One thing I’ve always done is focus on the 75th percentile of the rent estimates, as my properties tend to fall into that range (very nice, but small with no amenities).While I think there will always be some manual research involved, the current platforms lack key functionality that could be easily implemented with the available market data and technology.1.Quality Metrics:•Filter comps to match the quality of your rentals.

Just like any aspect of real estate investing, non-consumer lending at a large scale is a relationship business. 

Many real estate agents dabble in property management without fully understanding the complexities involved, making it risky to work with them.

There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there. 

Specifically, I am interested in learning more about syndications, working with lenders, lawyers, CPAs, and other professionals involved in cross-border real estate deals.

I personally have no connections with anyone who is involved in this niche and I'm wondering how other people have started their journey.

The truth is if your investors have no involvement in the operations, If they just put in money and expect to get a profit, you have created a de facto syndication.2) I see a ton of people who just raise money for the syndication. 

Every youtube video I find when searching this problem involves someone replacing or moving an electric box that either hasn't been wired yet or is re-wired.

I happen to be looking for gap funders myself for a number of my house flip projects in Houston, TX and finding gap funders or any kind of private money involves a lot of networking and putting myself out there to meet potential lenders.

I'm not a lawyer, but I've consumed about 1000 hours about Wholesaling both commercial & residential, and none of what they do requires a license.