2021

At the time of writing (May 2019) I wanted to see how possible a human moon landing could be made.

The key in my view would be what hardware is currently available or near completion.

We have access to LEO

Currently available

Falcon Heavy as launch

Soyuz

Working on that completion need accelerating

Bigelow Habitat

Starliner and Crew Dragon

Russian station modules such as solar power

NEEDED FAST ACCELERATION of development.

Crew Dragon repulsive landing for the moon

LEO Refueling tanker

I propose building in LEO a Luna transfer vehicle with a Bigelow Habitat module, russian Power module, two Crew Dragons with Luna landing capability, the biggest issue in my view would be to be able to fuel in LEO.