out this lease online using Instafill.ai, and what if my PDF isn’t fillable?
Upload the lease PDF to Instafill.ai, provide your rental details (parties, rent, deposit, dates, utilities, etc.), and the AI will auto-fill the matching fields for you to review and export. If the PDF is flat/non-fillable, Instafill.ai can convert it into an interactive fillable form so you can complete and sign it more easily.
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