Quote from @Devin James: We're actively looking at new building plans for future buildsHere some things we're considering while balancing design, cost, and functionality.1) Cost to build – Simple rooflines, efficient use of space, and minimal wasted square footage.2) Functionality – Does the layout actually make sense for how people live?

I would second the simple spreadsheet.

Quote from @Loren Souers: A simple spreadsheet would suffice.

When I used to be a Realtor, I ran comps manually using a simple spreadsheet I built. 

I spoke to another guy at a conference who used to build 1-3 units before doing commercial and he said he wishes he still did the single family because it generates a lot of cash and is pretty simple. 

Something basic and simple, shows a property, the numbers, the potential return, how to cash out investors, how to document taxable spending etc.  

Personally, I would start simple with a single family. 

Speaking from hands on experience on both platforms as I've worked with both Carrot and Wordpress sites (more than 400 sites so far since 2017), what carrot brings into the table is their simple, all in one, fast website platform.

It's really simple to use and to test various scenarios. 

These are not simple challenges to overcome.