Define the project type and condition

Start by naming what you are buying: a complete stair and railing, a new stair with railing decided later, railing for an existing stair, a level guard, a spiral kit, or an exterior stair. Then note whether it is new construction (framed or not) or a retrofit. Retrofits add demolition, framing changes, finish protection, and repair; new construction lets you coordinate openings and blocking before drywall.

Floor-to-floor, opening, footprint, width, headroom, and landings

Section showing floor-to-floor height, floor opening length, headroom, and available plan lengthA stair rises from the lower finished floor to the upper finished floor. Floor-to-floor height is measured from finished floor to finished floor. The opening length is measured along the upper floor where the stair passes through. Headroom is measured vertically from the line of the tread nosings to the underside of the floor or ceiling above. Available plan length runs along the lower floor.HeadroomFloor to floor(finished floors)Floor opening lengthAvailable plan length
Key measurements for a new stair.
  • Floor-to-floor height from finished floor to finished floor. It sets the riser count and stair length.
  • Opening dimensions of the upper floor where the stair passes through. They govern headroom.
  • Available footprint — plan length and width — which decides whether straight, L-shaped, or U-shaped layouts are realistic.
  • Stair width, which affects comfort, treads, structure, and cost.
  • Headroom along the whole path, not just at the opening.
  • Landings at the top, bottom, and any turns.

Approximate numbers are fine for budgeting. A manufacturer or installer must field-verify every dimension before fabrication. One manufacturer’s stair measurement guide (Keuka Studios) shows the kind of detail suppliers ask for.

Open sides, level guards, and handrails

Elevation showing a stair guard, a level guard, and a separate handrailA stair rises from left to right. Along its open side a stair guard with vertical infill follows the slope. At the upper floor a level guard protects the open edge. A separate graspable handrail runs on brackets just inside the stair guard.Stair guardHandrail (graspable)Level guardUpper floor or overlook

Mark every open side of the stair and every open floor edge: top landing, intermediate landings, overlooks, balconies, and catwalks. Decide where a graspable handrail is needed, including wall sides. A guard top rail may not serve as the handrail; plan for both where needed.

Substrate, blocking, and finish floor

Know what every post, bracket, and stringer anchors into. Wood framing usually needs added blocking; concrete may need scanning before drilling, especially if post-tensioning is possible; steel needs compatible connections. Installed finish flooring, underfloor heating, and waterproof membranes all change how posts are mounted and what can be drilled.

Existing demolition, interior access, and delivery

Removing an existing stair or railing creates dust, disposal, and repair work. Long stringers, center columns, and glass crates need a clear delivery route; tight stairwells, upper floors, and finished interiors may need protection, extra labor, or lifting equipment.

Manufacturer drawings, engineering, approvals, and permits

Expect shop drawings for review and approval, and engineering where the product or jurisdiction requires it. Ask how many revision rounds are included and who submits for permit. Code adoption and amendments vary; see the code guide for what to verify.

Installation, finish coordination, and maintenance

Decide early who installs: the manufacturer’s crew, an authorized installer, your general contractor, a local installer, or yourself for suitable kits. Sequence finishing so treads and metal are protected. Plan maintenance: cable re-tensioning, glass cleaning, wood refinishing, and coating touch-up.

Printable checklists

Print any checklist without an email address. Each one prints on its own.

Complete stair checklist

Railing-only project checklist

Spiral stair checklist

Level-guard project checklist

Sources

  1. Keuka Studios stair measurement guideManufacturer · Which stair measurements manufacturers typically ask for. Accessed October 14, 2026.
  2. Viewrail terms of service (drawings, revisions, and order scope)Manufacturer · An example of how one manufacturer defines drawing approval, revisions, and what an order covers. Accessed October 14, 2026.
  3. 2021 International Residential Code, Chapter 3 (Building Planning)Model code (official) · Full 2021 IRC stair (R311.7), guard (R312), and spiral-stair model provisions quoted in the code guide. Accessed October 14, 2026.
  4. Fortress project-planning toolsManufacturer · An example of manufacturer planning tools for railing and framing projects. Accessed October 14, 2026.

See all sources