How much to charge to paint the interior of a house

"What do you charge to paint the inside of a house?" is the question with no honest one-line answer, because "the inside of a house" can mean walls in three rooms or every wall, ceiling, door, and foot of trim in a four-bedroom colonial. Same square footage, wildly different jobs.

So most painters reach for a shortcut — dollars per square foot, or a flat per-room number — and shortcuts are exactly where whole-house interiors go wrong. I paint in the Twin Cities, and the interiors that hurt are almost never the ones bid from a careful hour count. They're the ones bid from an average.

Here's how I build a whole-interior price, with a real-shaped example you can steal the structure from.

The worked example: a 2,000 sq ft interior

Say it's a 2,000 square foot two-story: walls and ceilings throughout, two coats, plus doors and trim on the main level. Occupied — furniture in every room. A two-painter crew.

Step 1 — Build the hour count from scope, not square feet

I walk the house and count by surface, because that's how the time is actually spent:

Walls, ~7,500 sq ft, 2 coats            ~55 crew-hrs
Ceilings, ~2,000 sq ft, 2 coats         ~20 crew-hrs
Doors + trim, main level                ~15 crew-hrs
Masking, furniture, floor protection     ~8 crew-hrs
Patch/prep, touch-ups, walkthrough       ~7 crew-hrs
────────────────────────────────────────────────────
                                        ~105 crew-hrs

Call it 105 crew-hours — about a week and a half for two painters. If you've bid interiors before, notice the last two lines: masking and prep in an occupied home is real production time, roughly 15% of the job, and it never shows up in a square-foot rule of thumb.

Step 2 — Cost the labor loaded

The wage isn't the cost. Payroll taxes, workers' comp, insurance, the truck — the burden stack adds 15–25% on top of what you pay. At a $35 wage with burden, my loaded number is about $43/hour.

105 crew-hours × $43 = $4,515 true labor.

Cost it at the bare wage instead and you'd carry a number about $800 lighter than reality — that gap alone is where a lot of interior margin dies.

Step 3 — Materials

Wall paint, ceiling paint, trim enamel, primer for patches, and the sundries pile (plastic, tape, paper, covers) that a whole house burns through:

~20 gal wall + ~8 gal ceiling + trim enamel + sundries ≈ $1,150.

Step 4 — Overhead share and margin

Every billable hour has to carry a slice of the fixed costs. At roughly $6/hour of overhead:

105 × $6 = $630.

Labor (loaded)          $4,515
Materials               $1,150
Overhead share          $  630
──────────────────────────────
Job cost                $6,295

÷ (1 − 32% margin)   →  $9,257
──────────────────────────────
Quote                  ~$9,200–9,500

That's about $4.60 per square foot of floor area — which, for walls + ceilings + partial trim in a Midwest metro, is squarely inside the honest range. Whole-house interiors around here run maybe $3 to $7+ per square foot depending on scope, height, colors, and condition. That range is so wide precisely because "interior" isn't one job — which is why the per-square-foot number should be the output of your estimate, a sanity check, never the input.

The interior trap: averages hide the trim

Every surface has its signature way of eating painters. Rooms have fixed setup time; exteriors have prep blowout; cabinets have process risk. Whole interiors get killed by averaging.

A per-square-foot or per-room price is an average over the houses you remember. Then you meet the house that isn't average: 1990s oak trim being converted to white enamel — every foot needs scuffing, priming, and two coats of a slow product. Eighteen doors, both sides. A two-story foyer that needs staging. Dark red walls going light gray, which is a three-coat job pretending to be two. None of that shows up in square footage, and all of it shows up in hours — sometimes doubling the labor on a house your average priced like every other.

The fix isn't a better average. It's counting the hours by surface, every time, like the walk-through above — and then writing scope so specifically that anything outside it is a priced add-on, not an argument. (How to present that number so it wins the job is its own skill.)

The second interior-specific leak: occupied homes are slower. Furniture moves twice, floors get protected daily, work sequences around the family. In my experience that's a 10–20% production hit versus an empty house. Bid an occupied home at empty-house speed and you donated a day or two before the first cut line.

Colors and coats: the quiet multipliers

Two scope questions change an interior price more than customers ever expect, so settle them at the walkthrough, not mid-job.

Color change depth. Light-over-light is the two-coat job your estimate assumes. Deep red or navy going to a pale neutral usually means a tinted primer plus two finish coats — call it 30–40% more wall labor. And a dark finish color can be its own trap: some reds and blacks cover so poorly they take three coats no matter what's under them. Ask what's going on the walls before you price what's coming off them.

Who buys the paint. When the customer wants to supply their own, I price the labor the same and put in writing that coverage problems with owner-supplied product are billable. Bargain paint that needs a third coat is not a discount you volunteered to fund — but it becomes one if the scope doesn't say otherwise.

You don't know your interior speed until you measure it

Everything above hinges on one input: how many crew-hours your crew actually takes per surface. Not mine — yours. And the only way to know it is to compare bids against clocked hours on finished jobs. Run one profit autopsy on your last interior — real hours, loaded labor, real materials, against what you collected — and you'll know whether your interior pricing works or just feels like it does. The “Did I make money?” calculator runs the teardown in a few minutes, free.

Do that on three interiors and you'll have your own production rates, which beat any number in any pricing guide, including this one.

The short version

Count crew-hours by surface (walls, ceilings, trim/doors, masking, prep) — never by average.
Load the labor: wage + 15–25% burden.
Materials, overhead share, then a real margin — 30%+ is a business, not a luxury.
Use $/sq ft only to sanity-check the finished estimate against the local $3–7+ range.
Occupied homes run 10–20% slower. Bid it.
Scope in writing; everything outside it is a priced add-on.

Run your last interior through the calculator and see what it really netted. And when you're ready for the hours to capture themselves — crews clock in per job from their phones, materials attach to the job, quoted-vs-actual sits on one screen — start free on Painter's Log: free forever for small shops, 1% on payments while you're free, 0% on Pro. No trial countdown, no credit card.

Pricing other surfaces? See a single room, an exterior, and kitchen cabinets. New to pricing entirely? Start with the beginner's method.