This page lists every published source used on Design My Stair & Rail, what we took from it, and when it was last checked. Elsewhere on the site, sources are named in plain text; the links live here.

How estimates are built

Preliminary ranges combine four things: published product examples from manufacturers, installer and fabricator guidance on scope and labor, material and labor assumptions in a versioned pricing model (currently 2026.10-1, last reviewed October 2026), and concept geometry derived from your dimensions. Where no dependable published benchmark exists, a broader planning-model tier is used and labeled as such.

Estimates are planning ranges, not quotes, bids, or engineering. A manufacturer, fabricator, or installer must field-verify dimensions and price the actual project, and a qualified professional and the local authority having jurisdiction decide code compliance.

Listing a source is not an endorsement, affiliation, or partnership. No manufacturer pays for inclusion, reviews, or controls the estimates on this site. Each source was opened and checked on the access date shown; when a published figure changes, the planning model is reviewed. More detail is in the pricing methodology and on the about page.

Model code and accessibility references

Official model-code and federal accessibility publications, used as educational context and to shape the default planning profile. Local adoption, amendments, and the authority having jurisdiction control actual projects.

  1. ICC Digital Codes — current model-code textModel code (official) · Where to read current model-code editions. Local adoption and amendments still control. Accessed October 14, 2026.
  2. 2021 International Residential Code, Section R311.7 (Stairways)Model code (official) · Model residential stair concepts (width, headroom, risers, treads, landings, handrails) used as educational context and as the default planning profile. 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.What the page showed: Readable in a browser. Stair width 36 in; headroom 6 ft 8 in; riser 7¾ in max; tread 10 in min; handrail 34–38 in; guards 36 in (34 in on stair sides) where more than 30 in above the floor below; spiral 26 in width, 6¾ in tread at walkline, 9½ in riser, 6 ft 6 in headroom.
  4. 2024 International Residential Code, Chapter 3 (Building Planning)Model code (official) · The newer residential model-code edition. Values cited here are unchanged from 2021 but renumbered: stairways R318.7, handrails R320, guards R321. Accessed October 14, 2026.What the page showed: Readable in a browser. Stairways R318.7, handrails R320, guards R321; in the 2024 edition R312 is Minimum Room Areas.
  5. ADA design standards overview (ADA.gov)Federal government · Which accessibility standards apply to public accommodations and commercial facilities. Accessed October 14, 2026.
  6. 2010 ADA Standards for Accessible DesignFederal government · Stair and handrail concepts relevant to public and commercial projects (outside this planner’s residential pricing scope). Accessed October 14, 2026.

Manufacturer-published pricing and product information

Published product pricing examples, product-system options, and terms from individual manufacturers. These are examples of product packages, not neutral market-wide averages or installed-project prices.

