Originally, I learned, it was built for one of the heiress of a prominent local family. 

Check out www.fiabci.org with real estate professionals in 60 countries, database with information and international contacts with brokers, architects, managers, lawyers, notaries, appraisers etc.

Their clients wanting to do their own preliminary searches and once they zero in on a half dozen of homes they contact the realtors to arrange visits and personal services, these clients would have hit and miss access to what's available.Second, and as someone who have architected a few commercial engineering automation systems in the past, this will not really stop anything.

Although it has a bunch of information in it that the typical developer doesn't need (specifically a bunch of civil engineering design information - which is weird since the author is an architect.)But I would suggest you would be better served not looking for an all inclusive book, but instead looking for books/information that focus on specific areas of the process.The three areas I have seen developers make their most mistakes over the years are these.Market Research: Projecting what the demand will be for a product at the time you actually bring that product to market.

Your architect and more so the drawings will help you establish the amount of times required for what you are doing.

I should have mentioned that I will be using an architect who has experience getting ADU permits.

What you need to do is get an architect in there to determine what needs to be done.

3.I’m currently in talks with a few architects who have dealt with the local historical commission but they are both severely back logged and won’t be available for several more months to discuss more in depth.

I am an architect in Toronto Ontario.

We use Chief Architect, but we also have 2 employees who run chief like total bosses.