If you are using only decorative artwork, budget between $1.00 and $2.00 a square foot for usable space. This means you would eliminate areas which will not use art, like distribution warehouses, loading docks, closets, etc. If you have lots of open areas with cubicles, you will use less because you have less wall space; if you have many enclosed offices and conference rooms, you may use more.
Another guideline is you will need to plan for a picture on every 8 running feet of wall in hallways (uninterrupted by doors or other openings.)
Our design department can look at your floor plans, take your art specifications (type of frame, type of glass, number of mats and hanging requirements) and give you a ballpark figure to put into your budget upfront to accommodate artwork.
If you want fine as well as decorative artwork, please indicate this and we will budget accordingly.