If you do not yet know the meaning of the expression, it comes to us from America and means "Maison en scène"  to designate what is literally a "staging of housing" intended to sell it quickly and at the best possible price. Do not confuse home staging with interior decoration, and even less assimilate it to a renovation of the property intended for sale. It is simply a matter of drawing the attention of the potential buyer to his strengths. The whole, with the means of which the home stagers agree that they should not exceed 1 or 4% of the value of the property.