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The deposit check carbon is on the table. The lease has a deposit box. You tap the edge of the faded carbon slip, then run a finger along the thick black border of the highlighted box on the lease document that lists the required security deposit figure for your space. The two numbers don’t match, and you’re already mentally running through the conversations you had with the property manager two weeks prior, when you finalized the last of the lease terms before signing. You set your phone down so you don’t get distracted by incoming notifications, and lean in to read the fine print below the deposit box to make sure you didn’t miss a mandatory fee rolled into the deposit requirement.
What the paper says
The lease’s security deposit box explicitly lists the required security deposit as a fixed amount, tied to 10% of your annual base rent per the terms outlined in the rent schedule section 12 pages earlier in the document. The fine print below the box notes the deposit is held for the full duration of your 3-year lease term, applied only to unpaid rent or documented damages to the space beyond normal wear and tear at the end of your occupancy. It also specifies that the deposit will be returned to you within 30 days of your lease end date, minus any approved deductions, provided you have met all obligations outlined in the lease. The carbon copy of the check you wrote three days ago, by contrast, is for 15% more than the boxed amount, a discrepancy you notice immediately because you circled the lease’s deposit number in bright blue ink when you first reviewed the final draft last week. Illustrative example: The boxed lease amount is $8,200, and the check you wrote is for $9,430, a difference you initially wrote off as a last-minute adjustment for a required parking pass you forgot to note, but now can’t confirm via any written correspondence with the property management team.
What you leave alone
You don’t cross out the boxed number or scribble a correction in the margins of the fully executed lease copy right now, even if you’re certain the check amount is wrong. Any unauthorized marks on the signed lease copy can create ambiguity later if there’s a dispute about agreed-upon terms, even if your adjustment is factually correct, as it can look like you altered the document after signing without formal approval. You also don’t fire off a heated text or voice note to the property manager right now, because you want to gather all supporting documentation before you reach out to avoid miscommunication that could slow down the resolution process. The only thing you touch right now is a separate, blank sheet of paper to jot down the two numbers, the date you noticed the discrepancy, and a short note about the parking pass you thought was included, so you don’t forget the details as you work through the rest of your lease review.
The ten-minute check
This quick, focused check walks you through verifying the source of the discrepancy without wasting time on irrelevant paperwork, and follows these clear steps:
- Pull up the email thread where you negotiated the security deposit amount, and search for the exact figure the property manager confirmed in writing on the final term sheet sent 72 hours before you signed the lease.
- Cross-reference that confirmed figure with both the boxed lease amount and the check carbon amount, noting which of the two matches the negotiated term, and flagging any line items you don’t recognize in either document.
- Locate the receipt the property management team sent to your inbox the day they deposited your check, and confirm the amount they processed matches the number on your carbon copy, and that it is labeled correctly as a security deposit rather than a separate move-in fee or first month’s rent.
- Flag the page of the lease that holds the security deposit box with a thin, removable sticky note, so you can flip back to it instantly when you follow up with the property team, without marking the actual lease document.
- Add a calendar reminder for 48 hours from now to follow up if you don’t get a response to your initial outreach about the discrepancy, so the issue doesn’t fall through the cracks in the chaos of your upcoming move.
Where the page goes
After you finish the ten-minute check, you tuck the lease page holding the security deposit box into a dedicated, labeled manila folder with your check carbon, the printed final term sheet, and the digital deposit receipt you printed from the property team’s tenant portal. You don’t file it away in a deep filing cabinet you only access once a year, because you need to reference it quickly when you speak to the property manager later that day. If you use a cloud document storage system, you scan the page and all supporting materials, tag them with your lease start date, space number, and “security deposit discrepancy” label, so you can pull them up on your phone if you get an unexpected call from the property team before you’re back at your desk. If you use Lease Jacket to organize your lease documents, you attach the scanned check carbon and receipt directly to the lease page entry, so all related materials live in one accessible spot that you can share with the property manager with a single link if they request proof of your payment.
What you do not assume
Don’t assume the discrepancy is a deliberate overcharge on the property team’s part; administrative mix-ups are extremely common when multiple people process lease paperwork, coordinate move-in fees, and deposit checks in the short window between lease signing and your move-in date. The team may have accidentally added a separate maintenance deposit to your required payment that was not updated in the final lease draft, or you may have misread the required amount when you filled out the check in a rush before a work meeting. Don’t assume the extra amount you paid will automatically be applied to your first month’s rent unless you get that agreement in writing from an authorized representative of the property ownership team; verbal confirmations over the phone are not enforceable if the team changes staff or loses track of your conversation. Don’t assume the boxed lease amount is incorrect just because you wrote the check for a higher figure; it’s equally possible you misread the required amount when you filled out the check, and you will need to sign a formal addendum to update the lease terms if that’s the case. Don’t assume you can deduct the extra amount from a future rent payment without explicit written approval, because that can trigger late fee charges or a formal notice of non-payment from the property team that goes on your tenant record.
The next time you open this same page
You open this page again 72 hours later, with the written response from the property management team pulled up on your laptop next to the physical lease. The response confirms the source of the discrepancy: the team had added a mandatory $1,230 common area maintenance deposit to your required payment that was not updated in the final lease draft before you signed. If the check amount had been the error, you would sign a short, formal addendum that updates the boxed deposit figure to match the amount you paid, with both you and an authorized property representative signing the addendum before you attach it to the back of your lease copy for your records. In this case, the boxed lease amount was missing the additional maintenance deposit, so you review the addendum the team sends over to confirm it lists the total security deposit as $9,430, breaks out the $8,200 base deposit and $1,230 maintenance deposit clearly, and specifies that both amounts are eligible for return at the end of your lease term provided you meet all lease obligations. You sign the addendum, send it back to the team, and attach a printed copy to the back of the lease page so you have all related documentation in one place. You jot a short note on your separate sheet of paper confirming the addendum was signed and returned on the current date, then tape that note to the back of the lease page as well. You double-check that all figures match across every document related to the deposit: the check carbon, the property team’s deposit receipt, the lease addendum, and the original boxed lease amount with the addendum attached. You don’t have to revisit this issue again until your lease ends, when you submit your request for the full return of your security deposit, and you can pull all the supporting documentation out in 30 seconds or less if any questions arise in the interim.