Your suggestion to list on open market likely is the best option for the OP.  

In a prior post from about 2 months ago, Kerry Malarkey and Nathan Gesner mentioned a small landlord is exempt from FHA requirements requiring the acceptance of emotional support & assistance animals if one of the...

For example, if you have $130K in equity, you might get $100K-$110K available in a HELOC.Look for a fixed-rate option for the HELOC to avoid rising rates.

But I would suggest exploring all options to make sure you are getting the best rate and terms.

I'm also considering Halethorpe because it's a good commuter location.Some people really like supporting the city in which case , northeast Baltimore would seem to the best place to buy a single family, in my opinion given the taxes situation and given that none of those areas are walkable I’d rather just be in the county and pay Lower taxes, and it’s not like northeast Baltimore is much that much cheaper than Baltimore county, hathorpe is mixed, arbutus is nice, I hate the housing stock there, would rather be in Catonsville if I was considering western Baltimore county. 

The other option is to find a partner with some experience and use that on the loan.

We have three potential options.The first option is for me to completely owner-finance his purchase.

My agent is saying that we are unable to split the contract that way (or reduce the purchase price), so I'm trying to figure out options.

The best option would likely be a construction loan, which can cover both the purchase of the land and the build.

This lowered my cost basis per lot by 7k.