Anyone’s credit can be improved given a bit of time and resources. 

I have found that when you do your own work efficiently and/or your own contracting, the money you save from being attentive, knowing the true costs, and being ready to do what needs to be done yourself, if need be(or because you enjoy the type of work) is easily enough to cover improved materials.

Prior to the military, I did concrete work, drove a truck (I got my CDL when I was 16), and operated heavy equipment.

If they are interested, talk to them about improving their credit. 

The interest is higher yes, but the value comes in when we are looking at 6 month loan seasoning to get the property improved and restablized for a value increase refinance. 

The owners had massive equity in the property - and improvement/necessary maintenance negligence in the 5 years they owned it.

There has been no sign of an improvement in new listing flows in the last several weeks of 2019.

Especially because large sites like that have access to work trucks. 

Were you advising to use the "home improvement" contract at rocket lawyer?

It's all about debt-to-income ratio and credit score, so do everything you can to improve those.