Or you can download a free program, www.homestyler.com (sorry it's not working for me to insert link with shorter title) You can also take your plan down to a Home Depot or Lowes and see if their planner can give you any ideas.

The company I work for is focused primarily on Industrial Real Estate (warehouses); however, prior to getting into commercial real estate I was a City Planner so I have interest in real estate development as well. 

I know estate planners advocate those, but they always seemed like a way for attorneys to make money to me!

You can also schedule a development meeting with the City planners (free) and talk about your plans with them.Miles

It is unincorporated so my phone call has been forwarded around several times today from the city of Tacoma, to some biologist planner ??

I attempted to bifurcate (divide) the two triplex's to make that opportunity as an exit option, but zoning requirement and city planners would not consider a zoning variance, so that thought went up in smoke.IMO, it's the entry price to MFUs that kill the opportunity for the beginning investor. 

After talking with the city planners, it was determined that there were no 'physical site characteristics' that would warrant a variance approval.

How much it takes to retire depends on a lot of factors, but in general, financial planners use a rough rule of thumb called the 4% rule.

However @Mark Nolan is also correct you can invest with a SOLO 401k so talk to your financial planner and ask them about transitioning what you have into something you can use to invest.

The lot is 46.5' by 150' with 20' and 10' set backs (which can be shortened according to the city planners I spoke with).