My realtor (and friend) owns a number of properties and recently offered to sell one to me through a lease purchase agreement.

On the other hand, a multifamily property might offer steadier income and can be a bit more hands-off, especially if you opt for property management. 

FHA is good for low income, lower credit and offers higher DTI ratios to accommodate.

Although I haven't gotten a yes yet, the sellers weren't upset with my offer.

How do I go about contacting someone to see the house and possibly make an offer?

I am always offering up properties to my investor group that are "almost" multi.

In Colorado Springs, I work with lenders that will offer a 0% loan on almost all of the down payment.

That, and lots of refi-only loan officers don't know what they are doing, but have been forced to offer purchase mortgages because no one is refinancing, so they just regurgitate FHA rules as if they were applicable to conventional, because they do not know any better. 

You'd still, however, need a separate skiptracing platform because I am not sure attomdata offers this service.

In Washington state right off the I 5 corridor .. my land partner got into contract for 65k ( infill lot that could handle a duplex or two units) put it on the MLS ( which is how you get top dollar) sold in 3 days multiple offers for 110k netted us 100k so 35k net profit .. which I have a formula to split with the acquisition partner. ( PS its always more to them than me) but bottom line if you can fill your pipeline its easily a low 6 figure to mid to high 6 figure when you have a capital partner like myself.. or someone else.. does take a fair amount of capital though usually 500k to 1 mil in cash to make that kind of money so thats where we come in.