If you ever have to evict or take other action, you'll be very happy you used time tested materials designed specifically for your jurisdiction.Should also give you access to Fair Housing training. 

What are the features of the higher end rented places vs. lower end?  

Might be tomorrow might be in 50 years but eventually it will break up and be more of a liability then a feature.

There are several free options for landlords to collect rent plus additional features, let me know if you need a recommendation.

You're a wholesaler not a website designer or SEO tech.

I have started to build the feature set assuming the owner already acquired their plot and permit.

The problem I have had is that they do not come in the decora square style design, only in the round design, which I like less.That's definitely the easiest solution though!

Also the title company in Texas they designated charged me about double what I normally pay for escrow fee and gave much worse service than what I expect from my normal title companies.  

That is why it is a standard feature of many Renter's Insurance policies to pay for alternate living arrangements should these be needed.

I use rentometer.com which I think is fairly good, but requires you to pay a fee after a few free searches.I would LOVE to see BP include a rent estimator feature with their PRO subscription.