1031 Exchanges in Delaware: Rules, Taxes, Insurance, and the Long Arc

A Shop 1031 research page. Reviewed 2026-06-03. Every claim sourced; sources collected at the foot of the page.

Delaware is a high-transfer-tax small state with a famously low property tax base, not a low-cost transactional jurisdiction. The distinction matters because the Delaware realty transfer tax stacks state and county components to a combined 4 percent on most transactions, among the highest closing-tax burdens in the country, even as the property tax base sits well below the national median. Delaware conforms to federal §1031 through Delaware Code Title 30 and taxes recognized boot at the graduated state rate topping at 6.6 percent. The state’s role as the dominant corporate-formation jurisdiction does not affect §1031 mechanics directly but does affect entity selection for many cross-state exchangers. Each of these is independently sourceable.

This page is the working guide. The federal §1031 floor, Delaware’s full conformity, the 4 percent realty transfer tax stack at recording, the structurally low property tax base, the coastal insurance picture along the Delaware Bay and Atlantic shore, the demographic trend, and the unique considerations a Delaware exchanger should clear before identifying replacement.

§1. 1031 mechanics in Delaware

The federal floor applies in Delaware the same way it applies in every other state. 26 U.S.C. §1031 and 26 C.F.R. §1.1031(k)-1 establish the deferral framework with the 45-day and 180-day windows. ^{1 2}

Delaware fully conforms to the federal §1031 treatment at the state income tax level. The conforming provision is in Delaware Code Title 30, which computes Delaware taxable income by reference to federal adjusted gross income with state-level modifications that do not include a §1031 modification. A properly executed exchange that defers gain federally defers it for Delaware income tax purposes at the same time. Recognized boot is taxed at the Delaware graduated rate, with the top marginal bracket at 6.6 percent. There is no separate Delaware capital gains rate. ³

The Delaware realty transfer tax under Delaware Code Title 30, Chapter 54 is the operative state-specific closing cost. The total combined rate runs 4 percent of consideration on most transactions, split equally between the state (2.0 percent) and the county or municipality (2.0 percent in jurisdictions that have authorized the full local-option rate). Some Delaware counties or municipalities have authorized rates below the 2.0 percent local maximum, with corresponding offset at the state level. By default, the tax is split equally between grantor and grantee at 2.0 percent each, though contracts can shift the allocation. On a $5,000,000 commercial acquisition, the combined realty transfer tax runs $200,000, which is materially above most state transfer-tax stacks. There is no §1031 exemption from the realty transfer tax in Delaware. ^{4 5}

Delaware imposes no state-level registration or bonding regime on Qualified Intermediaries. Federal §1031 rules apply. The buyer should confirm independently that the QI carries fidelity bonding and errors-and-omissions coverage proportionate to the transaction size.

Delaware is an attorney-state for real estate closings. Both buyer and seller typically engage Delaware-licensed counsel.

§2. Property tax in Delaware

Delaware has an effective property tax rate of approximately 0.55 percent of owner-occupied housing value, well below the 1.02 percent national median. The structural mechanics are governed by Delaware Code Title 9 (Counties) and Title 14 (Education), with assessment administered at the county level by Kent, New Castle, and Sussex County assessors. Delaware was historically one of the few states that assessed property based on values from a base year that had not been updated since the 1980s. A recent Court of Chancery ruling required reassessment, and the three counties are in various stages of implementing the new base years. ^{6 7}

For an exchanger acquiring Delaware commercial property, the property tax line during the transition between the old and new assessment bases is the operative diligence question. Year-one cash tax may be calibrated to the prior base year; subsequent years will transition to the updated valuation. The cash tax impact of the reassessment varies by property and submarket; some properties will see meaningful increases, others meaningful decreases.

Harlow’s note on unit economics. On a $5,000,000 Delaware commercial acquisition under the prior assessment base, year-one property tax can run as low as $15,000 to $30,000. Under the updated assessment base, the figure can shift materially in either direction. Build the hold-period line from the current and pending assessment base, with the county assessor’s reassessment timeline modeled explicitly. The Delaware reassessment cycle is the single largest underwriting variable on Delaware commercial property in the current transition period.

§3. Property insurance in Delaware

Delaware property insurance carries Atlantic coastal hurricane exposure (Sussex County, Rehoboth, Bethany, Dewey, Fenwick, the Cape Region), Delaware Bay flood exposure, and inland severe-weather exposure across New Castle and Kent Counties. There is no Delaware FAIR Plan or windstorm pool; the private market handles underwriting, with E&S lines filling gaps in the coastal zones. The Delaware Department of Insurance regulates carrier conduct. ⁸

For an exchanger acquiring Delaware coastal commercial property, the binding-quote discipline applies. Named-storm deductibles and flood-zone determinations are central. Inland Delaware commercial property runs functional with private-market underwriting.

Harlow’s note on unit economics. For a $5,000,000 Delaware inland commercial property, expect property-insurance expense in the range of 0.4 to 0.8 percent of insured value. For coastal Sussex County property, the range can run 0.8 to 1.6 percent with separate flood adding 0.1 to 0.3 percent.

