Idaho HOA ADUs & Modifications

Overview: ADUs and modifications in Idaho

Start with what Idaho law now does. The state's Homeowner's Association Act protects rooftop solar, political signs, and flag display; it limits how an association may fine its members; and, as Senate Bill 1354 amended it effective July 1, 2026, it forbids an HOA from limiting or prohibiting an accessory dwelling unit (ADU) unless the owner of the affected property agrees in writing.¹ Two statutes and the recorded governing documents carry the weight here. The Homeowner's Association Act, at Idaho Code Title 55, Chapter 32, governs planned communities; the Idaho Condominium Property Act, at Title 55, Chapter 15, governs condominiums.² The solar, sign, flag, rental, and ADU provisions live in Chapter 32 at §§ 55-3208 to 55-3212, where the 2022 Act consolidated them from the superseded § 55-115.³ Timing matters. Until June 30, 2026, § 55-3212 reached internal ADUs only and left detached ADUs to the covenants — a narrower reach than California's statewide all-ADU rule or Colorado's subject-jurisdiction rule. Senate Bill 1354 widened the section to cover all ADUs under a consent model, and that change moves Idaho toward the protective end of the national spectrum.⁴ Four federal overlays apply no matter what Idaho law says: the Freedom to Display the American Flag Act for the U.S. flag, the OTARD Rule for antennas and satellite dishes, the Fair Housing Act for reasonable modifications tied to disability, and ADA Title III for common-area public accommodations.⁵ The sections that follow lay out the legal framework, the compliance obligations it creates, the recent moves in the legislature and the courts, and where Idaho stands nationally.

The legal framework

Architectural review authority and the 2022 HOA Act

In an Idaho planned community, architectural review authority begins with the recorded declaration of covenants, conditions, and restrictions, and the Homeowner's Association Act (Title 55, Chapter 32) supplements it.⁶ Condominiums answer to a different statute — the Idaho Condominium Property Act (Title 55, Chapter 15), a traditional condominium law the legislature first enacted in 1965. Idaho has not adopted the Uniform Common Interest Ownership Act, so do not assume UCIOA features apply.⁷ An incorporated association also follows the Idaho Nonprofit Corporation Act (Title 30, Chapter 30) for its corporate formalities.⁸ The 2022 Act (House Bill 703) folded the HOA provisions once housed at § 55-115 into Chapter 32; those current sections now state the operative law, and you should cite § 55-115 only as the historical source.⁹ The declaration usually creates an architectural control committee and sets the standards for submission, review, and approval; the Act itself prescribes no committee structure. Two Chapter 32 limits bear directly on enforcement and amendments. First, § 55-3206 restricts fining: the covenants must clearly grant the authority to fine, the board must approve by majority vote, and the association must give written notice at least 30 days before the meeting, by personal service or certified mail.¹⁰ Second, a board may not use its rulemaking power over common property to expand the restrictive covenants as they apply to a member's property (§ 55-3204), and the rental provision at § 55-3211 shows the governing pattern: the association cannot impose new, more restrictive covenants on an existing owner without written consent.¹¹

Protected modifications: solar, signs, flags

Section 55-3208 protects solar. No HOA may add, amend, or enforce any covenant, condition, or restriction that prohibits a homeowner from installing solar panels or collectors on the rooftop of property within the association's jurisdiction. The HOA keeps two regulatory powers: it may set the specific roof location, as long as it permits an orientation to the south or within 45 degrees east or west of due south, and it may adopt reasonable rules that track the building code — for instance, requiring panels to run parallel to the roofline and conform to the roof slope, with any frame, bracket, or visible piping or wiring painted to match the roofing material.¹² Section 55-3209 protects political signs: no HOA may prohibit or effectively prohibit their display, subject to reasonable rules on time, size, place, number, and manner.¹³ Section 55-3210 protects flags: no HOA may bar display of the U.S. flag, the Idaho state flag, the POW/MIA flag, or the flag of a branch of the U.S. armed forces, subject to reasonable rules on flagpole construction, zoning, easements, setbacks, and maintenance, and to the rule that the U.S. and Idaho flags be displayed in accordance with 4 U.S.C. § 5 et seq.¹⁴ In each case, the bar on prohibition stands apart from the reasonable rule the statute still allows. Idaho has no HOA EV-charging statute and no HOA landscaping or drought-tolerant-landscaping statute; Chapter 32 covers solar, signs, flags, rentals, and ADUs, but not those categories, so the recorded covenants govern EV charging and landscaping modifications.¹⁵