  1. Viewrail FLIGHT floating stair pricingManufacturer · Published package pricing examples for manufactured floating stairs with treads and railing. Accessed October 14, 2026.What the page showed: Pricing “as of August 2026”; excludes shipping, tax, and installation. Example 9-ft packages about $16,000–$77,000; spiral examples $15,000–$44,000.
  2. Viewrail floating stair systems overviewManufacturer · Stringer and layout options offered by one manufacturer. Accessed October 14, 2026.What the page showed: States most projects land between $15,000 and $77,000.
  3. Viewrail cable and rod railing pricingManufacturer · Published per-linear-foot ranges for complete cable and rod railing product systems. Accessed October 14, 2026.What the page showed: Complete cable/rod systems $60–$245 per linear foot, as of August 2026; excludes shipping, tax, and installation.
  4. Viewrail glass railing pricingManufacturer · Published per-linear-foot range for complete glass railing product systems. Accessed October 14, 2026.What the page showed: $170–$540 per linear foot (post-to-post about $170–$425; frameless about $215–$540); excludes shipping, tax, and installation.
  5. Viewrail cable railing systemsManufacturer · Post, mounting, and handrail options for one cable railing product line. Accessed October 14, 2026.
  6. Viewrail stair tread optionsManufacturer · Tread species, thickness, and finish options as an example of tread package tiers. Accessed October 14, 2026.
  7. 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.What the page showed: Prices are estimates; quotes valid 30 days; delivery curbside by freight carrier; tax determined at shipment.
  8. Keuka Studios guide to custom floating stair costManufacturer · A second manufacturer’s view of floating stair cost ranges and drivers. Accessed October 14, 2026.What the page showed: Floating stairs roughly $15,000–$100,000; often $20,000–$30,000 per flight; railings about $150–$300 per foot (higher for custom); examples exclude installation; shipping about $1,500 to under $5,000.
  9. Keuka Studios guide to cable railing costManufacturer · Cable railing cost drivers from a custom manufacturer. Accessed October 14, 2026.What the page showed: Example systems about $144–$623 per foot (stairs at the upper end); $5,000 minimum order; scope (product vs. installed) not stated.
  10. Keuka Studios stair measurement guideManufacturer · Which stair measurements manufacturers typically ask for. Accessed October 14, 2026.
  11. Keuka Studios glossary of cable railing, stair, and gate termsManufacturer · Industry terminology for stair and railing components. Accessed October 14, 2026.
  12. Paragon Stairs spiral stair kitsManufacturer · Range of steel, aluminum, and wood spiral stair kit families. Accessed October 14, 2026.
  13. Paragon prefabricated metal spiral stair kitManufacturer · Published starting configurations for basic adjustable steel spiral kits. Accessed October 14, 2026.What the page showed: A 3 ft 6 in diameter steel kit for 7 ft 1 in–7 ft 11 in floor-to-floor listed at $1,190; DIY kit; freight not included.
  14. Paragon 12-foot spiral stair exampleManufacturer · How taller floor-to-floor heights change a spiral kit configuration. Accessed October 14, 2026.What the page showed: A 3 ft 6 in diameter kit for 11 ft 4 in–12 ft 8 in floor-to-floor listed at $2,209.
  15. Paragon spiral stair diameter and opening guidanceManufacturer · One manufacturer’s relationship between stair diameter and floor-opening size (product-specific, not a market rule). Accessed October 14, 2026.What the page showed: Opening = stair diameter + 2 in (e.g. 44 × 44 in up to 74 × 74 in); a 26 in clear walking path needs about a 5 ft diameter.
  16. Paragon spiral stair quick pricingManufacturer · Published kit pricing by diameter and height. Accessed October 14, 2026.
  17. Salter Spiral Stair guide to spiral stair costManufacturer · Spiral stair cost drivers (diameter, material, height, finish). Dollar figures are cited from the Salter FAQ instead. Accessed October 14, 2026.
  18. Salter Spiral Stair frequently asked questionsManufacturer · Published overall spiral stair price range ($1,000–$10,000) and opening-size guidance. Accessed October 14, 2026.What the page showed: States spiral stairs range from about $1,000 to $10,000: roughly $1,000 for a 3 ft 6 in nine-tread kit up to about $10,000 for a 6 ft three-story aluminum stair. Opening = diameter + 2 in.
  19. EeStairs Clips railing configuratorManufacturer · An example of a manufacturer-run railing configurator. Accessed October 14, 2026.
  20. EeStairs Clips railing specificationManufacturer · An example of the product-specific specification data a repeatable railing system publishes. Accessed October 14, 2026.
  21. EeStairs Clips railing product overviewManufacturer · Repeatable architectural railing systems versus one-off fabrication. Accessed October 14, 2026.
  22. Fortress project-planning toolsManufacturer · An example of manufacturer planning tools for railing and framing projects. Accessed October 14, 2026.
  23. Fortress Evolution steel stair systemManufacturer · An example of a modular steel exterior stair framing system. Accessed October 14, 2026.

Supplier and distributor sources

Component suppliers that also manufacture some products. Used as secondary context for component categories and loose pricing ranges.

  1. StairSupplies cable railing overviewSupplier / manufacturer · A second source for cable railing system options and pricing context. Accessed October 14, 2026.What the page showed: Shows “$90 – $180 per foot” without stated scope or date; used only as loose secondary context.
  2. StairSupplies glass railing productsSupplier / manufacturer · Glass railing component categories (posts, clamps, base shoe, standoffs). Accessed October 14, 2026.

Spotted a source that has changed? Email [email protected] — we would rather correct a number than defend it.