@Aristotle Kumpis  There is no reson you can't combine buying Infill lot with Build to Rent.

Let's say ARV is $300k, and sale costs are combined 8% so $276k net sale, that puts you at 80% of the total cost, it gives you a ton of margin for errors and mistakes that I would almost promise you will happen in a project like this. 

A former Rite Aid in Alpharetta, Georgia, has been transformed into Off Leash, a combination dog park and restaurant.

You'll be able to take out half of your vested balance though, so not a ton.If you liquidate it, you're going to have to pay 10% (assuming you're under 50 years old) + taxes owed if it's pre-tax.So maybe a combination of the two using a HELOC on the equity.Is the 401k in the Roth portion by any chance?

It's exceptionally rare for rent to not be paid, especially to the point of having to file an eviction. 

The combination of lower debt costs and rising cap rates is reinvigorating investor interest, particularly in prime urban locations.

I mostly use MLS and local reports, but a tool that combines rental data, bylaws, and prediction models would be super helpful.

In terms of your next property, while no-money-down deals are possible, they're rare, so focusing on building up some cash reserves will help.

Now years later, I rarely, if ever, buy real estate from the MLS because of those connections I made.  

I did STR in a duplex starting back in 2017 and managed for others in North Conway, Ive since converted to all long term tenants and happy i did so... unless your property has something unique or a "rare" amenity.... like, sleeps 30, I honestly would not waste any energy on it in the north Conway area. so saturated, and so much big money being invested in the hotels, its tough to match amenities vs cost, and I see travelers trending back towards the hotel style accommodations. granted, for the right price, I'd buy anything and figure out what the best use for it is. use airdna.co for decent data on # of Short term rentals in any particular market. can also identify opportunities. the point of my response.... be careful in STR in any area and always have a plan B. you can change a lot of things about a property, but your cant change your basis!