If you sell an investment property this year and plan to use a 1031 exchange, the 45-day identification clock starts the moment escrow closes on your sale. From that day you have 45 calendar days to formally identify replacement property and 180 days total to close on it. Most investors who miss the window did not plan poorly. They just started looking too late. Here is how the timeline actually works and where people trip.
What are the 45-day and 180-day 1031 deadlines?
A 1031 exchange lets you sell an investment property and defer capital gains tax by rolling the proceeds into a like-kind replacement property. Two deadlines run from the day your sale closes, and both are calendar days, not business days, with no extensions for weekends or holidays.
The first is 45 days to identify your replacement property in writing, following the IRS identification rules. The second is 180 days to close on that replacement. The 45-day window sits inside the 180, so the clock is tighter than it sounds. Miss either date and the exchange fails, and the tax you were deferring can come due.
| Milestone | Deadline |
|---|---|
| Sale of your property closes | Day 0 (clock starts) |
| Identify replacement property in writing | By day 45 |
| Close on replacement property | By day 180 |
What are the identification rules?
Identification is not just picking a property, it follows specific IRS rules, and most exchangers use one of two. The three-property rule lets you identify up to three properties regardless of value, and you can buy one, two, or all three. The 200 percent rule lets you identify any number of properties as long as their combined value does not exceed 200 percent of what you sold. Both require the identification to be in writing, signed, and delivered to the right party within the 45 days.
The practical takeaway is that you usually get to name a small backup set, not an unlimited list, so you want your top choices identified with intention. This is educational, and your qualified intermediary and CPA should confirm how the rules apply to your exchange.
Why do so many investors miss the 45-day deadline?
Almost always because they treated identification as something to handle after the sale closed. By the time escrow closes, 45 days is not much runway to find, vet, and formally identify the right replacement property, especially in a market where good inventory moves.
The owners who make it work start looking before they list. They line up a qualified intermediary early, get clear on what they actually want to own next, and often have candidate properties in view before their sale even goes under contract. The sale is the starting gun, not the moment to start shopping.
What happens if you miss the deadline?
The exchange fails, and the sale is treated as a normal taxable sale. That means the capital gains tax you were deferring, plus any depreciation recapture, can come due for that tax year. There is no partial credit for being close on the 45th day, the rule is a hard line.
That is why the timeline gets so much attention. The cost of missing it is not a fee or a penalty, it is losing the entire tax deferral the exchange was built to capture. Planning ahead is not about being tidy, it is about protecting real money.
What makes a good 1031 replacement property?
That depends entirely on what you are trying to solve. A common move for owners tired of active residential rentals is trading into single-tenant net-leased property, where a triple net structure shifts property taxes, insurance, and maintenance to the tenant. As of spring 2026, investment-grade corporate net-leased retail was trading in a roughly 5.5% to 6.5% cap rate range in the Sacramento region, with multi-tenant retail centers higher at roughly 7% to 8.5%. Industrial has been rebalancing, with regional vacancy at a 10-year high even as rents held, which has opened up more options for buyers than there were a couple of years ago.
The point is not that any one of these is right. It is that “replacement property” covers very different outcomes, from passive net-leased income to active value-add, and the timeline pressure makes it worth knowing which one you want before the clock starts.
Can you exchange out of residential and into commercial?
Yes. This is one of the most common exchanges done in the Sacramento region: an owner sells one or more residential rentals and moves into commercial, often to get out of day-to-day management or to trade several small headaches for one cleaner asset. Like-kind is broad for real property held for investment, so a residential rental can generally be exchanged for commercial, as long as both are held for investment or business use.
The mechanics matter and the details are specific to your situation, so this is where a qualified intermediary and your CPA earn their keep. This is educational, not tax advice. Your own advisors should confirm how the rules apply to you.
Is there a way to buy the replacement first?
There is, and it is called a reverse exchange, where you acquire the replacement property before selling the one you are relinquishing. It solves the biggest problem with a hot market, finding the right replacement in time, but it is more complex and more expensive to structure, because an intermediary has to hold title to one of the properties in the interim. It is not for every deal, but for an owner who finds the perfect replacement before their sale is ready, it is worth asking a qualified intermediary about.
Reverse exchanges have their own strict timelines and requirements. Like the rest of this, it is a conversation for your intermediary and CPA, not a do-it-yourself structure.
Getting the timeline right
The single most useful thing you can do is start before you sell. Understand the deadlines, line up your intermediary, and know what you want to own next so the 45 days is confirmation, not a scramble.
The 1031 exchange page covers the strategy in more depth, the selling a rental property guide is the place to start if you are coming from the residential side, and the free cap rate guide helps if you are comparing replacement options by yield.
FAQ
When does the 45-day 1031 clock start?
It starts the day escrow closes on the sale of your relinquished property. From that date you have 45 calendar days to identify replacement property and 180 days total to close.
Are the 1031 deadlines business days or calendar days?
Calendar days. There are no extensions for weekends or holidays, which is why the timeline is tighter than many owners expect.
What are the 1031 identification rules?
Most exchangers use the three-property rule (identify up to three properties, any value) or the 200 percent rule (identify any number as long as combined value stays under 200 percent of what you sold). Identification must be in writing within 45 days.
What happens if you miss the 1031 deadline?
The exchange fails and the sale becomes taxable, so the deferred capital gains tax and any depreciation recapture can come due. There is no partial credit, the deadline is a hard line.
Can I do a 1031 exchange from a residential rental into commercial property?
Generally yes, as long as both properties are held for investment or business use. Selling residential rentals and exchanging into commercial is one of the most common moves owners make to reduce active management.
Do I need a qualified intermediary for a 1031 exchange?
Yes. IRS rules require a qualified intermediary to hold the proceeds between the sale and the purchase. You cannot take receipt of the funds yourself and still qualify.