My three main things are being easily able to integrate my team with the software, robust owners portal for my hosts, and utilize AI for dynamic auto messaging. 

Estimating construction and remodeling has been around a long time, people who do this are called estimators.There's books, software and even courses on estimating.

I listed my property months ago and get no bites the minute I suggest they fill out an application considering it would be a 30+ day contract?

Also are there any apps or software recommended for self-managing?

I can help a lot I do this in Columbus Ohio and Miami Florida but as a service for now not purchasing them. if you are going to do larger deals look for the largest gap in entitlements, density, and asset value as a land driver. for example we found a piece of land in Columbus Ohio that was 55k and we just got an appraisal for 1 million based on the rezoning application that we did for mixed use commercial.

Also, request the tenant info provided in the application process so you can see the type of tenant who was approved.

I have a rental applicant who has tax ID but no SSN.

Now they are screwed - every time they fill out an application, for their next rental, to buy anything on credit (like a car) or buying a house...this Judgement will pop up and they will be denied.

The good news is that I've talked to a few software developers that are trying to develop market analysis tools for MTRs.

Buildium our property management software does not provide credit bureau reporting as service, despite request over many month from many of it's users.