Idle money is the quickest path to low returns and does no good for anyone.

With a Conventional Loan you can buy a SFH, Duplex, Triplex or Quadplex with as little as 5% Down if it is your primary residence as long as you have the intention of occupying one of the units for 1 year after closing escrow.This is the strategy I have personally implemented and have assisted many of my investor clients in doing the same. 20% Down is also beneficial as it keeps your payment low but it does limit your ability of buying more real estate faster.i would be more than happy to discuss the different strategies with you over the phone or in person.

Tax-wise, profits are taxed at your ordinary income rate, and frequent flips may subject you to self-employment tax if classified as a dealer by the IRS.

Mortgage rates and PMLs are 8-12% plus points right now so the deal has to be a low enough entry. 

Also the hit rate per property is really low.

Be mindful of short-term capital gains tax, as profits from flips held for less than a year are taxed as ordinary income, and frequent flipping may result in self-employment taxes.While profits from flips do not qualify for 1031 exchanges (since flips are considered inventory, not investment properties), you can minimize your tax burden by deducting allowable expenses like renovation costs, loan interest, and holding expenses.If you're considering diversifying into rentals, explore opportunities to benefit from long-term tax advantages such as depreciation and lower long-term capital gains rates.

Personally I like keeping my properties that I know are successful and have low maintenance.

Just food for thought here, all the hype around subto lately got me thinking, it's not even a strategy I typically employ but like to have in my back pocket in the rare case when it makes sense. 

The type of the neighborhoods where his properties were located didn't fit in with my plan but he did well and the purchase costs were low.

The negative equity often exceeds $50k but even if I use $25k (it would be rare to have this low of an initial negative equity position), is nearly 2.5 years to recover.