Delaware HOA ADUs & Modifications

Key Findings

• DUCIOA governs the communities built after it took effect; the older Unit Property Act still governs the condominiums that opted in before then. Delaware codified DUCIOA at 25 Del. C. ch. 81 (§ 81-101 et seq.), built it on the 2008 Uniform Common Interest Ownership Act, and made it effective September 30, 2009. The Unit Property Act sits at 25 Del. C. ch. 22 (§ 2201 et seq.).
• Delaware writes no standalone statewide architectural-review statute. Architectural authority lives in the recorded declaration, and the association exercises it through DUCIOA's rulemaking mechanism (§§ 81-302(a)(16), 81-320).
• A covenant-voiding statute protects solar; nothing comparable protects EV charging. Section 318 voids any covenant that effectively prohibits or unreasonably restricts a solar energy system, but Delaware has passed no equivalent override for EV charging that reaches associations.
• ADUs come down to county and municipal zoning plus the declaration. New Castle County handles ADUs in its Unified Development Code (Chapter 40); Kent County adopted a dedicated ADU chapter (Chapter 101).
• Federal overlays bind every association no matter what state law says: display of the U.S. flag, FCC OTARD antennas, Fair Housing Act reasonable modifications, and ADA Title III public accommodations in common areas.
• The court structure is distinctive, and the state's ombudsperson focuses on education. The Common Interest Community Ombudsperson in the Department of Justice (29 Del. C. subch. IV) offers education and dispute resolution — not a ruling on any architectural decision.

Details

Section 1: Overview

Delaware is a modern Uniform Common Interest Ownership Act state, and here is what that means on the ground: county and municipal zoning govern accessory dwelling units (ADUs), and no Delaware statute overrides an HOA or condominium declaration that bars them. Communities created after September 30, 2009 answer to the Delaware Uniform Common Interest Ownership Act (DUCIOA), codified at 25 Del. C. ch. 81 (§ 81-101 et seq.).¹ Older condominiums recorded under the Unit Property Act, 25 Del. C. ch. 22 (§ 2201 et seq.), stay under that Act,² and preexisting communities pick up the enumerated DUCIOA sections only for events and circumstances that occur after the effective date.¹ Whether an owner may actually build an ADU turns on two things: county or municipal zoning — New Castle, Kent, and Sussex counties, plus municipalities such as Wilmington^3,4 — and the recorded declaration, which is the binding constraint inside an HOA or condominium. Authority over solar and electric-vehicle (EV) charging runs through the declaration and the DUCIOA framework, with one important exception: a verified Delaware statute voids covenants that restrict solar energy systems (25 Del. C. § 318).⁵ Several federal overlays bind every association regardless of state law — the Freedom to Display the American Flag Act of 2005,⁶ the FCC OTARD rule for antennas and satellite dishes,⁷ the Fair Housing Act's reasonable-modification requirement,⁸ and ADA Title III for common-area facilities that operate as public accommodations. The sections that follow lay out the framework, the compliance obligations it creates, and the recent activity in the legislature and the courts.

Section 2: The legal framework

2A. Architectural review authority and the role of the declaration

Delaware has no standalone statewide architectural-review statute, so the authority sits in the recorded declaration, read against the DUCIOA framework. Under 25 Del. C. § 81-302(a), a unit owners' association must adopt bylaws and may adopt rules, and § 81-302(a)(16) lets the association establish and enforce construction and design criteria and aesthetic standards in the manner § 81-320 provides.⁹ Section 81-320(b) sets the condition: if the declaration reserves the right under § 81-302(a)(16), the association may adopt rules to establish and enforce those standards — and once it does, it must also adopt procedures for enforcement and for approving applications, including a reasonable time within which the association must act after an owner submits one. Section 81-320(a) requires the executive board to notify every unit owner before it adopts or substantially amends a rule, and to hold a meeting to take comments. For communities created before September 30, 2009 under the Unit Property Act, a recorded code of regulations governs administration (25 Del. C. § 2206), and the council may adopt, alter, amend, and repeal that code and issue rules governing use of the property, subject to a majority of unit owners' right to change those actions (25 Del. C. §§ 2207, 2211).¹⁰ Preexisting communities pick up specified DUCIOA sections only for events and circumstances after the effective date (25 Del. C. § 81-119), and where neither the governing documents nor the Unit Property Act speaks to an issue, DUCIOA controls.¹ When a dispute reaches court, the judge asks a straightforward set of questions: is the restriction enforceable, did the association apply it in a way that is not arbitrary or capricious, and did the owner violate it? Delaware courts treat design covenants as "neither new nor uncommon in Delaware" but warn that they "must be carefully evaluated because their arguably subjective nature introduces the risk of arbitrary and capricious application" (RBY&CC East Side Homeowners Association, Inc. v. Beebe, Master's Final Report, June 9, 2023).¹¹ Covenant-enforcement and injunctive matters usually proceed in the Court of Chancery, which sits in equity.¹²

