My husband and I are in the Seattle area looking to potentially partner on a multifamily home deal in Tacoma.

If you include door-knocking, I can assure you that it works.Here are the issues, as I see them:All sales and marketing, including useing the telephone, are merely media; a substitute for nose-to-nose, toes-to-toes direct to person selling.Strategies like direct response advertising such as mail, requires the recipient to read an envelope or card, perhaps open a letter, make snap decision as to their interest, and respond by calling (offline) or going to a website or squeeze page or similar action.People who are difficult to find (skipped, frequent movers, etc.) are less likely to be reached by mail, let alone respond.

I've been checking out Tacoma, Spokane, and Bremerton.

I considered using my outlandishly deep knowledge of the Cleveland market to add a subjective overlay in cases where the data seemed skewed by something like a subsidized senior citizen high-rise (dragging down incomes, homeowner rates, etc. and therefore causing an undue hit to the area's grade... think the apartment buildings on Clifton in Edgewater for example) or a semi-fancy newer development surrounded mostly by rather dumpy older stuff (pulling up incomes, homeowner rates, etc. and therefore causing an undue boost to the area's grade... think Mill Creek off of Turney for example) but I decided against it mainly because I didn't want to allow subjectivity into it at all and then get accused of encouraging discriminatory practices or any bs like that.But... at the end of the day James you do have that first mover advantage (and I commend you for making the map in the first place even though I disagree with some of your assessment), so you'll likely continue to get the majority of the traffic, at least for the foreseeable future.

I just had a situation where a tenants movers unhooked the hoses for the washing machine upstairs and left them hanging.  

Join a service organization that has movers and shakers (Rotary, Kiwanis etc).

professional movers move in and out plus a cleaning company afterwards. 

It seems like a Tacoma multi family is going to be the safer route but I'd be interested in taking with anyone who has experience here.

The wrong comma can delay your case.You'll also need to have their bonded movers ready, and people to move the junk off the street when the job is done.

As mentioned before, highly recommend if your looking to network & meet the shakers & movers.