ADUs and federal overlays

Senate Bill 1354, effective July 1, 2026, retitles § 55-3212 "Prohibited conduct — restrictions on accessory dwelling units." Under it, no HOA may add, amend, or enforce any covenant, condition, or restriction that limits or prohibits an ADU, as § 67-6541 defines it, unless the owner of the affected property agrees in writing. The HOA may still adopt reasonable use rules — architectural design consistent with the primary dwelling, plus size, height, setback, open-space, parking, and bedroom requirements — and it may adopt a less restrictive ADU definition of its own.¹⁶ Section 67-6541 defines an ADU as a self-contained living unit, with its own cooking, sleeping, and sanitation facilities, on the same lot as a single-family primary dwelling; it may be internal, attached, or detached, but it excludes a motorhome, camper, recreational vehicle, tiny home on wheels, or similar dwelling on wheels.¹⁷ This marks a real change from the version House Bill 166 created in 2023. That earlier law, titled "Internal accessory dwelling units," reached internal ADUs only, barred only covenants that "strictly prohibit" one internal ADU per homestead, and left detached ADUs to the covenants.¹⁸ Any ADU still calls for a two-layer analysis: municipal or county zoning on one side, the covenants and § 55-3212 on the other. California's Civil Code § 4751 (all ADUs and JADUs, judged by an unreasonable-restriction standard) and Colorado's HB 24-1152 (subject jurisdictions) reach ADUs by different routes.¹⁹ Four federal overlays bind every association: the Freedom to Display the American Flag Act of 2005, the OTARD Rule at 47 C.F.R. § 1.4000, the Fair Housing Act at 42 U.S.C. § 3604(f)(3), and ADA Title III.⁵

Compliance obligations created by the framework

A. Architectural review process obligations

The steps for application, submission, decision, and appeal come from the covenants, which the Act does not override, and they apply to both planned communities and condominiums. Recordkeeping: an association must keep the minutes of its board and membership meetings for at least ten years under § 55-3204 (state statute; planned communities).¹¹ Fining procedure: the association may impose no fine for a covenant violation unless the covenants clearly grant the authority, the board approves by majority vote, and the member receives 30-day written notice by personal service or certified mail, all under § 55-3206 (state statute; planned communities).¹⁰ And if a member begins resolving the violation in good faith before the meeting, the association may impose no fine while the member keeps working at it (state statute; planned communities).¹⁰

B. Modifications the association must permit

An association must permit rooftop solar under § 55-3208, subject to the southern-orientation location control and reasonable appearance rules (state statute; planned communities).¹² It must permit political signs under § 55-3209, subject to reasonable time, place, and manner rules (state statute; planned communities).¹³ It must permit the U.S., Idaho, POW/MIA, and military flags under § 55-3210, subject to reasonable flagpole and maintenance rules (state statute; planned communities).¹⁴ The Freedom to Display the American Flag Act separately protects the U.S. flag (federal; applies to both).²⁰ OTARD protects antennas and satellite dishes (federal; applies to both).²¹ The Fair Housing Act requires the association to permit reasonable modifications tied to disability, at the resident's expense (federal; applies to both).²² ADA Title III reaches common-area facilities that serve as public accommodations (federal; applies to both).²³ In each case, the bar on prohibition stands apart from the reasonable rule the law still allows.

C. ADU obligations and limits on HOA authority

Under § 55-3212 as amended, an HOA may not limit or prohibit an ADU (as § 67-6541 defines it) without the affected owner's written consent (state statute; planned communities).¹⁶ The HOA may adopt reasonable use rules, including architectural design consistent with the primary dwelling, plus limits on size, height, setbacks, parking, and bedrooms (state statute; planned communities).¹⁶ Any ADU also needs municipal or county zoning approval and must comply with the covenants (covenants and local ordinance; applies to both).¹⁷

D. Enforcement, dispute resolution, and appeal obligations

The fining limits and the notice-and-opportunity-to-be-heard requirements of § 55-3206 apply before the association imposes any fine (state statute; planned communities).¹⁰ Attorney's fees and costs may not begin to accrue until the association has complied with § 55-3206 (state statute; planned communities).¹⁰ Any requirement to use alternative dispute resolution comes from the covenants (applies to both). Trial-level disputes proceed in the Idaho District Courts; appeals go to the Idaho Supreme Court, which may assign a case to the Idaho Court of Appeals (state court rule; applies to both).²⁴

Recent legislative and judicial activity

A. Recent bills

Two earlier bills frame the current law. House Bill 166, in 2023, created the original internal-ADU protection at § 55-3212.¹⁸ House Bill 361, in 2025 (Session Law Chapter 204), added declarant-control, board-membership, and proxy-vote rules for associations formed after July 1, 2025.²⁷

B. Recent appellate rulings

Two decisions from the Idaho Supreme Court shape the current landscape — one on adding rental restrictions by amendment, and one on assessing an association's own litigation fees against its members.