2B. Protected modifications and federal overlays

On solar, Delaware does more than record easements — it voids covenants. Under 25 Del. C. § 318(b), any covenant, restriction, or condition that effectively prohibits or unreasonably restricts an owner from installing or using a roof-mounted solar energy system is void and unenforceable, and the statute extends to ground-mounted systems on residential lots of one-half acre or greater.⁵ The statute still preserves reasonable restrictions — those that do not significantly raise the system's cost or significantly cut its efficiency or specified performance (25 Del. C. § 318(c)) — and it expressly reaches declarations under the Unit Property Act. A separate provision, the Delaware Energy Act at 29 Del. C. § 8060, also addresses solar restrictions imposed by counties, municipalities, and associations.¹³ On EV charging, the picture changes: Delaware has no statute voiding HOA or condominium covenants over EV charging stations. The state addresses EV charging through building-code requirements for new construction (16 Del. C. ch. 80)¹⁴ and a municipal-permitting statute for residential installations in municipalities of 30,000 or more (22 Del. C. § 119), but neither one overrides an association's covenant the way the solar statute does. The federal overlays bind every association: the Freedom to Display the American Flag Act of 2005 (Pub. L. 109-243, 4 U.S.C. § 5 note) bars an association from restricting a member's display of the U.S. flag on property the member separately owns or exclusively uses; the FCC OTARD rule (47 C.F.R. § 1.4000) bars restrictions that impair the installation, maintenance, or use of covered antennas and satellite dishes in the user's exclusive-use area; the Fair Housing Act (42 U.S.C. § 3604(f)(3)(A)) requires the association to permit reasonable modifications at the resident's expense where they are necessary for full enjoyment of the premises; and ADA Title III (42 U.S.C. § 12181 et seq.) reaches common-area facilities that operate as public accommodations.^6,7,8 Where Delaware has not enacted a covenant-voiding protection, the declaration and the DUCIOA framework control, subject to these federal overlays.

2C. ADUs: county and municipal zoning and the declaration

ADUs in Delaware answer to county zoning (New Castle, Kent, and Sussex counties) and municipal zoning, and the rules vary by jurisdiction. New Castle County addresses accessory dwelling units in its Unified Development Code (Chapter 40 of the county Code), which sets lot-area, setback, and size standards.³ Kent County went further and adopted a dedicated ADU chapter (Chapter 101 of the Kent County Code) that permits ADUs in every residential zone, subject to conditions that include owner-occupancy of one unit on the property.⁴ No Delaware statute overrides HOA or condominium covenants for ADUs, so the analysis runs in two layers: zoning permission at the county or municipal level decides whether the lot may host an ADU, and the recorded declaration decides whether an owner inside a common interest community may build one — with the declaration as the binding constraint. That sets Delaware apart from states that preempt HOA covenants. California Civil Code § 4751(a) makes any governing-document provision that "either effectively prohibits or unreasonably restricts the construction or use of an accessory dwelling unit or junior accessory dwelling unit on a lot zoned for single-family residential use … void and unenforceable," and Colorado's HB 24-1152 similarly reaches HOA covenants. Delaware has passed no equivalent covenant-voiding ADU statute, so an association's declaration may lawfully prohibit or restrict ADUs inside the community even where county zoning would allow one on the lot.

