Why does the square-metre figure matter so much?
Because every paving price on this site is a rate per square metre. The cost of block paving per m², the repair rate for sunken pavers and the renovation rate for worn surfaces are all multiplied by the area. An error of ten square metres on a driveway changes the total by ten times the rate, before IVA is added.
That is also why the area in a quote should be clearly labelled as measured or estimated. A first quote from photos may use your own figure. Before work starts, the area is measured again on site, and the invoice follows that measurement. If your figure was close, nothing changes; if it was not, you know why the number moved.
Getting the measurement roughly right yourself has another advantage: when you compare quotes from different contractors, you can check whether each one has priced the same surface. A quote that assumes far more or far fewer square metres than your sketch deserves a question.
How do I measure a simple rectangular area?
Measure the length and the width in metres and multiply them. A driveway 12 metres long and 5 metres wide is 60 m². Use a long tape measure, measure along the edges where the paving will finish, and write each figure on a rough sketch so you can check it later.
- Draw a simple sketch of the area as seen from above.
- Measure the longest side and the side at right angles to it.
- Multiply length by width to get the square metres.
- If the width varies, measure it at both ends and in the middle and use the average.
- Round the result to the nearest whole square metre.
A tape measure along the ground is more reliable than pacing it out or reading figures off a map application. If you are not on site, ask someone who is to take two or three measurements and send them with the photos. Even one confirmed dimension helps us scale the rest from the pictures.
How do I measure an L-shaped or irregular area?
Split it into rectangles and triangles, measure each one separately and add the results. Almost any outdoor area, from a villa entrance with a turning bay to a patio wrapped around a house, can be broken into a handful of simple shapes.
| Shape | Formula | Example |
|---|---|---|
| Rectangle | length × width | 8 m × 4 m = 32 m² |
| Right-angled triangle | base × height ÷ 2 | 4 m × 3 m ÷ 2 = 6 m² |
| Circle | 3.14 × radius × radius | radius 2 m ≈ 12.6 m² |
| Half circle | 3.14 × radius × radius ÷ 2 | radius 2 m ≈ 6.3 m² |
Take an L-shaped patio as an example: one part is 8 by 4 metres, the other 5 by 3 metres. That gives 32 plus 15, so 47 m². For a curved edge, imagine the closest rectangle and add or subtract an approximate slice; a few square metres of error on a curve is acceptable for a first quote.
Around a pool, measure the outer rectangle of the paved surround and subtract the water surface. A surround of 10 by 7 metres around a pool of 8 by 4 metres is 70 minus 32, so 38 m². Pool surround design questions themselves are the subject of our sister site, for example paving around a swimming pool.
What should I leave out of the measurement?
Leave out every part that will not receive pavers. People often measure from wall to wall and forget that part of the space is a planted bed, a step or a manhole cover that stays in place. Including those areas inflates the quote and makes comparisons misleading.
- Planted beds, tree pits and lawn areas that will remain unpaved.
- Steps and raised thresholds, which are priced differently from flat paving.
- Large inspection chambers or fixed structures, such as a built-in barbecue base.
- Pool water surface and any coping that is not being replaced.
- Areas belonging to the community or the street, unless they are part of the agreed work.
If you are unsure whether to include a zone, measure it separately and note it on the sketch. A quote can then show it as an optional line. This is common on community jobs, where a shared path may or may not be included depending on what the owners' meeting decides.
How are kerbs and garden paths measured?
Kerbs are measured in linear metres along the edge, not in square metres. Walk the perimeter where a kerb or edge restraint will sit and add the lengths, leaving out sections against a wall or an existing edge that will be kept. On labour-only jobs kerbs are always a separate line, so this figure matters.
Garden paths are paved surfaces like any other: multiply the length by the width. A path 15 metres long and 1.2 metres wide is 18 m². If someone quotes a garden path cost per linear metre, convert it by dividing by the path width, so that it can be compared with a price per m². Paths usually have kerbs on both sides, which doubles the linear metres.
For paths and patios in other materials, such as natural stone or porcelain, the price per m² is set individually in the quote. Our published turnkey rate refers to 10×20×6 cm concrete pavers, as explained on block paving cost per m².
