HOA questions
Can an HOA Ban Permanent Christmas Lights?
Some associations can restrict permanent exterior lighting and some cannot. What tends to matter in practice, and how to approach the conversation properly.

Yes, some associations can restrict permanent exterior lighting. Others do not address it at all. A few address it in language written before permanent systems existed, which is its own kind of problem.
We are not going to tell you your lighting is HOA approved, because no lighting system is universally approved and anyone claiming otherwise is telling you something they cannot know. What we can tell you is what tends to matter when the question comes up.
Start with your governing documents
Check the CC&Rs and any architectural guidelines before you get attached to an idea. Look for language about permanent exterior fixtures, roofline attachments, exterior color, seasonal decorations and how long they may remain, and any architectural review requirement for exterior modifications.
If there is a review process, expect to go through it. That is not a reason to avoid permanent lighting, and plenty of homes in association neighborhoods on the Sammamish plateau and in Mill Creek have it. It is a reason to plan for the timeline.
What tends to matter in practice
Associations that scrutinize permanent lighting are usually worried about two things: conspicuous hardware on the building exterior, and displays that stay bright year-round.
A system that addresses both is a different conversation than one that does not.
How to approach the conversation
Bring specifics rather than a brochure. Track color matched to your existing trim, where exactly it would run, that it dims, and what it looks like turned off. Daytime photos of a completed installation do more work here than any description.
If your association requires architectural review, we are glad to answer their questions about the system, including how far the brightness can be turned down. What we will not do is tell you it is pre-approved, or characterize what your particular association will decide.
If your HOA says no
Seasonal installation remains available, and it sidesteps the permanent-hardware question entirely. Nothing stays on the house after January. It costs more over time, but it is a legitimate answer to a legitimate constraint.

