Andy Pike Angela,
The codes for baluster spacing are different from state to state. In California, the code spacing on a stair is 4 3/8" maximum between and 4" on a balcony or landing. In some cases you can use only 2 balusters per tread depending on width of the baluster and the run of your stairs. Keep in mind that even if the bottom of a baluster is 2" wide, if the top is tapered, the measurement between will be take there. While I did not work on the project pictured above, based on my experience, it looks like the spacing is at least at the 4 3/8" spacing or might be more. Not all photos you see on Houzz comply with every code from every jurisdiction.

dawngrande Can u give me the stain brand that u used for the nearly black stain? Thanks

amoora Minwax Stain Mulitple Coats

Summit Stairs & Millwork I design custom newels and stair parts for our company and other stair companies. I have received pictures from customers and replicated the design as close as possible from it. Those are actually close to the same style I have designed for another local stair company. I use AutoCAD to do the design and have trusted craftsmen that can turn them on their lathes. Feel free to contact us through our contact info here on Houzz. Good luck on your project!

Turnings Unlimited In the process of custom making 2 starter newels as pictured and 6 for landings as well as 6 half posts. Be glad to do more! 937-588-4050 or www.turningsunlimited.com

kbanewhouse Interesting. Thank you so much. I had heard just one negative comment from a bamboo owner, but I really don't know too many who have it. And, I hear you on the ease of maintenance. In the back of my mind with these black stairs, I just see dust bunnies! I appreciate the advice.

Kosta's Inc. What color are the stairs and floors?

oconja Ditto Lisa's question