Paint quote: factors that change price without changing area

When requesting a paint quote in Portugal, the first question is usually always the same: "how many square metres does it have?". The answer seems to define everything, but in reality it defines very little. An apartment with 55 m² of usable area may have between 80 and 100 m² of wall area to paint, and the labour for those walls can represent costs that vary significantly. What few understand before starting is that the painted area is only a starting point, never the end point.

Two rooms with exactly 12 m² can have quotes that differ by 300 or 400 euros, and both are correct. The difference is not in the professional who charges more or less, it is in the work that each surface requires. In Lisbon, Porto, Braga or Coimbra, access to the property can be difficult, with narrow stairs, no lift or distant parking1, and this also factors into the final cost.

What changes the quote when the area is the same

The illusion of the square metre as a fixed unit falls apart quickly when looking at the actual condition of the walls. The current state of the walls, whether they have cracks, dampness, mould or old paint, the number and size of the rooms, the height of the ceilings, and whether the work includes ceiling painting - all of this radically changes the effort and time required.

A smooth wall, dry, already painted two years ago with quality paint, takes half the time of a wall with damp stains, fine cracks and peeling paint. In the first, it is only necessary to lightly sand, clean and apply two coats. In the second, you need to scrape off loose paint, apply filler, sand, apply primer and only then paint. The cost of labour increases in proportion to the additional work.

Ceiling height also matters. A ceiling at 2.40 metres is simple stepladder work. A ceiling at 3.20 metres or more requires scaffolding, greater care and more time to climb, descend and reposition equipment. Labour can cost between 5 and 16 euros per square metre, depending on the type of finish and whether material is included2, but this variation reflects exactly these technical factors.

Material included or separate: the choice that changes everything

One of the biggest differences in the quote is knowing whether the value includes only labour or also includes paint, primer, fillers, sandpaper, protection, repairs and final cleaning. The choice between these two options does not only change the final number, it also changes the responsibility.

When the property owner buys the paint, they assume the risk of choosing poorly (type, quantity, quality) or buying too little. If paint runs out halfway through the job, work stops until more is obtained, and the new tin does not always have exactly the same shade. When the professional supplies the material, the quote covers all consumables and the risk passes to the executor.

The cost of quality materials, such as primer and branded paint, represents approximately 20 to 40 per cent of the total quote value. This means that in a quote of 1,200 euros to paint a two-bedroom flat in Lisbon or Porto, between 240 and 480 euros are materials. Knowing this helps you understand whether a "labour only" quote of 800 euros and another "everything included" at 1,300 euros are really that far apart.

Surface preparation: the invisible cost that determines the result

Most people underestimate the time spent before opening the first tin of paint. Protecting furniture, flooring and fixed elements consumes time and material, and in a furnished flat where everything needs to be protected, the work takes longer than in an empty room.

But the heaviest work is on the walls themselves. Cracks need to be opened, cleaned, filled with filler and sanded after drying. Damp stains require specific treatment before any paint. Preparation work such as sanding, filling and skimming increase the price by 30 to 60 per cent, but are essential for a lasting finish.

When a wall has visible mould, preparation is not optional. Painting over it without treating the cause (infiltration, condensation, lack of ventilation) only hides the problem for weeks or months. The professional who warns you of this and charges for additional preparation is not inventing work, they are preventing the property owner from having to paint everything again within six months.

Type of paint and number of coats: where the quote grows without warning

Not all paint costs the same, and not all walls need the same number of coats. There is a significant difference between economical products and washable paints with greater durability, and for areas with greater wear, washable paint may be recommended, while in rooms with risk of condensation or mould it is advisable to use a specific anti-damp product.

Changing from a dark colour to white usually requires an extra coat. The same happens when painting over very stained walls or with uneven tones. Each additional coat represents more paint, more time and more cost. In a 12 m² bedroom of walls, going from two to three coats can add 80 to 120 euros to the final quote, depending on the paint chosen.

In coastal areas like Matosinhos, Foz do Douro or the Algarve coast, the choice of paint for exteriors changes completely. Exposure to sea spray requires more resistant products, with greater elasticity and protection against salts. The cost per litre can double compared to standard paint, but durability does too.

Quotes per square metre: why the initial estimate is rarely final

When a professional presents a quote calculated per square metre without seeing the space, that value is always indicative. Two rooms with 15 m² of area can have surfaces in completely different states: one can be impeccable, the other can have cracks, dampness and three layers of old paint layered on top.

Our platform always asks for photos and videos of the surfaces before finalising any quote, precisely to avoid these surprises. Seeing the actual condition of the walls allows you to adjust the price to the reality of the work, not to a theoretical average. This protects both the property owner (who knows exactly what they will pay) and the professional (who is not stuck with an impossible value to fulfil).

When the quote is finalised after assessing real conditions - via photos, videos or a visit to the site - the risk of changes during the work decreases drastically. Both forms of assessment work in the same way: what matters is that the professional has seen the space before committing to a price.

What to do when the quote seems too high for the area painted

Before rejecting a quote for thinking the value is high, it is worth checking what is included. A complete quote should clearly indicate whether it includes material, what type of preparation is planned, how many coats will be applied and what type of paint will be used. On our platform, all these details are recorded online, visible to the customer, the professional and the platform, so there is no doubt about what was agreed.

Comparing quotes only makes sense when you compare the same service. A quote of 900 euros with washable paint, three coats, crack repair and full space protection is not competing with another of 600 euros to "paint the walls" with no further details. The second may be cheaper on paper, but end up more expensive when materials run out or the result does not last.

Payment on our platform always works the same way: 50% at the start, to reserve the date and purchase materials, and 50% at the end, after the work has been verified. This split protects both parties and ensures that no one pays the full amount before confirming that the service was completed as agreed.

How to plan your paint quote without surprises at the end

The most common mistake when planning a paint job is budgeting only for the paint and forgetting everything else. Primer, filler, painter's tape, sandpaper, protection, travel and skilled labour - it all adds up. Labour represents, on average, 60 to 70 per cent of the total cost of interior painting, which means that in a job of 1,500 euros, between 900 and 1,050 euros is human work, not material.

To avoid surprises, it is best to request an itemised quote: how much is labour, how much is materials, what is included in the preparation and what is excluded. Our platform always confirms that the professional is duly registered as self-employed or has a constituted company, so the property owner does not have to do that verification themselves.

If the property has areas with visible problems (stains, cracks, mould), it is worth warning as soon as you request a quote. Hiding defects does not lower the price, it only delays the moment when it goes up. An experienced professional detects these problems on the first visit or in the first photos, and when they were not mentioned beforehand, this generates distrust and complicates negotiation.

Painting a house in Portugal costs as much as the condition of its walls requires. The area in square metres tells you how much space will be covered, but the final quote depends on what needs to be done before, during and after opening the tin of paint. Knowing this from the start makes the whole process more transparent and less stressful for both parties.