After closing on a house, the first moves are to rekey the locks, confirm your homeowners insurance is adequate, mark your first mortgage payment date, update your address with the IRS and USPS, and file for your homestead exemption before the local deadline. Everything else — utilities, HOA rules, tax planning, safety checks — follows from there. The first few weeks of ownership are when the costliest mistakes happen, so what to do after closing on a house is best approached as a sequence, starting with the items that are time-sensitive or expensive to get wrong.1Consumer Financial Protection Bureau. What Is a Mortgage Closing? What Happens at the Closing?
Rekey Every Lock Before You Unpack
You have no way of knowing how many copies of the house key are out there among previous owners, contractors, housekeepers, and real estate agents. Rekeying every exterior lock is the single most important thing to do on day one. A locksmith can reconfigure the tumblers in your existing deadbolts so old keys no longer work. Every exterior door needs this treatment, including side entries and basement access. If any locks are worn or flimsy, replace them outright with new deadbolts.
Digital access points deserve the same attention. On a garage door opener, hold the reset button on the main motor unit until it clears all previously paired remotes. Factory-reset any smart locks, keypad entries, or connected home devices the seller left behind so no synced phone or app retains access. Then pair your own devices fresh and set codes only your household knows.
Review the Homeowners Insurance Policy You Already Have
Your lender required proof of insurance before closing, so a policy is in place. That doesn’t mean you can ignore it. Pull out the declarations page and confirm the dwelling coverage matches or exceeds the replacement cost of the home’s structure. Fannie Mae’s guidelines require coverage at least equal to the lesser of 100% of replacement cost or the unpaid loan balance, as long as that balance isn’t below 80% of replacement cost.2Fannie Mae. Property Insurance Requirements for One- to Four-Unit Properties If coverage falls short, your lender can purchase force-placed insurance on your behalf, which is typically far more expensive and covers only the lender’s interest, not yours.
Standard homeowners insurance does not cover flood damage, even in areas with moderate risk. If your home is in a FEMA-designated flood zone, your lender likely required a separate flood policy at closing. In a lower-risk area, you may still want one. Review your liability limits, personal property coverage, and deductible. If you negotiated a home warranty as part of the purchase, locate that contract too; warranties typically cover major systems like HVAC, plumbing, and built-in appliances, with service call fees that usually run $75 to $150 per visit.
Mark Your First Mortgage Payment Date
Your first mortgage payment is due on the first day of the second full month after closing. Mortgage payments are made in arrears, so each payment covers the prior month’s interest. Close on June 3, and you owe nothing in July; your first payment arrives August 1. Close on June 27, and the first payment still comes August 1, with less breathing room. Your closing disclosure shows prepaid interest covering the gap between closing and the end of that month.
Mark the date immediately. Missing it can trigger a late fee of roughly 3% to 6% of the payment amount, and a 30-day late payment reported to credit bureaus can drop your score significantly. Set up autopay through your servicer’s website as soon as you have your loan number and account access.
Expect an Escrow Adjustment in Year One
Most mortgage payments include an escrow portion covering property taxes and homeowners insurance. Your servicer estimates these costs at closing and collects a monthly cushion, but initial estimates are often off. If your property gets reassessed at a higher value or your insurance premium rises, the annual escrow analysis will show a shortage, and federal rules dictate how it can be repaid depending on the size of the gap.3Consumer Financial Protection Bureau. 12 CFR 1024.17 – Escrow Accounts A first-year adjustment is common and not a sign that anything went wrong.
If Your Loan Gets Sold
Mortgage servicers frequently sell or transfer loans shortly after closing. If this happens, your old servicer must notify you at least 15 days before the transfer, and the new servicer must contact you within 15 days after it takes effect.4eCFR. 12 CFR Part 1024 Subpart C – Mortgage Servicing During the 60-day transition window, a payment sent to the old servicer cannot be treated as late. Keep both notices, and don’t panic if your first statement comes from a company you’ve never heard of.
Update Your Address With Everyone Who Matters
File a change of address with USPS as early as possible. Standard mail forwarding lasts 12 months for first-class items and is free in person at a post office with a photo ID; submitting online costs $1.25 for identity verification.5USPS. Standard Forward Mail and Change of Address Forwarding catches most stray mail but won’t last forever, so update your address directly with every bank, credit card company, and brokerage within the first week.
File IRS Form 8822 to update your mailing address with the Internal Revenue Service.6Internal Revenue Service. About Form 8822, Change of Address Missing IRS correspondence because it went to your old address can mean missed deadlines on audits, refund checks, or payment notices. Your state’s DMV also needs the new address. Most states give you between 10 and 60 days after a move to update your driver’s license, and some will fine you if you’re pulled over with an outdated address. Update your voter registration too, so you’re assigned to the correct precinct before the next election.
Transfer Utilities and Set Up Services
Contact each utility provider a few business days before closing to schedule the transfer from the seller’s name to yours. The goal is seamless service with no disconnection, especially for electricity and gas. Some providers require a security deposit if you don’t have an established payment history with them. Water and sewer service is often tied to the property itself, so the transition may involve just an administrative account change.
Confirm your trash collection schedule with the local municipality, including the pickup day and any recycling rules, so waste doesn’t pile up during moving week. For internet, check whether the home already has the infrastructure you want. If fiber is available, standard residential installation is usually included with a service plan; running new fiber lines to a home that’s never had them can cost significantly more, and most providers will quote the exact cost before you commit.
File for a Homestead Exemption Before the Deadline
A homestead exemption shields a portion of your home’s assessed value from property taxes, and it’s one of the easiest ways to save money as a new homeowner. Most jurisdictions require you to apply; the exemption is not automatic. You’ll typically need proof the home is your primary residence, such as a driver’s license showing the property address or a utility bill in your name.
