How to estimate a gutter job by the foot, with every drop counted
To estimate a gutter job, measure every eave in linear feet, then count what footage hides: downspouts, elbows, miters and end caps. Price gutter and hangers by the foot and the counted parts each, add what the crew really costs you per hour, then divide that whole cost by one minus the margin you need. On the 160 foot ranch worked out below, that comes to $2,850, about $17.80 a foot installed. A flat per-foot rate that ignores corners and drops is how a house with eight miters loses money.
Step by step
- Measure the eaves, not the house. Run a wheel or tape along every fascia that gets gutter and write each run down separately, because one 42 foot run and two 21 foot runs are not the same job. Note the height of each eave, since second-story runs need longer ladders or staging and go slower. Sketch the roof from above and mark every inside and outside corner while you are standing there.
- Check the fascia before you price a foot. Push a screwdriver into the fascia at the low ends and behind the old spikes. Rotted wood will not hold a hanger, and replacing it is carpentry you bill separately (fascia wrap alone runs about $2.70 a foot in material). Find it on the walk and it is a line item. Find it on install day and it is an argument.
- Size the gutter and place the downspouts. A common sizing rule allows one square inch of downspout for every 100 square feet of roof, which puts a 2x3 downspout at about 600 square feet and a 3x4 at about 1,200. Plan a downspout roughly every 40 feet of gutter and at least one on every separate run. Big or steep roof planes that overshoot a 5 inch trough are the reason to step up to 6 inch K-style at $5.85 a foot against $4.35 for 5 inch.
- Price gutter and hangers per foot. 5 inch K-style gutter averages $4.35 a foot in material and hidden hangers add $2.20 a foot, so the trough alone is $6.55 a foot before a single fitting. Hangers normally go in about every 24 inches, and closer where snow and ice load the front edge. Half-round at $9.75 a foot and copper at $24 a foot are different jobs with different labor, so never quote them off your aluminum rate.
- Count the parts footage hides. Every corner is a miter at $9.60, every open end is an end cap at $2.45, and every downspout takes about three elbows at $3.65 apiece: two at the top to get back to the wall and one at the bottom. Downspout pipe is priced by the foot, $3.15 for 2x3 and $4.45 for 3x4, so a 10 foot drop in 2x3 is $31.50 before elbows. A cut-up roof with eight corners carries $76.80 in miters and an hour of sealing that a straight ranch never sees.
- Decide where the water goes at the bottom. A downspout that dumps at the foundation is a callback waiting for the first heavy rain. Carry a splash block at $7.60 or an extension at $11 on every drop, and ask whether any drop ties into an underground drain. Where expansive or collapsible soils are known, the model residential code wants roof water discharged at least 5 feet from foundation walls or into an approved drain, so find out what your jurisdiction enforces.
- Figure crew hours by story and tear-off. Two installers with a gutter machine can usually hang a simple one-story house in half a day, old gutter pulled and loaded. Second-story runs, soft ground under the ladder feet and long carries from the truck stretch that quickly. Charge those hours at a rate with payroll taxes, insurance, the truck and the machine payment already in it.
- Divide by margin, then send it with the layout. Take the parts total plus the crew cost and divide it by 0.65 if you want 35 percent: a $1,851.30 job becomes $2,848, not the $2,499 that multiplying by 1.35 gives. Put the footage, gutter size, color, downspout count and discharge points on the estimate so nobody argues later about the drop by the patio. Send it the day you measure, because gutter buyers decide fast and the tickets are small.
The gutter pricing formula
Feet of gutter times the per-foot cost of gutter plus hangers, plus downspout feet, plus counted elbows, miters, end caps and whatever sits at the bottom of each drop, equals materials. Crew hours times what an hour of crew really costs you is labor, the two together are job cost, and the price is job cost over (1 minus the margin you are after). Gutter tickets are small, so a few points matter: on $1,851.30 of cost, dividing by 0.65 gives $2,848 and a true 35 percent, while a 35 percent markup gives $2,499 and leaves you at 26 percent. The per-foot figure is for the customer. Your number comes from the parts list.
