Hello, I've been trying to learn everything I can about development and what not while in highschool so I can be as prepared as possible.

It makes me think of investing more in the 'outskirts' of newer developments, like in the Bothell/Woodinville corridor or up in Everett.  

In my opinion, self-development and education are vital for progression.  

Or call the development company myself and talk with them?

I seem to be drowning in land development deals and I don't have any true developers besides one in my rolodex.

I love going to different homes, seeing the vast differences in quality and layout, comparing them to the local market, and putting it all together to make a "big picture".My largest challenge so far is developing an effective marketing system. 

You need to develop strong relationships with owners.

Appreciation is likely to be lower than on developed land, as population/housing is what drives demand in RE.Appreciation itself is speculation, NOT investment. 

In R-1AA, R-1A, R-1, R-1N and R-2A zoning districts an Accessory Apartment, Accessory Cottage, or Garage Apartment may beallowed as a second dwelling unit on a single-family building site under the following conditions:i) Accessory Apartment.(1) Inside the Traditional City, one Accessory Apartment shall be allowed as a Permitted Use when the building site is at least 1.5 times theminimum lot size for the applicable zoning district.(2) Outside the Traditional City, one Accessory Apartment may be allowed as a Conditional Use in accordance with the regulations andprocedures provided in Chapter 65, Part 2D, when the building site is at last 1.5 times the minimum lot size for the applicable zoningdistrict.ii) Accessory Cottage.(1) Inside the Traditional City, one Accessory Cottage shall be allowed as a Permitted Use when the building site is at least 2.0 times theminimum lot size for the applicable zoning district.(2) Outside the Traditional City in the R-1AA, R-1A, R-1 and R-1N Districts, one Accessory Cottage may be allowed as a Conditional Use inaccordance with the regulations and procedures provided in Chapter 65, Part 2D provided that the building site is at least 2.0 times theminimum lot size for the applicable zoning district.(3) In the R-2A district inside and outside of the Traditional City, Accessory Cottages shall be a permitted use provided that the minimumbuilding site area for an Accessory Cottage shall be the same as that required for a duplex development.

Until you know exactly where the flags or boundaries are you are way ahead of your self.A land not able to develop worth =0