Deadlines vary but commonly fall between January and March. Missing yours means losing the exemption for that entire tax year, which can cost hundreds or even thousands of dollars depending on your local tax rate and the exemption amount. Many counties accept applications online; others require filing in person at the county assessor’s office. Processing usually takes 30 to 90 days. Check whether you qualify for additional relief based on age, disability, or military service. Some jurisdictions also cap annual increases in assessed value for homesteaded properties, which compounds into real savings over time.
Organize Your Closing Documents and Start a Receipts Folder
Create a dedicated file, physical or digital, for every document from the transaction. At minimum, keep your closing disclosure, the recorded deed, your promissory note, the title insurance policy, your homeowners insurance declarations page, and the home inspection report. You’ll need these for tax filings, insurance claims, refinancing, and eventually selling the property. The closing disclosure in particular shows every cost you paid, some of which may be deductible on your next return.
Start a running log of capital improvements from day one. Every dollar you spend improving the home can be added to your cost basis, which reduces your taxable gain when you eventually sell. The IRS draws a firm line between improvements and repairs: an improvement adds value, extends the home’s life, or adapts it to a new use, while a repair simply keeps things in working order.7Internal Revenue Service. Publication 523, Selling Your Home Replacing all the windows counts as an improvement. Fixing a single broken pane does not, unless it’s part of a larger remodeling project. Qualifying work includes additions like a bedroom or deck, new systems like central air or a security system, exterior work like a new roof or insulation, and interior upgrades like a kitchen renovation or new flooring. Save every receipt, contractor invoice, and permit. Even if you don’t plan to sell for decades, that folder could save you thousands in capital gains taxes later.
Know Which Tax Deductions You Now Qualify For
If you itemize deductions on your federal return, you can deduct the interest paid on up to $750,000 of mortgage debt ($375,000 if married filing separately). This limit was set by the Tax Cuts and Jobs Act in 2017 and has been made permanent under the One Big Beautiful Bill Act. If you took out your mortgage before December 16, 2017, the older $1 million limit still applies to that debt.8Internal Revenue Service. Publication 936, Home Mortgage Interest Deduction Your lender will send Form 1098 each January showing the interest you paid.
Property taxes, combined with state income or sales taxes, are deductible up to a total of $40,400 for 2026.9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 That cap begins to phase down once your modified adjusted gross income exceeds $505,000.
You only benefit from these deductions if your total itemized deductions exceed the standard deduction. For 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Add up your mortgage interest, property taxes, state income taxes, and other itemizable expenses. If the total is close, run the numbers both ways. A married couple with a $400,000 mortgage at 7% pays roughly $28,000 in interest the first year, which alone gets close to the $32,200 threshold before counting property taxes.
Read Your HOA Documents Before You Change Anything
If your property is in a homeowners association, your obligations started the moment you closed. Locate the governing documents from the transaction: the covenants, conditions, and restrictions (CC&Rs), the bylaws, and any published rules and regulations. The CC&Rs dictate what you can and can’t do with the exterior of your home, from paint colors to fence heights to what you can park in the driveway.
Read them before starting any projects. New homeowners regularly get hit with violation notices for things they didn’t know were restricted, like installing a basketball hoop or putting up the wrong type of mailbox. Note the HOA’s dues schedule and payment method, and find out whether any special assessments are pending. A special assessment is a one-time charge split among all owners to cover a major expense like a roof replacement or road repaving, and it can run into thousands of dollars. Attending the first board meeting you can is the fastest way to learn what’s going on in the community and what costs are coming.
Run Through Safety and Maintenance Checks
HVAC Filter and Thermostat
Replace the HVAC filter immediately. You don’t know when the last one went in, and a clogged filter forces the blower motor to work harder, shortening its life and raising your energy bill. Standard filters cost $15 to $40 depending on size and filtration rating. Locate the thermostat manual, learn how to program the schedule, and make sure the system runs in both heating and cooling modes.
Smoke and Carbon Monoxide Alarms
Test every smoke detector and carbon monoxide alarm by pressing the test button. If a unit doesn’t respond, replace the battery first. If it still doesn’t sound, replace the whole unit. All smoke alarms have a 10-year lifespan regardless of whether they’re hardwired or battery-operated, and units past that age become unreliable even if they still chirp when tested.10US EPA. How to Protect Your Family from Radon When Buying a Newly Built Home Check the manufacture date on the back of each unit and replace anything older than 10 years.
Water and Electrical Shut-Offs
Find the main water shut-off valve and make sure it turns. If a pipe bursts and you don’t know where this valve is, you could be dealing with thousands of dollars in water damage before a plumber arrives. The valve is usually near where the main water line enters the house, often in the basement, crawl space, or utility closet. Locate the main electrical panel and identify which breaker controls which circuit. Label any that aren’t already labeled.
Radon Test
Even if a radon test was done during the home inspection, conditions can change. The EPA recommends fixing any home where radon levels reach 4 picocuries per liter (pCi/L) or higher, and levels below that threshold still carry some risk.10US EPA. How to Protect Your Family from Radon When Buying a Newly Built Home Inexpensive short-term test kits are available at most hardware stores. If results come back at or above 4 pCi/L, a mitigation system with an inline fan typically brings levels down to safe ranges. Radon is the second leading cause of lung cancer in the United States.
Termite Inspection
Schedule a termite inspection if one wasn’t completed as part of your purchase. Annual inspections are recommended, particularly in warm or humid climates where termite activity is highest. Catching an infestation early is a minor expense compared to discovering structural damage years later. If the home came with a termite bond or treatment warranty from the seller, transfer it into your name and note the renewal date.