San Diego Custom Iron Works designs, fabricates, and installs custom exterior spiral stairs and circular metal staircases for ocean-view decks, residential homes, apartment complexes, and commercial properties across San Diego County. From heavy-wall structural steel center columns and cold-rolled helical stringers to complete shop-welded assemblies lifted into place, every stair is custom-measured and crafted by father-and-son fabricators Luis Lazalde Sr. and Luis Lazalde Jr. — combining 30 years of master craftsmanship with generational continuity. Explore our complete custom fabrication capabilities as a licensed C-23 San Diego stair contractor.
Off-the-shelf spiral stair kits shipped in cardboard boxes rely on plastic collars, stacked sleeve spacers, and set screws that can flex, rattle, and trap water in open joints. We build heavy structural steel spiral staircases shop-welded in El Cajon for rigid, whisper-quiet, long-term structural stability when properly maintained.
Maximize outdoor living area without sacrificing deck footprint. Exterior metal spiral stairs provide elegant, compact vertical access from ground-level patios to second-story view decks, rooftop terraces, and elevated balconies in coastal communities like La Jolla, Del Mar, and Coronado.
Adding efficient secondary egress or private tenant access to multi-unit apartment complexes, commercial lofts, and outdoor restaurant dining platforms. Designed to meet California Building Code (IBC 1011.10) spiral stair dimensional clearances for approved secondary access paths (such as private decks, small mezzanines ≤250 sq ft, or restricted service access serving 5 or fewer occupants).
Bending structural steel channel and pipe into uniform spiral and circular geometries requires specialized equipment, deep metallurgical experience, and physical layout templating.
At San Diego Custom Iron Works, all helical rolling is performed in-house in our El Cajon facility using heavy hydraulic section benders:
Center-Column Spiral Stairs: Feature uniform treads radiating 360° around a single structural steel center pipe column within a compact 5-foot footprint.
Custom Circular & Curved Stairs: Feature open-center double rolled helical stringers without a center pipe column, sweeping gracefully across a wider radius for custom architectural entryways.
Exterior spiral stairs installed near San Diego's oceanfront face continuous salt spray, high humidity, and intense sun exposure. Unprotected steel quickly rusts from the inside out, particularly around hidden collar joints and mounting base plates.
Spiral staircases are permitted as a secondary means of egress when engineered to precise dimensional code rules.
| Compliance Metric | IRC R311.7.10 (Residential Dwelling Code) | IBC 1011.10 (Commercial Secondary Egress Code) |
|---|---|---|
| Minimum Clear Width | 26 inches (660 mm) clear below handrail | 26 inches (660 mm) clear below handrail |
| Minimum Tread Depth | 7.5 inches (190 mm) min at 12" walkline | 7.5 inches (190 mm) min at 12" walkline |
| Maximum Riser Height | 9.5 inches (241 mm) maximum | 9.5 inches (241 mm) maximum |
| Headroom Clearance | 6'-6" (78 inches / 1981 mm) continuous | 6'-6" (78 inches / 1981 mm) continuous |
| Baluster Infill Rule | Max 4-inch sphere restriction | Max 4-inch sphere restriction |
A standard straight stair flight requiring a 12-foot rise consumes over 14 feet of horizontal floor length. A code-compliant 5-foot diameter spiral stair consumes only a 5'-0" x 5'-0" square footprint on the ground — conserving over 70% of outdoor patio and garden space while providing safe vertical access. Note: Under California Building Code (IBC 1011.10 & IRC R311.7.10), spiral staircases serve as secondary access paths for private residential decks, small mezzanines (≤250 sq ft), or restricted service platforms (serving 5 or fewer occupants). Primary commercial egress corridors require dedicated straight or landered stair flights.
Getting a custom-fabricated metal spiral staircase into position should be completely stress-free for the property owner. We handle every step of transportation, site protection, and placement with white-glove care.
We solve site access challenges with turnkey white-glove logistics:
Read how Luis Lazalde Sr., Luis Jr., and our certified crew deliver meticulous iron craftsmanship, prompt communication, and dependable service across San Diego County.
Clear expert answers regarding spiral stair engineering, code clearances, logistics, and cost factors.
Lightweight bolt-together kit stairs rely on adjustable sleeve collars, set screws, and plastic component covers that can flex, rattle, collect water in joint seams, and rust in coastal salt air. San Diego Custom Iron Works fabricates shop-welded single-unit spiral stairs with heavy structural steel center columns, continuous cold-rolled handrails, and seam-welded tread brackets engineered for long-term structural stability when properly maintained.
We build complete spiral assemblies in our El Cajon shop, load the finished unit onto a dedicated flatbed trailer, and transport it directly to your property. We coordinate professional crane hoist services to lift the stair cleanly over roofs, trees, or tight property lines, anchoring the unit directly onto pre-poured footings or deck brackets efficiently once site prep, footings, and crane logistics are aligned.
Yes, within defined code application limits. Exterior spiral staircases are permitted under IRC R311.7.10 and IBC 1011.10 for secondary egress (such as private residential decks, small mezzanines under 250 sq ft, or service access serving 5 or fewer occupants) when built to specific code dimensions: minimum 26 inches of clear walking width below handrails, a minimum 7.5-inch tread depth at 12 inches from the narrow edge, maximum 9.5-inch riser height, and continuous 6'-6" (78 inches) headroom clearance.
For coastal installations in La Jolla, Del Mar, Coronado, or Pacific Beach, we specify ASTM A123 hot-dip galvanizing, fully submerging the raw steel assembly in molten zinc. We can follow galvanizing with Super Durable AAMA 2604 architectural powder coating in custom colors, using Type 316 marine-grade stainless hardware for mounting.
Luis Lazalde Sr. or Luis Jr. visits your property to take precision laser measurements of floor-to-floor rise, landing clearances, and obstruction radius. For complex custom circular or curved runs, we build full-scale physical floor templates before shop bending begins to ensure precise alignment with site conditions.
Providing turnkey design, shop fabrication, and crane installation across all San Diego communities:
Luis Lazalde Sr. started working in his father’s metal shop at 13, continuing a documented lineage through generations of “Herrera” — the Spanish trade designation for metalworker. Today, working alongside his son Luis Lazalde Jr., the family brings dual quality control, certified structural welding, and generational continuity to every project. We visit your property across San Diego County for precise laser measuring, code clearance verification, and accurate written estimates within 24–48 hours.
