Last updated: June 2026

A 1031 exchange lets you defer capital gains tax by rolling the proceeds from a sold investment property into a like-kind replacement, and Miami luxury real estate can be a workable target if you respect the clock. The two rules that govern the trade are fixed by the IRS: you have 45 days from the sale of your relinquished property to identify replacements in writing, and 180 days from that sale to close on one of them. [1] Neither window extends for weekends or holidays. [1] In a Miami market where coastal condo inventory fell 13% year over year in the first quarter of 2026, [2] the practical risk is not the tax rule. It is identifying enough qualified replacement property inside 45 days. The underwriting question is whether the Miami asset clears your basis math on a net basis after reserves, insurance, and carrying costs, not whether the headline price looks attractive. This guide covers the timeline, the current market numbers, the condo reserve liabilities that move net yield, and how to line up a replacement before you ever release your current asset.

The 1031 timeline is the binding constraint, not the tax

A 1031 exchange under Internal Revenue Code Section 1031 defers federal capital gains tax when you exchange one investment or business-use real property for another of like kind. The mechanics are timeline-driven. From the date you transfer the relinquished property, you have 45 calendar days to identify candidate replacement properties in a signed written notice delivered to your qualified intermediary, and 180 calendar days to complete the purchase. [1] These periods run concurrently, so the 180-day clock does not reset after identification. [1] The IRS does not extend either deadline for a Saturday, Sunday, or legal holiday, and they generally cannot be extended except under a federally declared disaster postponement. [1]

For a Miami buyer, that compressed identification window is the whole game. You are choosing replacement property in a market where supply is tight, so the work of underwriting candidates has to happen before you close the sale of the asset you are giving up, not after. Treat the 45 days as a deadline you have already met on paper before it starts.

Miami luxury inventory and pricing as of mid-2026

Supply in the coastal luxury segment has tightened. Condo inventory across Miami Beach and the barrier islands was down 13% year over year to 3,919 listings in the first quarter of 2026, according to Corcoran first-quarter data reported by The Real Deal. [2] On the coastal mainland, which includes Brickell, Coral Gables, Coconut Grove, and Aventura, condo inventory slipped 4% to 4,584 listings over the same period. [2]

Demand stayed positive. Miami-Dade total home sales rose 7.9% year over year in May 2026, the ninth consecutive month of annual gains, with single-family transactions up 10.5% and existing condo sales up 5.4%, per MIAMI REALTORS. [3] The high end ran ahead of the broader market: single-family sales at $1 million and above rose 26.7% year over year in May. [3]

Price thresholds have moved up with that demand. MIAMI REALTORS Chief Economist Gay Cororaton reported that in the first quarter of 2026 the entry point for the top 5% of the Miami-Dade single-family market reached $4.1 million, up from $3.2 million a year earlier, while the top 1% ultra-luxury threshold reached $13.6 million, up from $10.4 million. [4] If you are exchanging into this segment, those thresholds set your realistic shopping floor. For neighborhood-level context, see Brickell, Coral Gables, and Coconut Grove, or browse current Miami luxury homes for sale.

Condo reserve liabilities that change your net yield

If your replacement property is a condominium in an older tower, the post-2021 structural-safety regime belongs in your underwriting. Florida Senate Bill 4-D, passed in a 2022 special session after the Surfside collapse, requires milestone inspections for condominium and cooperative buildings three stories or higher and a Structural Integrity Reserve Study (SIRS) for those buildings. [5] Follow-on legislation, including HB 913 in 2025, extended the initial SIRS deadline to December 31, 2025 and gave associations more funding flexibility. [6] As of budgets adopted on or after January 1, 2025, associations subject to the SIRS requirement can no longer vote to waive or reduce reserve contributions for the designated structural components. [5]

The practical effect is that deferred maintenance is being repriced into special assessments. Documented cases have run into tens of thousands of dollars per unit, and in some buildings well over $100,000. Owners at one North Miami building faced assessments as high as $134,000 per unit, and at an Aventura property some assessments reached as high as $400,000, according to reporting on 2024 assessments. [7] Read these as a basis adjustment. A lower purchase price on a tower with an unfunded reserve and a pending assessment can net out worse than a higher price on a fully reserved building. Ask for the SIRS, the milestone report, the reserve study, and the assessment history before you identify the property, not after.

Insurance and financing context for the hold

Carrying costs feed directly into net operating income, so two inputs matter for the hold period. On insurance, the Florida Office of Insurance Regulation approved a statewide average rate decrease of 8.8% for Citizens Property Insurance homeowners multiperil policyholders in 2026, with wind-only policyholders seeing an average 5.5% reduction and more than 150,000 policyholders receiving cuts of 10% or greater. [8] The new rates take effect July 1, 2026 for new policies and apply to existing policies at renewal. [8] Citizens is the state-backed insurer, so private-market quotes will vary, but the direction of travel is a tailwind for net operating income rather than a headwind.

On financing, the 30-year fixed mortgage averaged 6.36% in the Freddie Mac Primary Mortgage Market Survey for the week of May 14, 2026. [9] Many luxury exchanges close all cash or with low leverage, but if you are financing part of the replacement to satisfy the equal-or-greater-debt requirement, the rate environment is part of your net math. Run the post-close numbers, basis, hold horizon, reserves, insurance, debt service, and your expected net, before you commit to a candidate. If you want a current read on your equity position before you relinquish, request a listing valuation, and if you want help building a pre-vetted replacement list, start with a buyer consultation.

Frequently asked questions

What are the 45-day and 180-day rules in a 1031 exchange? You have 45 calendar days from the sale of your relinquished property to identify replacement properties in a signed written notice, and 180 calendar days from that same sale date to close. The two periods run concurrently and are not extended for weekends or holidays. [1]

How tight is Miami luxury inventory in 2026? Coastal Miami Beach and barrier-island condo inventory was down 13% year over year to 3,919 listings in the first quarter of 2026, and coastal mainland condo inventory slipped 4% to 4,584 listings, per Corcoran data reported by The Real Deal. [2]

What price gets you into the Miami-Dade luxury market? In the first quarter of 2026 the top 5% of the Miami-Dade single-family market started at $4.1 million and the top 1% ultra-luxury tier started at $13.6 million, according to MIAMI REALTORS Chief Economist Gay Cororaton. [4]

Do Florida condo reserve laws affect a 1031 replacement purchase? Yes. SB 4-D and its follow-on legislation require milestone inspections and a Structural Integrity Reserve Study for condo buildings three stories or higher, and associations can no longer waive reserve contributions for designated structural components on budgets adopted on or after January 1, 2025. [5][6] Pending special assessments have run from tens of thousands of dollars to over $100,000 per unit in documented cases, which affects your true basis. [7]

Are Miami insurance costs rising or falling for 2026? For Citizens Property Insurance, the Florida Office of Insurance Regulation approved an average 8.8% decrease for homeowners multiperil policies effective July 1, 2026, with more than 150,000 policyholders receiving reductions of 10% or greater. Private-market pricing varies. [8]

Sources

If you are planning to relinquish an asset and want a replacement strategy that holds up on a net basis, reach out for a confidential buyer consultation or a listing valuation to pin down your current equity position.

Gabriel

Gabriel A. Moyers, PA. eXp Realty. Florida License #3407280. Equal Housing Opportunity. This article is general information as of June 2026 and is not legal, tax, or financial advice. Verify current figures against authoritative sources before acting.

1031 exchange into Miami luxury real estate: a 2026 investor's guide