Hey @Austin Berlick I understand the frustration with no multifamily inventory there to buy. The inventory in my market is practically non existant. I'm glad that didn't stop you with the househacking strategy and you're making it work! Based on your information, I have a few comments/questions:
1. Is it possible to find something less expensive slightly farther away from downtown? I have lots of clients that assume that the only way to find roommates is to be close to center city, but it's not. People live in different locations for all types of reasons, so don't let that deter you. If there's an area that has a lot of jobs a little farther out, more affordable areas, check those out.
2. Let's go back to basics. The point of househacking is to reduce your living expenses so that you can save your W2 income at a higher rate, which then allows you to purchase another home in a shorter amount of time. It sounds like this fits the bill, with saving at least $400/month in rent/mortgage, while also having tenants paying down your loan and building appreciation. Househacking gets you started, and in a market that is as hot/competitive/expensive as Austin, that's awesome that you found an opportunity.
3. Could you rent the rooms out at furnished? Either a mid term rental (30-90 day stays) or STR? A mid term rental gives you a happy medium between the higher cash flow of an STR and less vacancy of the LTR. You would, of course, need to furnish the room with furniture and linens, but that initial up front cost may be worth it for the increased cash flow? Check out FurnishedFinder.com and Airbnb (room only, not the whole home option) to see what people are charging for a room in that area. Account for higher vacancy when running your numbers than a typical LTR and see what you come up with.
4. Any rental restrictions in that new construction neighborhood? Your realtor should hopefully have already found that out for you if they know what you're planning your purchase for. Perhaps after you move out, you could change it to an Airbnb or a midterm rental which would increase the cash flow.
5. No one knows what will happen in a year or two years when you have the cash saved up to buy another home. Rents may have gone up by then.
6. If you're going to be saving (average) of $600/month in "rent", that's a savings of $7200 in a year or $14,400 in two years. Let's say worst case scenario rents don't go up, and the price of your home doesn't appreciate or it goes down. You still have a cheaper place to live than if you were renting, you're essentially saving over $7k a year, PLUS you're building a real estate asset that over the LONG TERM will pay you back. OR you pay a guaranteed $21,600/year to live in a rental and pay someone else's mortgage and get none of that back ever.
7. A new construction home should have very minimal things that you would need to pay out of pocket for maintenance on in the first few years. The roof and HVAC, which are the two big ticket items for homes in my market, are brand new and should last more than a decade. Perhaps this outweighs a slightly cheaper home that will need a new roof in a few years.
When you look at it like that, it's a no brainer for me. That said, it all comes down to your risk tolerance. Let us know what you decide!