The Capital of Zygethia (Zygeth), will be split into plots of land, with the Central Plot (most likely the biggest) being the Capital Keep, the allotments are as follows (Note the wording of the plots is just there to give a idea of it's indented usage) .

Small Allotment - 32ft x 16ft You could build a storage site, use it to grow your own goods to sell in the market et..

Single Housing plot - 32ft x 32ft Big enough to build a house

Commercial plot - 50ft x 50ft use it to make a workshop or something similar.

These are current plots, they'll grow and change over time, when the town is set up, you must apply for a plot from the Realm (it'll be down to the ruling liege of the area to decide, or he can delegate the role to his Steward.

I like them, the 'Capital plot' will most likely not be named that, but thanks for the effort.

Also the plots may seem small, but these are the most common ones, for example these would be used for Holds and Larger villages.