Specializing in custom staircases and architectural millwork since 1984, SDstair Coast Building in Santee holds CSLB license #475720 with C-6 Cabinet, Millwork and Finish Carpentry and C-15 Flooring classifications. The shop on Magnolia Avenue fabricates hand-turned newel posts, wainscot paneling, crown moulding, and hardwood treads that integrate with entry and interior door installations coordinated alongside Great American Door & Screen on Prospect Avenue. Staircase styles range from traditional all-wood balustrade systems to contemporary cable-rail and iron-baluster designsâthe latter featured in Coast Living Magazine's 2014 House of the Year. Hardwood flooring installation under the C-15 classification ties stair treads visually to the surrounding floor plane, ensuring grain direction and stain color match across landings and hallways. Mechanical coordination with HVAC contractors such as Schoonmaker Heating & Air Conditioning on Prospect Avenue prevents duct conflicts behind stair soffits during multi-trade renovations. The most complex commissions involve curved-stringer staircases with laminated LVL carriages bent to radius specifications exceeding 12 feet.