Does a slope change the square metres?
Slightly. Measured on a plan, a ramp looks shorter than the surface you actually walk on. On gentle slopes the difference is negligible; on steep driveway ramps it becomes noticeable. Measure along the ground surface itself, and mention in your note that the area slopes, so the quote can take both area and gradient into account.
The slope affects the price in other ways too. Steep surfaces need careful falls for water, firm edge restraint and sometimes more work on the base, which is why slope is listed among the factors that move the price of paving. A low-angle photo along the ramp helps us judge it from a distance.
A useful habit is to note the difference in height between the top and the bottom of a ramp, even approximately, by comparing it with steps or a wall beside it. Together with the length you have measured, that gives a fair idea of the gradient. It does not replace a check on site, but it helps decide in advance whether extra drainage or edge work is likely to appear as a separate line in the quote.
What does my measurement mean for the price?
Once you have the area, multiplying it by the published rate gives a first figure. A 20 m² block paved patio on the turnkey rate is 20 × 84 €, so 1.680,00 € net and 2.032,80 € with IVA at 21 %. The same area on labour only is 320,00 € net, plus materials and kerbs you supply.
| Measured area | Turnkey, net | Sunken repair from, net | Renovation, net |
|---|---|---|---|
| 20 m² | 1.680,00 € | 600,00 € | 300,00 € |
| 45 m² | 3.780,00 € | 1.350,00 € | 675,00 € |
| 90 m² | 7.560,00 € | 2.700,00 € | 1.350,00 € |
These are direct multiplications of the published rates, before IVA and before any separate lines for kerbs, waste or access. For a rounded band that takes the type of work into account, enter your figure in the paving cost calculator. Then send us a photo and the approximate m² – free, no-obligation quote.
Frequently asked questions
How do I calculate square metres for paving?
Multiply the length by the width of each rectangular part in metres and add the parts together. For triangles, multiply base by height and divide by two. Leave out planted beds, steps and fixed structures that will not be paved, then round to the nearest whole square metre.
How much does a 20 m² block paved patio cost?
On our turnkey rate of 84 € per m² plus IVA, 20 m² is 1.680,00 € net, or 2.032,80 € with IVA at 21 %. Labour only for the same area is 320,00 € net, with materials and kerbs supplied or priced separately. Access and waste can add separate lines.
Should I include the area under a car port or gate?
Yes, if it will be paved. Measure everything that will receive pavers, including the strip under a gate or a car port. Leave out any part where the existing surface stays, and mark doubtful zones separately so they can appear as optional lines.
Do you measure again before starting the work?
Yes. Before work starts, the area is measured on site and the final invoice follows that measurement. Your own figure is used for the first quote, which states clearly whether the area was measured or estimated from photos.
How do I measure a curved patio?
Divide it into a rectangle plus a curved slice. For a semicircle, multiply 3.14 by the radius squared and divide by two. For a gentle curve, estimate the closest rectangle and adjust. A small error on curves is acceptable in a first quote.
Are kerbs measured in square metres?
No, kerbs are measured in linear metres along the edge. Add up the lengths of each side that needs a kerb and leave out sections against walls or existing edges that will be kept. Paths often need kerbs on both sides.
How do I compare a price per linear metre with a price per m²?
Divide the price per linear metre by the width of the path in metres. A path 1.5 metres wide priced per linear metre costs that figure divided by 1.5 per square metre. Then compare it with other quotes priced per m².
Can I use the area from my property deeds?
You can mention it, but plot or built areas in property documents rarely match the paved surface. They include buildings, gardens and other zones. Measure the actual area to be paved, or send photos with one confirmed dimension so we can scale it.
Does the area for a renovation include walls or steps?
A surface renovation is priced per m² of the flat surface treated. Steps, vertical faces and kerbs are treated as separate items if they are included. Mention them in your note, with a photo, so the quote can list them on their own lines.
What if my measurement turns out to be wrong?
Nothing dramatic happens. The rates in the quote stay the same and are applied to the area measured on site. If the difference is significant, you are told before work starts, together with the corrected total, so you can confirm.