The property has a pretty low interest rate with a 15 year land loan.

Any one else seeing this and have you found any other option for affordable rates?

While I am currently looking for multi-family duplex/triplex with an eye to use BRRRRR in the north shore area (north of Boston suburbs like Chelsea, Revere, Saugus, Swampscott, etc) class B/C properties, I am wondering whether this strategy in a "tenant-super friendly" state like Massachusetts's with current high interest rates (and therefore high construction/materials/contractor costs) is worthwhile at this time.

For instance, I have a property that started as a HH; when rates increased, re-fi’ing wasn’t an option, but the property had a layout and zoning that was conducive to adding an ADU—which I did, greatly improving the property’s cashflow.

However, I think that Kearny / Harrison will see more sustained and consistent rental rate growth.

Nightly rates, occupancy etc?

.: I would highly suggest buying an existing community, it is almost always easier and more profitable unless you know what you're doing. logan the issue on the West coast is parks are treated like investment grade props and sell at a very low cap rate even in this interest rate environment. 

Anyone in St Pete/Largo bought a  2 BR 1 BA house and added bathroom a bedroom and pool and forced appreciation to get good rates in STR or LTR?

To earn passive income through short-term rentals, investors should ensure their rental rates are competitive, provide excellent customer service, and maintain a well-appointed and well-maintained property.6.Flipping HousesFlipping houses involves buying a property, fixing it up, and selling it for a profit.

Purchasing your primary with this money, unless it produces income, will likely cost more at the higher interest rates of today vs what you have as a rate on this property.