I'm a Project Manager at an Architectural Firm specializing in Custom High-End Homes.  I started my Real Estate Investment Journey in 2016, have flipped four homes since then, and own one rental.  I am looking to get ...

Assuming you have an architect, my guess is that they will lean towards using the AIA docs.

Instead of platforms like Angi, try building relationships directly with contractors, architects, and developers.

@Christopher J Driscoll did offer some great insight from his experience with ADU's as an architect and property owner.

While the cost can vary depending on the scope, zoning, and materials, I’ve seen similar projects run anywhere from $50,000 to $150,000, depending on factors like plumbing, electrical upgrades, and structural work.If you’d like, I can connect you with a few contractors or architects in Chicago who specialize in basement conversions.

We have learned so much, the main thing is that your architect matters a ton.

Do I get with any architects or designer on the best way of fixing up the home?

Plus, if you'd like to connect and talk marketing/sales happy to do coffee or something.Also, there are tons of Facebook groups for Chicago real estate.Lastly, just doing some 1:1 networking with lenders, agents, and architects is something we focus heavily on.

Ask around for architects who have build nearby, they know rooftops to dirt finishes.

All three units are long term rentals.Reach out if you need a good architect or contractor for your projects (anywhere in SoCal or NorCal).