Downspout cost calculator

Downspouts are the cheap part of a gutter job until the fitting count sneaks up. This adds the two lines that matter: pipe (downspouts × length × your $/ft) and elbows (count × your price each).

Every price is yours — off a real quote or store receipt. Nothing is hardcoded, so the number stays honest whatever prices do. The labeled band below is a sanity check, not a source of truth.

Pull your counts from the count & sizing and elbows & offsets tools, then price them here.

What this covers (and what it doesn’t)

Length ≈ wall height. A downspout drops eave to grade, so a two-story run is roughly double a single-story one — and adds height/access to any labor line.

Count fittings honestly. Elbows, offsets, straps and any extension pieces all cost money; the elbows & offsets calculator gets the elbow number right.

Material moves the price. Aluminum is the value default; copper is a premium look at a premium per-foot rate. Enter whichever you are actually buying.

What installing them costs. The calculator above prices the parts you buy. Installed — pipe, fittings and the labor to hang them — aluminum downspout runs a labeled planning band of $5–12/ft, the band in the table below. Over the 60 ft of the worked example (three 20-ft drops) that is roughly $300–720 installed. The spread is wide because it is mostly access: a ground-floor drop off a ladder sits at the bottom of the band, a second-story or staged run near the top. Where your own quote lands inside it is the question worth asking the contractor.

This is a materials planning estimate for the downspouts only — not labor, not a full install. For the whole job, use the gutter installation cost tool, or price the crew on its own with the gutter labor cost calculator. Get itemized written quotes from licensed, insured contractors before you commit.