(Permits included) (not including foundation)- I have a real estate agent.How can I accurately predict costs?

I know there are some pro's and con's to Montgomery county such as strict inspection and permit rules.

Basically this project will require permits being pulled and an extensive rehab.  

Here's how you can calculate the asking price for the land:Estimate the value of the newly constructed home: This can be done by looking at comparable properties in the area and considering factors such as size, features, and market demand.Calculate the development cost: This will include expenses such as materials, labor, and any necessary permits or fees.Subtract the development cost from the estimated value of the home: This will give you the land value, which can then be used to determine the asking price for the land.For example:Estimated value of the newly constructed home: $500,000Development cost: $100,000Asking price for the land: $500,000 - $100,000 = $400,000I hope this helps!

For example, If your GC tells you he will have the job completed in 1 month, every day he goes beyond that deadline (besides for "unforeseen" circumstances beyond the contractor's control such as weather and permitting) can be an additional $250 credit off your original agreed amount.  

But I'll be looking to buy more later and definitely keeping an eye out for pre built ADUs since my ADU that's being built now at my first home took 12 months to permit.

Our biggest concern is not really understanding the NOO STR regulations/permitting in the area and access to cleaners. 

I know that in Miami you have to be careful of the neighborhoods where it's not allowed and you have to get the permit to do it plus yearly inspections, but is there anything else I'm missing here that makes it impossibly complicated?

The biggest challenge was getting the utilities turned on, as I needed to get the city developer involved in pulling permits and getting the property certified.

Plus, the county of San Bernardino has put a 45 day hold on issuing new STR permits