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Seattle, WA HOA Rules: Architectural Review (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Governing Law
RCW 64.90 (WUCIOA)
Committee Meetings
Open to all owners
Written Guidelines
Must be documented and applied consistently
Protected Displays
U.S. flag, political signs during elections
Denial Notice
Must be in writing with specific basis

Summary

HOA architectural review in Seattle is governed by WUCIOA (RCW 64.90) and each association's declaration and CC&Rs. Architectural committees must apply standards consistently and provide written guidelines. Under WUCIOA, owners may attend architectural review committee meetings. Associations cannot prohibit display of the U.S. flag, Washington state flag, or certain political signs.

RCW 64.90.510 — Regulatory authority — Limitations — Governing documents — Association may adopt certain rules. (1)(a) An association may not prohibit display of the flag of the United States, or the flag of Washington state, on or within a unit or a limited common element, except that an association may adopt reasonable restrictions pertaining to the time, place, or manner of displaying the flag of the United States necessary to protect a substantial interest of the association. [...] (2) An association may not prohibit display of signs, including outdoor signs, regarding candidates for public or association office, or ballot issues, on or within a unit or limited common element, but an association may adopt reasonable rules pertaining to the placement and manner of those displays. (3) The association may not prohibit the installation of a solar energy panel on or within a unit so long as the solar panel: (a) Meets applicable health and safety standards and requirements imposed by state and local permitting authorities [...]. (4) The association may not prohibit a unit owner from storing containers for municipal or private collection, such as compost, garbage, and recycling receptacles, in any private garage, side yard, or backyard reserved for the exclusive use of a unit. However, the association may adopt and enforce rules requiring that such receptacles be screened from view and establishing acceptable dates and times that such receptacles may be presented for collection. [...] (10) An association may adopt rules that affect the use or occupancy of or behavior in units that may be used for residential purposes, only to: (a) Implement a provision of the declaration; (b) Regulate any behavior in or occupancy of a unit that violates the declaration or adversely affects the use and enjoyment.

Source: RCW 64.90.510 - Powers of Unit Owners' AssociationView official code

Full Breakdown

Architectural review in Seattle HOAs is conducted by Architectural Control Committees (ACCs) established through each association's declaration. WUCIOA (RCW 64.90) requires that all committee meetings, including architectural review meetings, be open to owners. Associations must maintain written architectural guidelines and apply them consistently across all owners to avoid selective enforcement claims. Under RCW 64.90.510, associations may regulate the use, maintenance, repair, replacement, and modification of common elements and units, but restrictions must be reasonable and applied uniformly. WUCIOA protects the right to display the U.S. flag and limits restrictions on certain political signs during election periods. Associations must provide written notice of any architectural denial, including the specific provisions violated and the basis for the decision. Seattle does not impose municipal-level architectural review beyond its own building permit and zoning requirements, which apply independently of HOA rules.

Violations & Fines

If an architectural request is denied, the association must provide written notice stating the specific provisions violated. Owners who believe decisions were arbitrary or inconsistently applied may pursue dispute resolution under WUCIOA. Courts may void architectural decisions found to be unreasonable or selectively enforced.

Frequently Asked Questions

Can a Seattle HOA deny all exterior modifications?
Associations may regulate modifications but must apply standards consistently and reasonably. Blanket prohibitions without documented guidelines may be challenged under WUCIOA.
Can I attend my HOA's architectural review committee meetings?
Yes. Under WUCIOA, all committee meetings including architectural review must be open to unit owners.

Sources & Official References

Other rules in Seattle

All Seattle rules

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