1031 Exchange for a Vacation Rental

150 rented nights and 30 family nights on a $2 million beach house fail the 14-day/10% test by 15 nights

Run the safe harbor for each of the two 12-month periods ending the day before the sale. With 150 nights rented at fair rental, 10% is 15 nights, which is greater than 14, so 15 is your ceiling; 30 nights of personal use exceeds it and the house is outside the safe harbor for that year.

Being outside the safe harbor is not a disqualification. The revenue procedure only promises that the IRS will not challenge a qualifying unit; outside it, the question is whether the house was held for investment on all the facts, and the Tax Court in Moore v. Commissioner denied an exchange of lake houses that were never rented and used only by the family.

The practical fix is to change the count before the sale rather than argue after it: cut personal use to 15 nights or fewer in each of the two years, or raise fair-rental nights to 300 so that 30 personal nights fall within 10%. A sale in September 2028 needs clean periods from September 2026 to September 2028.

What a completed exchange defers on the $2 million house: about $270,000 of federal tax

Hypothetical: the beach house cost $1,000,000 ten years ago, $200,000 of depreciation was allocated to rental days over that time, and the sale nets $1,900,000 after $100,000 of costs. The realized gain is $1,100,000, of which $200,000 is unrecaptured section 1250 gain.

Federal tax without an exchange: $50,000 on the depreciation layer at 25%, $180,000 on the remaining $900,000 at 20%, and $41,800 of net investment income tax on the whole gain, or about $271,800 before state tax. A completed exchange defers all of it, which is why the day counts in the two prior years are worth auditing before the listing goes up.

Which nights count against you under section 280A(d)(2)

Rev. Proc. 2008-16 borrows the personal-use definition from section 280A(d)(2), taking into account (d)(3) but not (d)(4), and Pub. 527 and Schedule E line 2 require you to report the fair-rental and personal-use days for each property every year.

• Any part of a day you or a family member described in section 267(c)(4) (siblings, spouse, ancestors, lineal descendants) use the unit, whether or not rent is paid.
• Any day someone pays less than fair rental, including friends at a discount.
• Any day used under an arrangement that lets you use another dwelling in return.
• Not counted: days you spend substantially full time repairing and maintaining the property, even if family comes along.
• Counted as rental under (d)(3): a family member who pays fair rental and uses the unit as their principal residence.

Two clean years before the sale, two clean years after the purchase

The relinquished-property test looks back 24 months; the replacement-property test looks forward 24 months from the day after the exchange with the same 14-day and 10% limits. If you report an exchange expecting the replacement to qualify and then overuse it, section 4.05 of the procedure expects an amended return that drops the exchange.

A year with fewer than 15 rental days is a warning sign: under section 280A(g) you do not report the income or deduct expenses for such a year, which reads as a residence, and it also fails the 14-rental-day prong of the safe harbor.

Keep the evidence the IRS recordkeeping guidance describes: platform statements showing dates and rates, a calendar of owner and family stays, repair logs with hours, and the Schedule E day counts filed each year.

Where $2 million of beach-house equity can land: several smaller rentals, a long-term rental, or a DST

Any U.S. real estate held for investment is like-kind, so the beach house can become two or three smaller vacation rentals in different markets, a long-term rental duplex with no seasonal vacancy, or a beneficial interest in a Delaware Statutory Trust under Rev. Rul. 2004-86. Identify up to three properties of any value, or any number whose total stays within $4,000,000.

Local short-term rental law belongs in the replacement decision because it drives the rental-day count you will need for the next 24 months. New York City's Local Law 18, for example, requires hosts to register with the Office of Special Enforcement for stays under 30 days and bars platforms from processing bookings for unregistered listings; a market that caps or bans un-hosted rentals makes 14 fair-rental days harder to reach and weakens the investment story.

A DST removes the personal-use question entirely, since you cannot occupy a fractional interest in an apartment community, and it can absorb the part of the proceeds that does not fit a direct purchase. The DST guide covers structure and risks.

Buying the house you will retire to: 24 months of rental first, then the five-year rule for §121

You can exchange into a vacation home you intend to live in eventually, provided you hold it for rental first. Pub. 523 states that you cannot convert the replacement to a main home immediately, and meeting the replacement safe harbor for 24 months is the cleanest record of investment intent.

When you later sell it as your residence, section 121(d)(10) denies the exclusion if the sale is within five years of the 1031 acquisition, gain allocated to post-2008 periods when it was not your residence is not excludable under section 121(b)(5), and depreciation claimed after May 6, 1997 is taxed in any case. The deferred gain from the beach house does not disappear; it is embedded in the basis and surfaces at that sale.

Confirm the personal-use count for both years with your CPA or attorney before you sign a listing agreement.