45 Days: What It Means for Property Deals, Leases, and Deadlines

When you hear 45 days, a standard timeframe used in real estate transactions, lease agreements, and legal notices. Also known as the 45-day window, it’s not just a number—it’s a trigger point that moves deals forward, locks in rights, or ends tenancies. Whether you’re buying a home, renting an apartment, or selling commercial space, 45 days shows up more often than you think—and ignoring it can cost you money, time, or your place to live.

This timeframe shows up in multiple places. In property sales, it’s often the window between contract signing and closing, giving buyers time to get inspections, secure financing, and finalize paperwork. In rentals, landlords in some states must give tenants 45 days’ notice before raising rent or ending a lease. For commercial deals, buyers often have 45 days to identify replacement properties under a 1031 exchange, or lenders use it to evaluate income streams before approving a loan. It’s also the typical period for landlords to return security deposits after a tenant moves out, or for buyers to walk away if inspections reveal major issues.

It’s not magic. It’s legal. And it’s not the same everywhere. In Maryland, your lease stays protected even if the landlord sells—45 days might be the notice window for a rent hike. In Virginia, senior property tax relief applications often have 45-day filing deadlines. In Australia, property registration rules like the 5-year lifetime rule can overlap with 45-day notice periods for easements or mortgages. Even in commercial real estate, where CoStar and other platforms track listings, 45 days is the sweet spot for marketing a property before pricing drops or interest fades.

What you need to know: 45 days isn’t a suggestion. It’s a deadline with consequences. Miss it, and you could lose your right to dispute a fee, get your deposit back, or qualify for a tax break. Use it right, and you can negotiate better terms, avoid scams, or lock in a deal before the market shifts. The posts below cover real cases—like what happens when a landlord sells your rental home in Maryland, how to rent an apartment in the USA without getting ripped off, and why 2BHK apartments dominate the market. Each one ties back to timing, rules, and deadlines that turn 45 days from a number into your biggest advantage—or your biggest risk.