First 90 Days as a New Homeowner — A Tax & Records Checklist

TL;DR: In your first 90 days as a new homeowner, four things need attention: filing your closing documents where you can find them, checking your local homestead or property-tax-exemption deadline (many counties give new owners only weeks after closing), starting a maintenance log, and opening a permanent cost basis file that will matter when you sell — even if that's 30 years away.

_Last reviewed: August 2026 · 8 min read_

You just closed on a house and the boxes are still stacked in the living room. Nobody handed you a to-do list for what happens after the keys, and most of what matters in the first 90 days is administrative, not decorative. Here's the order that actually protects your money.

Okoniq Property Hub helps homeowners log documents, maintenance dates, and receipts in one place so nothing gets lost between closing day and the day you eventually sell.

What paperwork should you organize first?

Your closing packet and purchase agreement are the two documents you'll need most in the next decade, so file them somewhere permanent before the moving boxes bury them. This includes the settlement statement (often a Closing Disclosure), the deed, your loan documents, title insurance policy, and any inspection reports or seller disclosures from the sale.

If anything in the purchase agreement is unclear — contingencies, who paid which closing costs, what fixtures were included — go back and reread it now while the transaction is fresh, using a guide like a first-time buyer's guide to reading a purchase agreement if terms feel unfamiliar. Scan or photograph every page and store both a paper and digital copy. If you received any closing cost assistance or down payment grant, keep that paperwork separate too — some programs have repayment or residency conditions tied to specific document trails, covered in more detail in closing cost assistance programs for first-time buyers.

What should you do about property taxes right away?

Check your county assessor's deadline for a homestead exemption or new-owner tax filing, because many jurisdictions require action within weeks of closing, not months. A homestead exemption typically reduces the taxable value of your primary residence, but the filing window is set by your county or state, and missing it can mean paying a higher bill for the entire first year with no way to retroactively fix it.

While you're in the assessor's records, confirm the assessed value they have on file matches what you actually paid. New purchase prices sometimes trigger a reassessment, and if the number looks off, you have a formal right to challenge it — see how to appeal your property tax assessment for the process and typical timelines. This is also the moment to note your first property tax due date on a calendar, since a missed first payment as a new owner is a common and avoidable mistake.

What maintenance baseline should you set in the first 90 days?

You need a full walk-through of every major system — roof, HVAC, water heater, electrical panel, plumbing shutoffs — within the first month, even if the home passed inspection. An inspection is a snapshot from before you owned the property; your own baseline walk-through, done with the systems in daily use, catches things a one-time inspector might not, like a slow drain or an HVAC that runs longer than it should.

Write down ages and locations: water heater install date, furnace filter size, breaker panel labels, main water shutoff location. This single list saves hours later and becomes the seed of a maintenance log that pays off at tax time if you ever convert the home to a rental, and pays off immediately for insurance claims and warranty coverage.

| First 90 days | First year | |---|---| | Locate main shutoffs, test smoke/CO detectors | Service HVAC before each season | | Confirm homestead exemption deadline | Reassess homeowners insurance coverage limits | | Photograph move-in condition of every room | Track any capital improvements with receipts | | File closing documents in one place | Review property tax assessment notice |

What tax records should you start now, even if you're not selling for decades?

Start a permanent cost basis file the day you close, because your basis (what you paid, plus certain closing costs, plus later capital improvements) determines your taxable gain the day you eventually sell — and that day could be 5 years or 35 years from now. Basis isn't just the purchase price on the settlement statement; costs like title fees, legal fees, and transfer taxes can generally be added to it, while separate accounts must be kept for any capital improvements you make (a new roof, a room addition, a rewired electrical system) as opposed to routine repairs.

Keep every receipt for improvements in the same file as your closing documents, permanently, not just for the standard record-retention window most people assume applies to tax returns. If you ever inherit a share of property or later convert the home into a rental, the rules for recalculating basis change — see converting primary home to rental — tax effects & basis rules for what happens if that's ever part of your plan. The exclusion rules and exact thresholds that apply when you sell a primary residence are set by statute and can change; confirm the current figures on IRS.gov or with a CPA before assuming what your gain will be.

What if you're planning to rent the house out eventually?

If turning the home into a rental is even a possibility down the road, the records habits you build now determine how smooth that transition is later. Landlords who skip early record-keeping tend to make the same costly errors in year one of renting — outlined in 9 first-time landlord mistakes that cost money in year one — and a due-diligence mindset from day one of ownership carries over directly if you ever buy a second property to rent, per first rental property due diligence: 12 things to check.

FAQ

How long do I have to file a homestead exemption after closing?

The deadline is set by your county or state assessor's office, not by the IRS, and it varies widely — some give a set number of weeks after closing, others tie it to the following January 1 assessment date. Call your local assessor in your first week of ownership to confirm the exact date.

Do I need to keep every receipt from home repairs?

Keep receipts for capital improvements (additions, new systems, major renovations) permanently, since they adjust your cost basis. Routine repairs and maintenance (a patched leak, a repainted wall) don't affect basis the same way, but keeping them anyway costs nothing and helps if you ever convert the home to a rental.

What's the difference between a repair and an improvement for tax purposes?

A repair keeps the property in its normal operating condition, while an improvement adds value, extends useful life, or adapts the property to a new use — and only improvements adjust your cost basis. If you're ever unsure which category a project falls into, a CPA can apply the same capitalize-vs-expense reasoning landlords use, outlined conceptually in capitalize vs expense? a 4-question decision tree, though that post is written for rental property specifics.

Should I reassess my homeowners insurance in the first 90 days?

Yes — confirm your policy's coverage limit reflects the actual rebuild cost of the home, not just the purchase price, since the two numbers are often different. Do this before, not after, the first claim.

Is there a deadline to challenge my property's assessed value?

Yes, and it's usually short — often 30 to 90 days from the date your assessment notice is mailed, though the exact window depends on your county. Check the notice itself for the deadline and file an appeal before it passes if the assessed value looks wrong.

<div class="glass rounded-2xl p-5 mt-7 max-w-4xl border border-red-400/30 bg-red-500/5"> <div class="flex items-start gap-3"> <span class="text-2xl flex-shrink-0">⚠️</span> <div class="flex-1 min-w-0"> <p class="text-red-200 text-sm font-bold">Not tax advice</p> <p class="text-slate-300 text-xs mt-1 leading-relaxed"> This post assumes a standard purchase of a primary residence and covers general record-keeping and deadline habits, not your specific county's exemption rules, your state's tax code, or any future rental conversion, sale timing, or inheritance scenario. Tax rules change and depend on your specific situation. Talk to a licensed CPA before acting on anything here, and confirm current figures on IRS.gov. </p> </div> </div> </div>