All of the barns below have great HJ programs, but would require you to be in training with them:
Archway (h/j)
Brick Road (h/j)
Crooks (h/j)
Far Point (h/j)
Hillcrest (h/j)
Potcreek (h/j)
Carousel - CLOSING EARLY 2017
Charlottewood - decent indoor arena, not huge, some turnout.
Five C (dressage & h/j) - good people, muddy turnout, there is a HJ program that is getting more popular there right now
Goldcreek - very tiny turnouts, TONS of horses for the acreage, quite a few arenas
Grateful Pine - Indoor is very small, can get crowded with lots of riders. Lots of turnouts, some are quite muddy
Phoenix (h/j) - might take outside boarders if there is space, but the arena is 90x140 and the turnouts are less than you want (time wise and mud wise)
Skykomish River - decent arena, quite empty facility, no clue as to turnout
Sundance (h/j) - I believe this program does allow outside boarders
Western Sky - neat people, but they are hoping to fill the barn with western dressage riders or people interested in natural horsemanship.
Willowcrest - Cool facility down in the valley below Woodinville. Indoor arena is VERY narrow, outdoor has fantastic all weather footing and is huge. Stalls are unique: 12x24 shelters attached to 24x24 runs that make an overall 24 foot wide space that is 36’ long for each horse. On top of that, horses can get turned out as much as you want in grass fields. No trainer affiliations or drama.