Interesting solution if the house you buy happens to have a solid style staircase and the tear-down and addition of a full-on wrought-iron design would be cost prohibitive. Not that this looks inexpensive, mind you.but it could serve as an alternative.
Teds Wood Working - How to make a vertical house number sign for your home exterior, easily mountable right by a front door. Includes a little planter to add some pretty color. Get A Lifetime Of Project Ideas & Inspiration!