C. Active legislative debates

House Bill 708 (2026) would have set HOAs to dissolve automatically (under a proposed § 55-3204C) unless the members voted to continue them. It did not pass. But the idea returned later in the session as House Bill 963, and the debate over how much control owners hold over long-standing associations remains very much alive.³⁰

National positioning and related coverage

On solar, signs, and flags, Idaho sits toward the protective end. Section 55-3208 bars any HOA ban on rooftop solar, which puts Idaho alongside solar-protective states such as Hawaii, California, and Arizona.³¹ On ADUs, the picture changed on July 1, 2026. The old § 55-3212 protected internal ADUs only and left detached ADUs to the covenants — a narrower reach than California's statewide all-ADU rule (Civil Code § 4751) or Colorado's subject-jurisdiction rule (HB 24-1152). Senate Bill 1354 changed that. Section 55-3212 now bars an HOA from limiting or prohibiting any ADU — internal, attached, or detached — without the affected owner's written consent, which moves Idaho into the broad-protection category, though it works through a consent model rather than California's unreasonable-restriction standard.¹⁹ Silent states such as Georgia, Alabama, and Arkansas leave ADUs entirely to the covenants. For a multi-state operator, the practical takeaway is straightforward: in Idaho, an HOA cannot ban rooftop solar and cannot bar an ADU without recorded owner consent, but it keeps reasonable rule-making power over design, placement, and use.

Federal frameworks — the Freedom to Display the American Flag Act, OTARD, the Fair Housing Act, and the ADA — apply to Idaho associations regardless of the state framework.

Recommendations

1. Immediate, before your next architectural-review cycle: pull every ADU-related covenant and rule, and confirm that none operates to limit or prohibit an ADU against an owner who has not consented in writing. As of July 1, 2026, § 55-3212 makes an outright ADU ban unenforceable without recorded owner consent. Escalate to counsel the moment you find a covenant that flatly bars detached structures, granny flats, or secondary units.
2. Near-term, this quarter: audit your fining workflow against § 55-3206 — fine authority stated in the covenants, a majority board vote, 30-day notice by personal service or certified mail, and no fine once a member begins a good-faith cure. A fine imposed without those steps, or attorney's fees accrued before compliance, is the benchmark that exposes the association to a fee-shift under § 55-3204(8).
3. Near-term: separate the state layer from the federal layer in every rule template. Solar, signs, and flags fall under Chapter 32; antennas (OTARD), the U.S. flag (Freedom to Display Act), disability modifications (FHA), and common-area accessibility (ADA) are federal and apply even where Chapter 32 says nothing. Do not draft an Idaho EV-charging or landscaping "right" — none exists, and those modifications stay covenant-governed.
4. For cities over 10,000 in population: coordinate your association ADU rules with the municipal duty under § 67-6541 to allow at least one ADU per single-family lot by February 1, 2027. The city population line and each city's code-amendment date are what change the analysis.
5. Ongoing: watch the 2027 session for a revived HOA-dissolution measure — the House Bill 708 / House Bill 963 line. If the legislature enacts a dissolution-by-default framework, association continuity planning becomes a board-level priority.

Caveats

• Timing sits at the center of this page. Senate Bill 1354's amendment to § 55-3212 carried an emergency clause and took effect July 1, 2026 — two weeks before this page's verification date — and the Idaho Legislature's live statute page already shows the amended, all-ADU text. Any association or adviser still relying on secondary sources that describe § 55-3212 as an "internal ADU only" or "strictly prohibits" provision is working from superseded law.
• The § 67-6541 population threshold reads "greater than five thousand (5,000)" in the enrolled Senate Bill 1354 text on legislature.idaho.gov, while several contemporaneous news and industry summaries report a "population over 10,000" threshold following a Senate amendment. Resolve this discrepancy against the final codified text of § 67-6541 before relying on the page for a specific city; the HOA-layer analysis in § 55-3212 does not turn on the threshold.
• Many aggregator and law-firm pages still cite the superseded § 55-115 as the current authority on solar, signs, flags, or ADUs. The operative provisions are §§ 55-3208 to 55-3212; § 55-115 is historical only.
• Idaho has no dedicated HOA regulator and does not license community association managers. The Idaho Real Estate Commission, through the Division of Occupational and Professional Licenses, regulates real estate licensees only, and it states that the state does not regulate property managers or homeowner's associations. Enforcement runs through the members and the courts.
• The federal statutes noted here bind associations but carry their own enforcement limits. The Freedom to Display the American Flag Act, for example, contains no private right of action, and courts have declined to imply one.

