You have the plans (or not!) for a building but the investors need to see it before they sign the cheque...
OR you have the dibs on a property but don't want to invest in it or the buildings until you have a definite buyer,
OR you want to enthuse a landlord to let you set up a shop on his spot...

Some artistic flare is required to visualise what the place might look like once you've finished the job and the money's in your pocket.
Artistic flare is something we have in surplus.