A one-story L-shaped ranch takes 160 feet of 5 inch K-style gutter and four downspouts. The gutter at $4.35 a foot is $696, hidden hangers for the same 160 feet at $2.20 is $352, 40 feet of 2x3 downspout at $3.15 is $126, 12 elbows at $3.65 is $43.80, four miters at $9.60 is $38.40, six end caps at $2.45 is $14.70, and four splash blocks at $7.60 is $30.40. Materials total $1,301.30. Two installers for five hours each, old gutter pulled and hauled, is 10 crew hours, and at $55 an hour loaded that is $550. Job cost is $1,851.30. To keep 35 percent, divide $1,851.30 by 0.65 and you get $2,848.15, so quote $2,850, which is about $17.80 a foot with the downspouts inside it.
Cost factors gutter installers price for
Height and access
A second-story eave over a walkout basement can sit 25 feet off the ground on the low side. That means bigger ladders, stabilizers, sometimes a lift rental, and fewer feet hung per hour. Price upper runs at their own labor rate instead of blending them into the easy ones.
Corners and roof shape
Miters are slow. Each one is cut, riveted and sealed by hand, and each is a future leak if it gets rushed. A hip roof with bay bump-outs can have a dozen of them in 150 feet, so count them on the sketch and give each one material and minutes.
Gutter size and metal
Moving from 5 inch to 6 inch K-style adds $1.50 a foot in material and usually means 3x4 downspouts at $4.45 a foot instead of 2x3 at $3.15. Heavier .032 aluminum shrugs off ladder dents and ice better than the standard .027 and costs more per foot of coil. Copper at $24 a foot swings with the metals market, so put an expiration date on that quote.
Fascia and roof edge condition
Soft fascia, missing drip edge and shingles that overhang too far or not far enough all change the install. Gutter apron runs about $1.60 a foot and is cheap insurance against water running behind the trough. Write rot repair as a separate allowance so the gutter price stays clean.
Guards and add-ons
Gutter guard averages $4.85 a foot in material, more than the 5 inch gutter it sits on, and adds about 74 percent to the per-foot material for gutter and hangers. Sell it as its own line with its own labor. Bundled into the per-foot price, it makes your gutter number look high next to a bid that left it out.
Frequently asked questions
How many downspouts does a house need?
A working rule is one downspout for roughly every 40 feet of gutter, and at least one for each separate run. Capacity matters as much as spacing: a 2x3 downspout handles about 600 square feet of roof and a 3x4 about 1,200. When a long run can only drain at one end, upsizing the downspout or the gutter usually beats adding a drop in the middle of a flower bed.
How much slope should a gutter have?
The usual target is about a quarter inch of fall for every 10 feet of run, toward the downspout. Runs longer than about 40 feet are often pitched from the middle toward a downspout at each end. More pitch drains faster but shows against a level fascia, so on a long front elevation most installers stay close to the minimum.
Should I charge for gutters by the foot or by the job?
Do both. Build the price from footage and counted parts, then show the customer a job total with the per-foot figure as a check. A flat rate per foot works on simple one-story houses and fails on anything with a lot of corners, tall eaves or long downspouts. On a 160 foot house with four downspouts, the downspouts, elbows, miters, end caps and splash blocks come to about $253 of $1,301 in materials, almost a fifth of the bill that a trough-only rate would miss.
What margin should a gutter company price at?
Gutter tickets are small and the fixed costs are not: a gutter machine, a box truck, coil inventory and insurance all get paid whether the day holds one job or three. Plan on a gross margin somewhere around 35 to 45 percent to cover that and still clear a profit. Get there by dividing job cost by 0.55 to 0.65, never by adding a percentage to cost.
What does software for writing gutter estimates cost?
Staxen is $59 per month for one AI employee or $149 per month for all three, and the first 7 days are free in the app. Eddie, the estimator, takes a spoken or typed description (footage, gutter size, downspouts, corners) and turns it into line items with prices. You look it over and text it, and the customer can e-sign and pay a deposit from the link. Josie books the install and sends the SMS reminders, and Ivy handles the invoice and chases it if it goes overdue.