1. Idaho Code § 55-3212, Prohibited conduct — restrictions on accessory dwelling units (current text as amended by S.B. 1354) (Idaho State Legislature) ↩
2. Idaho Code § 55-1501 et seq., Condominium Property Act (Idaho State Legislature) ↩
3. Idaho Code tit. 55, ch. 32, Homeowner's Association Act, §§ 55-3201 to 55-3213 (section index) (Idaho State Legislature) ↩
4. S.B. 1354, 2026 Leg., Reg. Sess. (Idaho 2026) (amending Idaho Code § 55-3212 and adding Idaho Code § 67-6541) (Idaho State Legislature) ↩
5. Over-the-Air Reception Devices Rule, 47 C.F.R. § 1.4000 (FCC); see also Freedom to Display the American Flag Act of 2005, Pub. L. No. 109-243, 120 Stat. 572; Fair Housing Act, 42 U.S.C. § 3604(f)(3); Americans with Disabilities Act tit. III ↩
6. Idaho Code § 55-3201, Short title (Homeowner's Association Act) (Idaho State Legislature) ↩
7. Idaho Code § 55-1501, Short title (Condominium Property Act; enacted 1965) (Idaho State Legislature) ↩
8. Idaho Code § 30-30-101 et seq., Idaho Nonprofit Corporation Act (Idaho State Legislature) ↩
9. Idaho Code tit. 55, ch. 32 (full text; § 55-3201 added 2022, ch. 323, § 4) (Idaho State Legislature) ↩
10. Idaho Code § 55-3206, Violations — due process and notice — limitation on fines — attorney's fees (Idaho State Legislature) ↩
11. Idaho Code § 55-3204, Administration of an incorporated or unincorporated homeowner's association (minutes retention; rulemaking limit; attorney-fee award) (Idaho State Legislature) ↩
12. Idaho Code § 55-3208, Solar panels (Idaho State Legislature) ↩
13. Idaho Code § 55-3209, Political signs (Idaho State Legislature) ↩
14. Idaho Code § 55-3210, Flags (display in accordance with 4 U.S.C. § 5 et seq.) (Idaho State Legislature) ↩
15. Idaho Code tit. 55, ch. 32 (section index; no EV-charging or landscaping provision) (Idaho State Legislature) ↩
16. Idaho Code § 55-3212, Prohibited conduct — restrictions on accessory dwelling units (current text as amended by S.B. 1354) (Idaho State Legislature) ↩
17. S.B. 1354, 2026 Leg., Reg. Sess. (Idaho 2026) (Idaho Code § 67-6541, definition of accessory dwelling unit) (Idaho State Legislature) ↩
18. H.B. 166, 2023 Leg., Reg. Sess. (Idaho 2023) (Senate amendment; original Idaho Code § 55-3212, "Internal accessory dwelling units") (Idaho State Legislature) ↩
19. Colo. H.B. 24-1152 (2024), Accessory Dwelling Units (Colorado General Assembly); cf. Cal. Civ. Code § 4751 ↩
20. Freedom to Display the American Flag Act of 2005, Pub. L. No. 109-243, 120 Stat. 572 (GovInfo) ↩
21. Over-the-Air Reception Devices Rule, 47 C.F.R. § 1.4000 (Federal Communications Commission) ↩
22. Fair Housing Act, 42 U.S.C. § 3604(f)(3) (reasonable modifications) (GovInfo) ↩
23. Americans with Disabilities Act tit. III, 42 U.S.C. § 12181 et seq. (public accommodations) (U.S. Department of Justice, ADA.gov) ↩
24. Idaho App. R. 108, Assignment of cases (Supreme Court assigns cases to the Court of Appeals) (Idaho Supreme Court) ↩
25. S.B. 1354, 2026 Leg., Reg. Sess. (Idaho 2026), bill status and actions (Session Law ch. 265; signed Mar. 31, 2026) (Idaho State Legislature) ↩
26. S.B. 1354, 2026 Leg., Reg. Sess. (Idaho 2026) (Idaho Code § 67-6541; city land-use duties, population threshold, compliance date) (Idaho State Legislature) ↩
27. H.B. 361, 2025 Leg., Reg. Sess. (Idaho 2025), Session Law ch. 204 (declarant control, board membership, proxy votes) (Idaho State Legislature) ↩
28. N. Henry's Lake Homeowners Ass'n v. Norton, No. 51990 (Idaho Jan. 6, 2026) (Idaho Supreme Court) ↩
29. Miller v. Rocking Ranch No. 3 Prop. Owners' Ass'n, No. 49371 (Idaho Jan. 12, 2024) (Idaho Supreme Court) ↩
30. H.B. 708, 2026 Leg., Reg. Sess. (Idaho 2026) (automatic dissolution of homeowner's associations; proposed Idaho Code § 55-3204C) (bill text) ↩
31. Community Associations Institute, Solar Rights — Idaho (§ 55-3208 text and multistate context) ↩