Price per m² or per room: which is better for painting?

Neither method is better in every case. Pricing per m² is useful for large, regular areas. Pricing per room is simpler for small homes or one-off jobs. The most important thing is to know what is inside that price, whichever method is used.

How pricing per m² works

With this method, the painter calculates the area of walls and ceilings and multiplies it by a unit rate. It is common in flats and houses with large areas and smooth walls.

The advantage is the clear logic. If the area is bigger, the price goes up. It makes quotes easier to compare, as long as they all measure the same thing.

The risk is the measurement. Some painters measure only the floor of the home, others measure the walls. The results are very different. Always ask: m² of what?

How pricing per room works

Here, each room has a price. The living room costs one amount, the bedroom another, the bathroom another. It is easy to understand and to adjust. If you only want to paint two rooms, you know straight away what it costs.

The drawback is that rooms with the same name can be very different. A small living room and a huge one are not the same amount of work. If the price is the same, someone is losing or gaining too much.

What about a lump sum?

Many painters give a fixed price for the whole job. It is simple, but it only works if the quote describes clearly what is included. Ask for the list of rooms and tasks, even when the price is a lump sum.

When to use each one

Large home with smooth walls and few obstacles: pricing per m² usually works well.
Small flat or just a few rooms: pricing per room is simpler.
Job with a lot of repairs: a lump sum with the work described, or a price per task.
Work on ceilings, doors or skirting boards only: price per item or per linear metre.

What to always ask

Is the measurement of walls, ceilings or floor?
Are ceilings included in the price per m²?
Are repairs and primer included?
Do doors, skirting boards and door frames count separately?
Does the price change if problems come up during the job?

A reputable painter will explain the method without any problem. If the answer is confusing, make a note and compare with others.

A simple example of how to measure

Imagine a bedroom 4 metres long, 3 wide and 2.5 high. The four sides add up to 14 metres. Multiplied by 2.5, the walls come to 35 m². The ceiling is 12 m², because it is the same as the floor. If a painter measures only the floor, they talk about 12 m². If they measure walls and ceiling, they talk about 47 m². The same bedroom, two very different numbers.

That is why a price per m² can only be compared with another if the basis of measurement is the same. Always ask before comparing.

Tip: To compare different methods, ask each painter to convert the quote into a lump sum and a list of tasks. That puts everything on the same basis.