Section 3: Compliance obligations created by the framework

A. Architectural review process obligations

• Application and submission: An association that adopts construction and design criteria under a declaration reservation must also adopt procedures for approving applications, including a reasonable time within which it must act after submission (STATE STATUTE, 25 Del. C. § 81-320(b); post-2009 DUCIOA communities).⁹
• Decision standard and rulemaking notice: Before the executive board adopts or substantially amends a rule, it must notify every unit owner and hold a meeting to take comments (STATE STATUTE, 25 Del. C. § 81-320(a)).⁹
• Written decisions and consistency: A reviewing court asks whether restrictions are enforceable and whether the association applied them without arbitrariness or caprice, so document decisions and apply them consistently (DECLARATION, read against DUCIOA).
• Recordkeeping: Associations must keep specified records at the principal office (STATE STATUTE, 25 Del. C. § 81-318).⁹
• For pre-2009 Unit Property Act communities, review authority comes from the recorded code of regulations and rules (DECLARATION / 25 Del. C. §§ 2206, 2207, 2211).¹⁰

B. Modifications the association must permit

• U.S. flag display (FEDERAL, Freedom to Display the American Flag Act of 2005, Pub. L. 109-243; and STATE STATUTE, 25 Del. C. § 316, plus 25 Del. C. § 81-320(c) for DUCIOA communities): the association may not prohibit display of the U.S. flag within the member's separate ownership or exclusive-use area, subject to reasonable size and placement rules.^5,6
• Antennas and satellite dishes (FEDERAL, OTARD, 47 C.F.R. § 1.4000): the association may not impair installation, maintenance, or use of covered devices in the user's exclusive-use area.⁷
• Disability-related modifications (FEDERAL, FHA, 42 U.S.C. § 3604(f)(3)(A)): the association must permit reasonable modifications at the resident's expense where they are necessary for full enjoyment of the premises.⁸
• Common-area public accommodations (FEDERAL, ADA Title III, 42 U.S.C. § 12181 et seq.).
• Solar energy systems (STATE STATUTE, 25 Del. C. § 318): covenants that effectively prohibit or unreasonably restrict roof-mounted (and qualifying ground-mounted) solar are void and unenforceable, subject to reasonable restrictions; this reaches both DUCIOA and Unit Property Act declarations.⁵

C. ADU obligations and limits on authority

• No Delaware statute requires an HOA or condominium to permit an ADU inside the community, and none voids covenants that restrict them (DECLARATION controls; contrast California Civ. Code § 4751 and Colorado HB 24-1152).
• County or municipal zoning governs whether the lot may host an ADU (LOCAL ZONING; e.g., New Castle County UDC Chapter 40; Kent County Code Chapter 101).^3,4
• The two-layer result: inside a common interest community, an owner needs both zoning permission and a declaration that does not prohibit the ADU. This holds for both post-2009 DUCIOA and pre-2009 Unit Property Act communities.

D. Enforcement, dispute resolution, and appeal obligations

• Notice and opportunity to be heard: after notice and an opportunity to be heard, an association may levy reasonable fines for violations of the declaration, bylaws, and rules (STATE STATUTE, 25 Del. C. § 81-302(a)(11); post-2009 communities), with the rest of the process as the declaration provides.⁹
• Dispute resolution: the Common Interest Community Ombudsperson in the Department of Justice provides education and alternative dispute resolution and requires associations to adopt an internal dispute resolution process (STATE STATUTE, 29 Del. C. subch. IV, §§ 2543-2546); the Ombudsperson does not adjudicate architectural decisions and is not counsel to any party.¹⁵
• Mandatory mediation: an association and a homeowner must mediate a dispute over enforcement of deed covenants or restrictions in the Court of Chancery, with trial before a Magistrate in Chancery and fees shifting to the prevailing party (STATE STATUTE, 10 Del. C. § 348).¹⁶
• Trial and appeal: covenant-enforcement and injunctive matters proceed in the Court of Chancery; actions at law for money damages proceed in the Superior Court (smaller claims in the Court of Common Pleas or the Justice of the Peace Court); and appeals from both go directly to the Delaware Supreme Court — the only appellate court, because Delaware has no intermediate appellate court.^12,17

Section 4: Recent legislative and judicial activity

Delaware's recent HOA-adjacent activity is modest. One bill and two rulings do most of the work of showing where the state is headed on ADUs and architectural enforcement.

