Stairs & Railing Cost Calculator

About $4,015 in wood with a new 14-ft railing and two newel posts — inside HomeGuide's $1,900–$5,000 range for a straight flight. The same flight in glass treads runs about $9,120, because structural glass treads price at $250–$550 per step installed.

A complete stainless-cable system with quality posts runs roughly $120–$195 per linear foot in materials (ViewRail, Aug 2026 pricing; budget aluminum-post systems start near $60), and about $2,520 installed for a 14-ft stair run once labor is added. Posts are part of the system price, so unlike wood you are not buying newels separately.

Build to IRC basics: risers max 7¾ in, treads min 10 in with uniform dimensions, at least one handrail 34–38 in above the tread nosings, a graspable profile (circular 1¼–2 in or equivalent), guards at 36 in where the drop exceeds 30 in, and baluster or cable spacing a 4-inch sphere cannot pass through. Cable infill must stay under 4 in even when a person leans on it — that is why pros use stiff posts and properly tensioned cable.

For the railing, yes — iron installs around $110/ft versus about $60/ft for plain wood, so the same flight prices out at roughly $5,170 in iron versus $4,015 in wood. The stair structure itself is much closer: metal pans and frame run about $210/step installed against $175/step for wood.

Yes — if the carriages and treads are solid, a railing-only job on a typical 13-step flight runs about $1,740 in wood or $2,520 in cable, installed. It is also the fastest scope: one to two days on site, no permit in most towns, since you are not altering the structure.

It saves about $585 on the reference flight ($3,430 versus $4,015) and keeps the house livable during the work. It only works when the stringers are sound — spongy treads, squeaks everywhere, or a cracked carriage mean the skin is hiding structural problems.

Like-for-like replacement of an interior flight usually needs no permit, but changing the layout, cutting a new opening in the floor, altering an egress stair, or removing a guard typically triggers one — and some cities permit any structural stair work. If a permit is pulled, expect the inspector to check exactly the numbers in the code FAQ above: riser uniformity, handrail height and grip, and the 4-inch sphere rule are the most-failed items on new railings. Your contractor should pull the permit; this estimate excludes permit fees. Railing-only swaps, staying in the existing locations, are the scope least likely to need one.

Straight-flight rebuilds run 8–16 labor hours per HomeGuide — usually 2–3 days on site with a demo day first; a retread is the fastest full-looking refresh at 1–2 days since the carriages stay; re-railing is 1–2 days. Excluded: landings beyond one (roughly $300–$800 each), curved or flared stairs (custom, $5,000–$10,000+), carpet runners, stair lighting, drywall and paint repair around the stairwell, and engineered plans. One timing note: order cable and glass rail systems ahead of demolition — they are fabricated to your stair's measurements and typically need a few weeks of lead time.