I am a full-time Landscape Architect and been learning about real estate investing this year in hopes to start getting into on the side.

This doesn't even take into account the wait time if you need an architect to produce plans.  

Similar to how you have residential/commercial architect or contractor.

How Long Does it Take to Become an Architect?

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.