This can make it difficult for you to assess problems in the future.Also, when you buy property that have been converted, likely the layouts are very funky.

Couple of questions & assumptions that I'd really appreciate some critiquing/input on:Building Layout:- Right now I'm assuming 1 acre (43,560ft) will yield about 60% (+/- 26,190ft) of climate control NRSF. - What is a good rule of thumb yield/acre, and how many sq ft of slab/building should i assume for every 1 ft of climate control NRSF?

Sit down with them and lay out your thought process. 

I'll sketch out the (current) terms first and then lay out my concerns/questions:Proposed Terms/Assumptions:- I contribute my land to the project receiving accrued interest at end of project (at rate similar to hard money rate).

I am really wondering if someone can layout how to jump into it and go about completing the BRRRR method.

I use Chief Architect to do layouts/constructions drawings and can handle any permits needing pulled.I have capital that I’m willing to invest.

Our portfolio in Illinois (close to Chicago):All properties in this portfolio are the exact same layout in terms of sq ft and having 2 bedroom and 1 bathroom and are Condos in a 4 unit building Only difference is when each unit was renovated or not.

That is a better way to start than pumping numbers from Zillow into a spreadsheet before you know what to look for in a basement or layout.

If you would like real numbers  on what you can potentially borrow lay out what you currently owe and what you think the duplex is worth?

You have your standard two-family layout.