How to Invoice After Exterior Painting, Elevation by Elevation

Short answer: How to invoice after exterior painting, in order: net wall area by elevation with openings deducted, prep as its own priced line (wash, scrape, sand, caulk, mask), primer and spot-prime separately, then coats at roughly 350 to 400 ft² per gallon per coat, trim and fascia in linear feet, doors and windows by the piece, and any signed change orders last. Close with the color and batch record, the warranty terms, and payment due that day.

An exterior invoice that reads “Exterior painting — $6,400” invites a customer to negotiate a number they do not understand. The version that gets paid the same afternoon shows the elevations you measured, the hours you spent scraping before a drop of paint went on, and the two coats you actually applied. The general field list in what to include on an invoice covers the basics; below is what only applies when the ladders are still on the truck.

What goes on an exterior painting invoice, block by block?

Write it before you leave the property, while the elevations are in front of you.

Block	What it reads
Property and substrate	Address, plus each substrate: lap siding, stucco, brick, cedar shake, fiber cement, aluminum
Wall area	Net ft² per elevation, openings deducted, stated per side
Prep	Hours or a fixed line per task: wash, scrape, sand, prime bare wood, caulk, mask
Primer	Full prime or spot prime, product named
Coats	Number of coats per surface, product line and sheen
Trim	Fascia, soffit, rake, and corner boards in linear feet
Openings	Doors, shutters, and windows counted by the piece
Access	Two-story, three-story, ladder-only sections, steep grade, roof staging
Color record	Color name, code, sheen, and batch number per surface
Change orders	Each one dated, signed, and priced
Totals and terms	Subtotal, tax if your state taxes the labor, balance due on completion

The color record is the block painters skip and homeowners call about eighteen months later. Two lines — body color and code, trim color and code, with sheen — turns a future touch-up into a five-minute stop instead of a color-match run.

Where do the square footage numbers on the invoice come from?

From wall area, never from the home’s floor area, and measured one elevation at a time. A listing that says 1,800 ft² tells you nothing about how much siding you painted.

Take a house with a 152 ft perimeter and an average wall height of 17 ft across the two stories. That is 2,584 ft² gross. Deduct the openings — say fourteen windows and two doors totaling about 380 ft² — and the net wall area is 2,204 ft². Put that number on the invoice, broken out by elevation, because the back of the house with the walkout and the two gables is not the same job as the flat side wall.

Surface	Unit on the invoice	How it reads
Body	Net ft² per elevation	Front elevation, 640 ft² lap siding, 2 coats
Gable ends	Net ft², listed separately	Access and staging are different up there
Fascia, soffit, rake	Linear feet	168 lf fascia, 168 lf soffit
Corner boards and bands	Linear feet	96 lf, brush and roll
Doors and shutters	Each	2 entry doors, 14 shutters, removed and sprayed
Windows	Each, by sash count	14 windows, sash and casing
Deck or railing	ft², or lf of railing	Railing at 42 lf, spindles counted

One elevation, one line. A customer who questions the total looks at the elevation with the worst siding and remembers what it looked like, and that memory is doing your negotiating for you.

How do I show gallons and coats without arguing about them?

Put the coverage math on the page. Paint covers roughly 350 to 400 ft² per gallon per coat on a smooth, sound surface, and less on anything real: rough-sawn cedar, stucco, and heavy grain soak up more, and a light color going over a dark one often needs a third coat to bury it.

From the example above, 2,204 ft² of net wall at 375 ft² per gallon is about 5.9 gallons per coat, so two coats is roughly 11.8 gallons before waste — call it twelve, plus trim product. When the invoice says “2 coats, 12 gal body, 3 gal trim,” a customer who was told by a neighbor that “one coat would have been fine” now sees exactly what one coat would have saved and what it would have cost them in four years.

Say the coat count per surface, not once for the whole house. Bare wood that got primer plus two finish coats is a different line from a sound wall that got two coats over existing paint. And when a dark-to-light change forced a third coat, that is a change order, not a favor.

Why does prep get its own line instead of hiding in the price?

Because on most exteriors it is the majority of the hours, and it is invisible by the time you invoice. Labor typically accounts for something like 60 to 70 percent of an exterior job’s price, and the largest share of that labor is the work that happened before the first coat. Hide it in a single lump and you are effectively billing for paint, which is the cheap part.

Prep task	Bill it as	What the customer sees
Wash or soft wash	Fixed line per elevation	The chalk and mildew that had to come off
Scrape and sand failing paint	Hours, with ft² noted	The reason the new paint will hold
Spot prime bare wood	Fixed or per ft²	Named product, named locations
Caulk joints, gaps, and trim	Linear feet of caulk joint	The seal that keeps water out
Mask windows, roofs, walks, plantings	Hours	Two hours of plastic nobody remembers
Carpentry and rot repair	Board feet or per piece, as a change order	Discovered work, priced when discovered

Rot is the item that most often separates the estimate from the invoice. You cannot see the bottom of a fascia board from the ground with binoculars, and by the time you can, the ladder is up and the crew is standing there. Price replacement by the piece or the board foot, get it signed the day you find it, and put it on the invoice as a dated change order rather than a mystery increase.

Does the lead paint rule change what I put on the invoice?

On any house built before 1978, yes. The EPA’s Renovation, Repair and Painting rule requires firms working on pre-1978 housing and child-occupied facilities to be certified and to use lead-safe work practices once the work disturbs more than 20 ft² of exterior paint — which almost any scraping job does. That means real invoice lines: containment and ground sheeting, a certified renovator on site, HEPA cleanup, waste handling, and post-work verification.

