In Seattle (not going up to Bellingham or Anacortes or down to Tacoma), your two solid options are Pacific Power and Coastal Marine. If you ask around the boating community (incl. this forum), these are the two options you will hear most frequently mentioned and both are well-regarded (I haven't heard anything bad about either).
When we got our boat a year ago, I researched and received quotes from both (as well as a few other options farther afield).
The biggest difference between the two is that Coastal quoted significantly more (on the order of 75-100% more) than what Pacific Power quoted for exactly the same work. Labor rates were comparable, but Coastal estimated a lot more time for the same job (as long or longer than I figured it would take me to do the work myself) and a larger markup for identical Volvo parts (for one part almost 50% more than it would have cost me to order from Fluid Motion). Coastal's estimate really rubbed me the wrong way, as they claimed that's how much it would take to get the job done -- but the labor hours quoted by Pacific Power were in-line with other estimates. Coastal was the outlier.
I ended up going with Pacific Power and was very very happy, will use them again this spring.
scross":3trwz57x said:
I’d recommend Bellingham Yachts up in Bellingham. Worlds biggest Cutwater dealer. Great service staff. Reasonable rates.
I love Bellingham Yachts (we bought our RT from them), but they are not a Volvo dealer. They will outsource to Northwest Diesel Power in Bellingham (IIRC, at no markup), so you can work with them directly. This is what happened for the engine work post-survey when we bought our boat.