There is much divisible privately held residential and agricultural land. To develop it the owner must.
Dedicate as much as 60% of the land as “open space”
Hire a biologist.
Hire an archeologist who could potentially trigger a huge review(this is churning work).
Hire engineers/surveyors(these things can be done with legal descriptions only)
Hire a fire hazard study consultant(or something like that)
Pay tens of thousand for review of this work by local governments and perhaps also the state, depending on some circumstances.
It has not always been this way and there is much of the U.S where a subdivision can be done on paper for chicken feed, compared to what it takes around here. One day someone will be able to buy the open space back into use(or it will be given to Corky Mcmillin) and the biological studies (which are mostly just churning work) will be rendered irrelevant.