Those are costs, and they belong on the paper as their own lines rather than absorbed into “prep.” The rule also carries recordkeeping obligations, so the signed pamphlet acknowledgment and the job documentation live with the invoice for years, not weeks. Reference the certification on the invoice itself. It is a differentiator against the crew across town who scraped a 1940s porch dry into the customer’s garden beds.

What changed between the estimate and the invoice?

Something almost always did. The job of the invoice is to make each change traceable to a moment and a signature.

Change	Where it came from	How the invoice shows it
More scraping than expected	The south elevation had failed down to bare wood	Prep hours line, with the elevation named
Rot or carpentry	Found once the ladders were up	Dated change order, per piece
Third coat	Dark red to off-white on the body	Change order, extra gallons shown
Color change mid-job	Customer decided after seeing the first elevation	Change order, plus the abandoned product
Weather remobilization	Rain shut the job down and the crew came back twice	Named line, if your contract allows it
Less work than quoted	Customer dropped the detached garage	A credit line, shown as clearly as an addition

Show the credit as prominently as the addition. Invoices that only ever move upward from the estimate train customers to fight every line; one visible credit buys the rest of the page a lot of trust. Deposits already collected show as payments applied, not as reductions in scope — the distinction between billing and receipting is laid out in invoice vs receipt.

What gets handed over at the final walk?

Walk every elevation with the customer before you present the invoice, from the ground, at the time of day the light is worst. Bring three things: the punch list you already wrote yourself, the color and batch record, and the leftover gallons labeled by surface.

State the warranty in one sentence with a term and a boundary — what it covers, how long, and what voids it, such as failure caused by underlying rot the customer declined to have replaced. That declined-repair sentence is worth writing on the invoice at the moment of decline, not at the moment of the callback.

How do I collect the balance the day the ladders come down?

Present it on site, on the phone, immediately after the walk. Residential exteriors are due on completion, and the gap between “I will email it tonight” and getting paid is measured in weeks. Show the payment link as a QR code on your screen and let them pay while standing in the driveway with fresh paint behind them.

Larger jobs run on a schedule instead: deposit at material order, a progress payment at the halfway mark or at the completion of prep, and the balance at the walk. Tie each payment to an observable event rather than to a date, so nobody argues about what percentage of a house is painted.

What should I keep after the invoice goes out?

Keep the invoice, the signed change orders, the before and after photos of every elevation, the paint receipts with product and batch, the RRP documentation on pre-1978 work, and the miles between the job and the paint store. Photos and change orders defend the price. Receipts and mileage defend the deduction, which is the same set of records described in contractor receipt organizer.

Keel is an iOS app that keeps all of it on the device — no account, no bank connection, no cloud, no login, and an App Store privacy label reading Data Not Collected. The invoice takes about a minute to build at the tailgate with your own numbering, logo, and brand color, and the payment link becomes a QR code the customer scans before you load the ladders. Paint store receipts get photographed at the counter and read on-device by Apple Intelligence, which matters when you are buying three times in a week and the batch numbers need to survive. The runs back for another two gallons get logged as mileage. Freeboard shows cash minus a tax reserve, minus the invoices you have committed, minus a buffer. Year end exports as one file, or as the Accountant Pack: a CSV plus a one-page summary PDF. The ledger is append-only and hash-chained, so nothing quietly changes after the invoice goes out. Free is $0 with unlimited invoices, receipts, and mileage; Keel Pro is a one-time $249.99 lifetime purchase rather than a subscription. When a customer stalls anyway, the sequence in how to get clients to pay is the next step.

Frequently asked questions

Should an exterior painting invoice list square footage?

Yes, as net wall area per elevation with openings deducted, not as the home’s floor area. A house listed at 1,800 ft² might have 2,200 ft² of siding on it, and the two numbers have nothing to do with each other. Per-elevation figures also let the customer connect the price to the wall they remember being in the worst condition.

How many gallons should I show on the invoice?

Show what you actually used, per surface, alongside the coat count. Coverage runs roughly 350 to 400 ft² per gallon per coat on smooth, sound substrate and drops on rough cedar, stucco, and heavy texture. Listing gallons and coats together answers the “why not one coat” question before it is asked and documents the product for the next repaint.

Do I bill prep separately from painting?

Separately, always. Prep is usually the largest block of hours on an exterior and it is invisible by the time anyone reads the invoice. Break out washing, scraping, sanding, spot priming, caulking, and masking as their own lines. A lump sum makes it look like you are charging for paint, which is the cheapest input on the job.

How do I invoice rot repair I found after starting?

As a dated change order signed the day you found it, priced by the piece or the board foot, then carried onto the invoice as its own line. Photograph the rot before replacing it. If the customer declines the repair, write the decline and its consequence on the invoice, because that sentence is what answers the callback when the new paint fails over the bad wood.

Does the EPA lead rule affect my invoice on an older house?

On pre-1978 housing it does. Firms need EPA certification and lead-safe work practices once more than 20 ft² of exterior paint is disturbed, and the containment, HEPA cleanup, waste handling, and verification are real costs that belong on the invoice as their own lines. The rule also requires recordkeeping, so keep the job documentation filed with the invoice.

When should the customer pay an exterior painting invoice?

On completion for residential work, presented on site right after the walkthrough with the payment link on your screen. Bigger jobs run on a schedule instead: a deposit at material order, a progress payment tied to an observable milestone such as prep completion, and the balance at the final walk. Tie payments to events rather than calendar dates and there is nothing to argue about.

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This article is general information, not professional or tax advice.