Vintage or retro style refers to designing style popular in old days in any domain such as music, apparel as well as architecture. Vintage or retro style is still so popular even now. In architecture, retro style means an exclusive designing style applied to any building whether comletely or partially.
As for a retro style kitchen renovation, it means renovating all furnitures and the kitchen structure the way it looks similar to ones back in previous years. A retro style kitchen renovation project may give your kitchen a gorgeous look in addition to a superior funtionality.
Photo via: retrorenovation.com