Gutter Cost Calculator

About $1,690 for 150 linear ft of seamless aluminum in 5-inch K-style with four downspouts on a single story ($1,352–$2,282). The model builds it from $9.00 per installed ft of run ($1,350) plus $85 per downspout ($340) — so when a bid lands far off, you can usually tell whether it's the material, the footage or the downspout count driving it. That total brackets HomeGuide's published $750–$2,300 to replace 150 ft and Fixr's $1,582 national average for the same run in galvanized steel.

For a hired installer, yes. Seamless runs $6–$20 per ft installed vs $5–$15 for sectional (HomeGuide), because a truck rolls one continuous piece on site — no joints to leak except at corners and downspouts. Sectional makes sense for short DIY runs on sheds and garages; on a live roofline every seam is a future drip stain.

One per 30–40 linear ft of gutter (HomeGuide's rule) — a 150-ft run wants about four. Each one adds $85 installed in this estimate, so dropping from four to three "saves" $85 — the cheapest place in the whole quote to lose real capacity. Skimping on downspouts is the most common false economy in gutter quotes: the trough is fine but water still overflows in a downpour, and overflow is what rots fascia and undermines foundations — repairs that cost multiples of the downspout that would have prevented them.

Bolt-on screen or micro-mesh guards add $1,200 on this 150-ft job — inside HomeGuide's $4–$12 per ft guard range and Fixr's $1,200–$2,000 whole-home quotes. Professional cleaning averages $190/yr (Fixr), so guards that eliminate cleanings pay back in about 6 years. They reduce cleaning frequency rather than eliminate it — fine shingle grit still gets through — so they pay best over tall or hard-to-ladder roofs.

Tear-off, haul-away and disposal of the old gutters (add $1–$2 per linear ft per HomeGuide; Fixr puts it at $0.65–$0.85), rotted fascia or soffit repair ($9–$34 per linear ft), downspout extensions or underground drain tie-ins, heat tape for ice dams ($550–$650 per Fixr), and permits — gutter replacement rarely requires one.

Five-inch K-style is the default on most US homes. Step up to 6-inch when the roof is large or steep, the climate dumps heavy rain, or the current gutters overflow — it moves ~40% more water for about 10% more money in this model (materials +15%, labor +5%). Only oversized 7–8-inch systems, rarely residential, reach the 'up to 2× a standard gutter' premium HomeGuide notes.

HomeGuide clocks a 150-ft job at 7–10 hours solo or 3.5–5 hours for a two-person crew. Seamless crews are faster per job because the truck extrudes the run to exact length; most whole-house installs are done in one day, then downspouts and cleanup take the last hour.

Copper on this house runs $4,690 vs $1,690 for aluminum — $3,000 more. The case is longevity and appearance: copper can outlast two or three aluminum systems (which last ~20–25 years) and never needs painting, so it pencils out mostly on high-end and historic homes where the look adds resale value. For everyone else, aluminum with a good finish is the value pick.