A. Recent bills

B. Recent rulings

C. Active legislative debates

The session's most active HOA-adjacent proposal is SB 87, which would require local governments to permit ADUs and would limit covenants restricting ADUs on single-family lots on a forward-looking basis. It remains contested on local-control and HOA-autonomy grounds, and it had not been enacted as of the last verification.¹⁸

Section 5: National positioning and related coverage

Delaware adopted a modern (2008) version of the Uniform Common Interest Ownership Act, effective September 30, 2009, and it places architectural authority in the recorded declaration rather than in a standalone review statute. On ADUs, Delaware has not preempted HOA or condominium covenants: unlike California (Civil Code § 4751) and Colorado (HB 24-1152), which void governing-document restrictions on ADUs, Delaware leaves the declaration controlling inside a community while county and municipal zoning govern the lot. On solar, Delaware does void covenants that restrict solar energy systems (25 Del. C. § 318), which puts it among the states with solar-access protections.⁵ The court structure is distinctive: covenant-enforcement and injunctive matters run through the Court of Chancery, money-damages actions through the Superior Court, and appeals from both go straight to the Delaware Supreme Court, with no intermediate appellate court.^12,17 Delaware's HOA footprint is smaller than that of the larger UCIOA states, and its HOA-specific legislative volume is modest. For a multi-state operator, the practical implication is blunt: a covenant-enforcement playbook built for a preemption state does not carry over. In Delaware the declaration remains the primary constraint on ADUs, and disputes route through equity in the Court of Chancery. This page is updated quarterly, and the federal frameworks — the Freedom to Display the American Flag Act, the FCC OTARD rule, the Fair Housing Act, and ADA Title III — apply to every association regardless of state law.^6,7,8

Recommendations

Stage 1 — Immediate (all associations):

• Figure out which statute governs each community first — DUCIOA (created after September 30, 2009) or the Unit Property Act (older opt-in condominiums) — and whether a preexisting community has opted into any DUCIOA sections. That answer tells you which architectural-authority provisions apply.
• Confirm that the declaration reserves architectural authority (the DUCIOA § 81-302(a)(16) hook) and that the association has adopted written approval procedures with a defined decision timeline (§ 81-320(b)). If those procedures are missing, adopt them before you enforce design standards.
• Update solar policies now. Treat any blanket prohibition as unenforceable under 25 Del. C. § 318, and reduce solar rules to "reasonable restrictions" only — no significant cost increase, no meaningful efficiency loss.

Stage 2 — Near-term (process discipline):

• Standardize written, dated decisions on modification applications and apply the criteria consistently. The enforceability-and-non-arbitrary-application standard in Beebe and Yu v. Cahill rewards contemporaneous documentation.
• Build a federal-overlay checklist into architectural review: U.S. flag, OTARD antennas, FHA reasonable modifications (resident-paid), and ADA Title III common areas. These override any contrary covenant.
• Adopt or confirm an internal dispute resolution process, as the Common Interest Community Ombudsperson framework requires (29 Del. C. subch. IV).

Stage 3 — Watch items and thresholds that would change the analysis:

• ADUs: Track SB 87. If a covenant-voiding ADU statute passes (the current draft targets covenants created or taking effect after June 30, 2027), move ADU enforcement to a forward-looking, reasonable-restriction posture. Until then, existing recorded covenants restricting ADUs stay enforceable, and county or municipal zoning plus the declaration both govern.
• EV charging: If Delaware enacts a covenant-voiding EV-charging statute that reaches associations — as several neighboring states have — shift from full board discretion to a reasonable-restriction or deemed-approval model. No such statute exists today, so the declaration controls EV charging for now.
• Litigation posture: Because deed-restriction disputes carry mandatory Chancery mediation and § 348(e) fee-shifting, weigh settlement value early. A losing enforcement position can carry the other side's fees.

