These were each new construction homes in the $300K range in growing markets (I'm using general numbers for illustration purposes).

Doing a refi now would move me from a 4.5% interest rate to somewhere in the high 7% to 8% range, so I am thinking of potentially selling.

So you can educate yourself to the specific neighborhood and home in the price range you are looking for.

I am writing my business plan and I am trying to figure out how I will include in the renovation costs from a percentage of the purchase priceThis is really not possible, except in a very broad range.

People are always looking for units in the 500 to 550 range, so you're right on track with that.  

The partner is only bound to their initial investment but can loan more money to the partnership if they want to accelerate. 

Diverse Economy**: Mobile's economy thrives on a diverse range of industries, including aerospace, maritime, healthcare, manufacturing, and tourism.

Can you cash flow with a rate in the 9-10 range?

There are options for 80% LTV on a cash out in PA - expect a rate in the 9-9.5+% range depending on FICO and level of experience.

Let's break down some factors that might impact your cash flow projections:Finding a duplex in the $300k–$400k range might be difficult in NYC due to the city's comparatively high property costs, especially in upscale districts.