For example if you have a website which needs to talk to some other piece of software or database, it is usually done via the API.

That enables you to buy around 760k with just 3.5% down payment.

@Jason M Pagan I'll add a bit of commentary to @Evan Bell's response.Towns/Cities in MA typically have assessor's databases on their website.

At this point though I am looking more for an online database of property info.

I will add my coach also ensures that they have an investor call after a few weeks of capital raising that helps re-assure verbal commits and interests prospective investors, enabling them to ask questions as well.  

I teach Agents to grow their business using their laptop, social media, their database, and their SOI (sphere of influence).

Nick Patterson Thanks again, but I don't have access to the MLS database.

In general, I'd like to think that most PMs try to be good, they just don't always have the tools that enable them to deliver a high level of service in a reasonable about of time at an affordable price.

As sponsors scale, their investor database gets more sophisticated, including institutional capital sources who have the sponsors over the barrel; so, I don't see it here.I do see mis-aligned deal structures below scale all the time though, many with family and friends as investors. 

And, you'll find that some will be burned out and will be interested in hearing what you have to offer.You might also want to consider looking into the 311 database, specifically the complaints reflecting homes with trashed yards, junk vehicles and other nuisances.