Tough to beat this answer from @Michael PlaksYou can also check out these two recent posts that walk through Section 121 Exclusion and 1031 Exchange guidelines and strategyHow Section 121 Exclusion and 1031 Exchange works: https://www.biggerpockets.com/forums/51/topics/1195208-1031-and-sec-121-experts-want-to-sell-rental-but-tax-worried What not to do if you don't meet the requirements for Section 121 Exclusion and 1031 Exchange:  https://www.biggerpockets.com/forums/51/topics/1195383-5k-for-cap-gains-tax-opinion-quote-that-reasonable ...

I like Columbus for moderate cash flow and high appreciation and Cleveland for high cash flow

Went through 2 iterations of our plan with an architect only to discover it cost too much to build.Earlier this year we looked into a container home only to be shot down by the zoning commission.Construction costs have come down since last year so now we're looking at a very small stick-built cabin.  

Are you cash flow positive on the rental at the moment with that rate? 

The only adjustments I made were adding a couple additional rows of data at the very bottom of each page to track what I paid in principal each month, and what my net cash flow after that was.

If you're looking for STRs on the beach, you'll have difficulty finding something that cash flows unless you can get optimal occupancy. 

@Eric Inigo did you end up going through with a deal with them?

As a seasoned real estate agent with five years of experience under my belt, I've had the privilege of guiding numerous clients through their own investment journeys.

I have found time is better spent building tools to quickly analyze & procure new deals, rather than hyper-analyzing the metrics of one deal, ultimately making initial review faster & more reliable (spend time on the things that make sense, quickly remove things that don't, even junior-level staff can identify good opportunities with the tools, etc).For example, if I'm modeling a SFR to 3-4 unit scheme, I can quickly check the $/sf/mo for each of my proposed units and get a good idea of the GOI without having to manually dig through &  find rent comps in that City/Zip:- So instantly I know in Woodland Hills that a Studio is close to $5/sf/mo on avg, 1 Bedroom closer to $4/sf/mo, with the 2 & 3 Bedrooms closer to $3/sf/mo.

However, I'm looking for a website that does a NOI, cash flow analysis SIDE by SIDE comparison.