§4. Demographic trends

Delaware’s population stood at approximately 1.05 million as of 2025 Census estimates, with modest positive net migration concentrated in Sussex County (driven by retiree migration and second-home demand). New Castle and Kent Counties run roughly flat. The state’s growth rate is modest but positive. ^{9 10}

Median household income in Delaware was approximately $82,000 in 2024 per Federal Reserve-published Census American Community Survey estimates, slightly above the national median. New Castle County (Wilmington corridor) carries the highest median; Sussex carries strong retiree-driven income; Kent runs below. ^{11 12}

The major Delaware metropolitan markets relevant to 1031 exchangers are New Castle County (the Wilmington corridor and northern Delaware, approximately 575,000 population and the deepest commercial market), Sussex County (the coastal and central southern Delaware corridor, approximately 260,000 and the strongest growth signal), and Kent County (the Dover and central Delaware corridor, approximately 195,000). New Castle concentrates the deepest office, industrial, and multifamily markets; Sussex concentrates hospitality, second-home residential, and emerging multifamily and retail; Kent serves the state-government and agricultural-services economy.

§5. Unique legal and financial considerations

The first is the 4 percent realty transfer tax stack, addressed in §1. The cost is material on disposition and acquisition and should be reflected in offer-price modeling.

The second is the Court of Chancery reassessment ruling. The ongoing transition between the old and new assessment bases affects year-one and out-year property-tax economics on every Delaware acquisition. Confirm the county’s reassessment status at closing.

The third is Delaware’s role as a corporate-formation jurisdiction. Many 1031 exchangers structure replacement-property ownership through Delaware LLCs even when the underlying real property is in other states. This is a Delaware corporate-law question, not a Delaware real estate question, but it interacts with the choice of which state’s law governs the operating agreement and the related QI custody arrangements.

The fourth is the absence of a sales tax. Delaware has no state-level sales tax, which affects tenant economics on retail and hospitality property in ways that distinguish Delaware from neighboring Maryland, New Jersey, and Pennsylvania.

The fifth is the agricultural land preservation program, which has restricted development on protected farmland in Sussex and Kent Counties. Acquisition of preservation-encumbered land carries use restrictions worth diligencing.

§6. Closing summary and the work ahead

The Delaware 1031 exchanger is operating in a market with a clear set of distinguishing features. The federal floor applies; Delaware fully conforms at a graduated rate topping at 6.6 percent; the 4 percent realty transfer tax stack at recording is among the highest in the country with no §1031 exemption; the property-tax base is in transition between old and new assessment bases following the Court of Chancery ruling; insurance exposure varies between the Atlantic coastal corridor and the inland private market; Sussex County is the strongest growth corridor; the corporate-law context is distinct from the real estate context but interacts with entity selection; agricultural preservation encumbrances apply in selected areas. None of these is a reason to avoid a Delaware exchange. Each is a reason to underwrite one carefully. The jurisdiction-specific factors above are starting-point context. A state-experienced CRE professional will translate them into deal-specific judgment.

This is the question Shop 1031 was built to compress. Every Delaware offering memorandum on the platform is normalized to a single schema, underwritten at re-let to the buyer’s specific equity, debt, and DSCR floor, and ranked by Dark Shell Score. For a market with Delaware’s specific overlay, that compression is decisive because the variables that move outcomes (4 percent transfer-tax stack on disposition and acquisition, reassessment timing, coastal insurance binding, preservation encumbrance review) are knowable in advance and frequently missed in conventional buy-side workflows.

This page is the working map. The actual exchange is run by people. A Delaware-licensed real estate attorney, a Delaware-licensed CPA familiar with §1031, a Qualified Intermediary, and a CRE professional who knows this market and these properties. Shop 1031 is the analytics layer that triages which deals deserve your time. The professionals do the work.

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Shop 1031 is an independent analytics platform. We are not a brokerage, a law firm, a tax advisor, a lender, or a Qualified Intermediary. Every 1031 exchange should be reviewed by a state-licensed real estate attorney, a CPA familiar with IRC §1031, and a QI. Brokerage and advisory services, when used, are provided by independently licensed third parties under separate engagement. This page is research, not advice. The Delaware-specific surfaces discussed (4 percent realty transfer tax with no §1031 exemption, transition between old and new property-tax assessment bases, coastal Atlantic and Delaware Bay exposure, agricultural preservation encumbrances) each carry material risk if mishandled and should be addressed with a Delaware-licensed attorney, a Delaware-licensed CPA, and a Qualified Intermediary before identification, not after.

Federal authority: 26 U.S.C. §1031; 26 C.F.R. §1.1031(k)-1.

Delaware authority: Del. Code Title 30 (Taxation), Ch. 54 (Realty Transfer Tax); Title 9 (Counties); Title 14 (Education); applicable Court of Chancery rulings on reassessment.

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