We plan to replace with tankless water heaters and in-unit high-velocity small duct central heat and air (using electric baseboard for the garden unit heat), and also remove all the radiators from the building.

The reason we're thinking about Apartment is the hope of gaining some velocity.

Plan to transfer this equity into other projects and keep the velocity of money moving.

We were only able to start doing these after we put together a system, a team, and gained experience and credibility over a couple of years.your describing the BRRR method which is anything but  NO money down.. as one moves into this business it does become possible to do deals with none of your own money.. happens every day.. but in the context of folks on BP that are generally speaking starting their journey.. they have neither the experience or knowledge how to do that.When you get some velocity behind you then yes many business's in the real estate space the sponsor or owner of the company leading the charge may have NONE of their own money in the deals.. 

Plus...escape velocity...Episode 113 – Jay Papasan - Very practical slow and steady adviceEpisode 221 - Tim Shiner - his concept of equity build up and "shearing the sheep" shows some of the flexibility of real estate vs a 401k Last but not least, I also recommend all the tax advice given by my fellow CPAs on the BP Podcast.

Less problems and more money for velocity with little to no risk is the name of the game.I do not have any agents these days by choice.

I am very interested to hear how you went from zero to escape velocity.

Sale velocity has slowed in the San Diego market.

Ideally, if you're flipping, you want to be in a subdivision with "sales velocity" (movement of homes).

Velocity of money is definitely LOW.