Painting
Room Painting Cost Calculator
Prices a single room, where the wall area is less than people assume and the detail is more.
Result
A planning estimate, not a quote. Access, the age of the equipment, what is found once it is opened up and local labour rates all move the real figure, sometimes a long way.
Get a Free Business AuditHow the calculation works
Hours times crew times rate, plus materials and the call-out. Wall area is the room perimeter times the ceiling height, less openings, and a gallon covers a few hundred square feet per coat on a sound sealed surface. That arithmetic usually shows a surprisingly small material quantity, which is why a single room is dominated by setup, protection, cutting-in and reinstatement rather than by area.
What moves the number
- Setup and protection, which is the same for one room as several.
- Cutting-in length, driven by trim, windows, doors and the ceiling line.
- Whether the ceiling is included.
- Number of coats and whether the colour is changing.
Where this one goes wrong
A single room carries the whole mobilisation, so it costs more per square foot than doing several at once, and a customer getting one room quoted and then adding a second usually finds the second much cheaper. Pointing that out is worth more than the margin on the extra room. On the practical side, the ceiling is the item to settle explicitly, since a wall-only quote on a room where the ceiling then looks tired produces disappointment, and doing it while the room is already protected is far cheaper than returning.
Before you quote
- Point out the saving from doing adjacent rooms in the same visit.
- Settle explicitly whether the ceiling is included.
- Measure cutting-in length, not just wall area.
Questions
About this calculator
Why does one room cost nearly as much as two?
Because the setup, protection, masking and cleanup is similar whether you paint one room or several, and that is a large share of a small job. Adding an adjacent room while the crew is already there is usually much cheaper per room than booking it separately.
How much paint does a room need?
Less than people expect. Perimeter times ceiling height less openings gives the area, and a gallon covers a few hundred square feet per coat on a sound surface. Most rooms take a couple of gallons for two coats, which is why material is a minor part of the price.
Should the ceiling be painted too?
It is worth deciding before the job rather than after, because doing it while the room is already protected and the crew is there costs far less than returning. Walls freshly painted against a tired ceiling is the most common regret on a room repaint.
The formula
total = hours x people x rate + parts + call-out, then sales tax
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How to use this calculator
- Hours on site (h). Enter your own figure; the page starts at 32 h.
- People needed. Enter your own figure; the page starts at 1.
- Labour rate charged ($). Enter your own figure; the page starts at $68.
- Parts and materials ($). Enter your own figure; the page starts at $520.
- Call-out or diagnostic fee ($). Enter your own figure; the page starts at $95.
- Sales tax (%). Leave at zero if you are quoting before tax.
The result updates as you type, so you can try a figure, see what it does to estimated total, and change it back. Nothing you enter is sent anywhere or saved.
A worked example
These are the figures the calculator opens with. Every number in the results column below is produced by the same calculation the page runs, so you can follow it through before putting your own figures in.
What goes in
| Input | Value |
|---|---|
| Hours on site | 32 h |
| People needed | 1 |
| Labour rate charged | $68 |
| Parts and materials | $520 |
| Call-out or diagnostic fee | $95 |
| Sales tax | 0% |
What comes out
| Result | Value |
|---|---|
| Estimated total main result | $2,791 |
| Labour | $2,176 |
| Before tax | $2,791 |
| Sales tax | $0 |
About $2,791: $2,176 of labour, $520 of parts and a $95 call-out.
How sensitive the answer is
Holding everything else steady and changing only labour rate charged, this is what happens to estimated total. It is worth knowing which of your inputs the answer actually hinges on, and which barely move it.
| Labour rate charged ($) | Estimated total |
|---|---|
| $34 | $1,703 |
| $51 | $2,247 |
| $68 example above | $2,791 |
| $102 | $3,879 |
| $136 | $4,967 |
Every other input is held at the example value while this one changes, which is not how a real job behaves. Treat it as a guide to which number matters most, not as five separate quotes.
What each figure means
- Hours on site (h)
- Measured in h, between 0 and 400, starting at 32 h.
- People needed
- A number, between 0 and 40, starting at 1.
- Labour rate charged ($)
- A money amount, starting at $68.
- Parts and materials ($)
- A money amount, starting at $520.
- Call-out or diagnostic fee ($)
- A money amount, starting at $95.
- Sales tax (%)
- Leave at zero if you are quoting before tax.
What the results tell you
| Result | What it is |
|---|---|
| Estimated total | The headline result. A money figure. |
| Labour | A money figure. |
| Before tax | A money figure. |
| Sales tax | A money figure. |
Estimating is the easy part
The jobs you never hear about cost more than the ones you mis-measure. BDEVY builds the marketing, systems and automation that bring them in.