Open riser stairs cost $11,000-$18,000 installed in Ontario vs $8,000-$11,000 for closed riser. OBC 100mm sphere rule, 250mm minimum run for open riser, permit requirements, and a clear comparison table.
Custom staircase cost Barrie Ontario 2026: traditional $8,500-$11,000, open riser $11,000-$18,000, floating mono-stringer $15,000-$24,000. City of Barrie permit timeline and what is included in a C.O.R.S quote.
Custom staircases Ontario cost $8,000-$26,000 installed (2026). Traditional $8K, open riser $11-16K, floating mono-stringer $14-26K. OBC specs, what drives cost up, and why workshop dry-fit matters.