Caveats

• SB 87's status is current as of July 15, 2026 (introduced, reported out of committee May 7, 2025, not enacted). Delaware's General Assembly runs two-year sessions, so verify the bill's current status before you rely on it, and check whether any successor bill has advanced.
• The § 318 solar statute preserves "reasonable restrictions," and what counts as reasonable is fact-specific; the statute voids only covenants that effectively prohibit or unreasonably restrict solar.
• County and municipal ADU treatment varies. This page cites New Castle County (UDC Chapter 40) and Kent County (Code Chapter 101); Sussex County and individual municipalities such as Wilmington and Newark set their own zoning, which you must check lot by lot.
• Beebe is cited here at the trial level (Chancery Master's Final Report, June 9, 2023) with a later Delaware Supreme Court appeal (No. 467, 2023, decided 2024); confirm the appellate disposition against the courts.delaware.gov Supreme Court opinion before you quote the outcome as final in a specific matter.
• The Freedom to Display the American Flag Act contains no private right of action and works chiefly as a prohibition on association policies; its enforcement differs from the state solar statute, which provides fees to the prevailing party.
• This page is regulatory intelligence, not legal advice. Community-specific outcomes depend on the exact declaration language, the community's formation date and statute, and the county or municipality involved.

1. Del. Code tit. 25, ch. 81, subch. I (Delaware Uniform Common Interest Ownership Act; applicability and Sept. 30, 2009 effective date) ↩
2. Del. Code tit. 25, ch. 22 (Unit Property Act) ↩
3. New Castle County, Del., Unified Development Code ch. 40 (accessory dwelling unit lot-area, setback, and size standards) ↩
4. Kent County, Del., Code ch. 101 (Accessory Dwelling Units; owner-occupancy condition) ↩
5. Del. Code tit. 25, § 318 (covenants restricting solar energy systems void and unenforceable; reasonable restrictions preserved); see also §§ 316 (U.S. flag display) and 317 (fees) ↩
6. Freedom to Display the American Flag Act of 2005, Pub. L. No. 109-243, 120 Stat. 572 (codified at 4 U.S.C. § 5 note) ↩
7. Over-the-Air Reception Devices Rule, 47 C.F.R. § 1.4000 (Federal Communications Commission) ↩
8. Fair Housing Act, 42 U.S.C. § 3604(f)(3)(A) (reasonable modifications at the resident's expense) ↩
9. Del. Code tit. 25, §§ 81-302, 81-318, 81-320 (association powers and fines; records; design-criteria rulemaking and application procedures) ↩
10. Del. Code tit. 25, §§ 2206, 2207, 2211 (Unit Property Act; code of regulations and rulemaking; owners' right to change council actions) ↩
11. RBY&CC East Side Homeowners Ass'n, Inc. v. Beebe, C.A. No. 2022-0433-SEM (Del. Ch. June 9, 2023) (Master's Final Report; architectural-review deed restrictions enforced; injunction and § 348(e) fee-shifting), Court of Chancery opinions index ↩
12. An Overview of the Delaware Court System (Court of Chancery equity jurisdiction; Superior Court for damages; direct appeals to the Supreme Court) ↩
13. Del. Code tit. 29, § 8060 (Delaware Energy Act; solar restrictions by counties, municipalities, and associations) ↩
14. Del. Code tit. 16, ch. 80 (electric-vehicle charging building standards for new construction) ↩
15. Del. Code tit. 29, subch. IV, §§ 2543–2546 (Common Interest Community Ombudsperson; education, ADR, and internal dispute resolution requirement) ↩
16. Del. Code tit. 10, § 348 (mandatory Court of Chancery mediation of deed-covenant disputes; trial before a Magistrate in Chancery; § 348(e) fee-shifting to the prevailing party) ↩
17. Delaware Supreme Court (sole appellate court; Delaware has no intermediate appellate court) ↩
18. S.B. 87, 153rd Gen. Assemb. (Del. 2025–2026) (An Act to Amend Title 25 Relating to Housing; one accessory dwelling unit by right; forward-looking covenant limitation as of June 30, 2027) ↩
19. Yu v. Cahill, C.A. No. 2022-0014-SEM (Del. Ch. Jan. 21, 2026) (enforcement of subdivision deed restrictions; fence exceeding recorded four-foot height limit) ↩