It's an incredibly popular change, so I'd be surprised if we don't see it again.As to the retroactive point, it's not happening.

I've seen lines of credit on WSJ Prime, Prime, COFI index, Treasure maturity indexes, Libor, and many others.A popular 1st lien HELOC primary is a primary and secondary residence product (non investment properties) and it can go up to 75-80% LTV which doesnt sound too high, but the max loan amount is 2,000,000 vs typical HELOC (home equity lines of credit) that cap out at 350-500k.

Investment Info:
Single-family residence fix & flip investment.

Purchase price: $163,400

Cash invested: $25,000

Sale price: $240,000

A buy&flip project on a Single Family House
10K - ...

Some locations may have "pockets" of high density student housing that proves to be more popular than a house across from one section of campus.

Deadbolt, camera, thermostat, sheets, towels, rock and roll. 

I went all in on this strategy, buying and living in what I thought was the best of my D class properties, following the popular "house hacking" strategy often talked about on BP and other places (terrible idea). 

Congratulations on your inaugural post – it's like your first step on the moon, but with less risk of tripping over a rock and more about not tripping over real estate regulations.

I'm not in that area so I don't any particular Facebook groups but you should be able to find the most popular just by looking around on FB. 

The area has seen significant growth, making it a popular choice for rental properties.Fishers: Located northeast of the city, Fishers boasts a strong economy and a growing population.

Annual Rentals - Rock!