A building plot in the Riviera hinterland costs between about 175 and 600 euros per square metre in 2026. Roquefort-les-Pins sits near the floor of that range and Valbonne near the ceiling, with Mougins, Biot and Chateauneuf-de-Grasse in the middle. Those are land-only numbers. They come before you connect the parcel to water, power and drains, and before any building work starts.

For a typical plot of 1,000 square metres, that spread means a raw cost of roughly 175,000 euros in Roquefort-les-Pins against around 600,000 euros for the same surface in central Valbonne. The gap is wide because two things move at once. Finished property prices are higher near Sophia Antipolis and the prettiest villages, and buildable land near those same places has run short. Add connection costs of 5,000 to 15,000 euros, a development tax that changes from commune to commune, and construction at 2,500 to 4,000 euros per square metre for a good villa, and the finished number climbs fast.

Our short answer for 2026 buyers is that plots are getting rarer, not cheaper. The national push to slow soil artificialisation, known as ZAN, is reaching local planning documents across the Alpes-Maritimes. Communes are tightening what can be built and where. If you want land, the search is harder than it was three years ago, and the parcels that clear every check command a premium. The rest of this report breaks the figures down town by town, walks through the costs between a plot and a permit, and shows where we think the real value sits.

Why Land Costs Less Than the House on It

Buyers new to the hinterland often expect land to track the headline price per square metre they see for houses. It does not. A house in Valbonne sells for around 6,011 euros per square metre of living space in 2026. A building plot in the same commune averages closer to 600 euros per square metre of ground. Those two numbers measure different things. One is finished living space with walls, a roof, a pool and a garden already in place. The other is bare ground that still needs a permit, services and a build.

The link between the two runs through what agents call the residual land value. A private buyer or a developer works backwards. They take the likely sale price of the finished villa, subtract the cost to build it, subtract fees, taxes and a margin, and what is left is what the land can bear. In a commune where finished villas sell well, the residual value is high, so land is dear. In a commune where resale is softer, the same surface of ground is worth less because the house it will carry sells for less.

This is why Opio is worth a second look. Finished houses there reach about 6,750 euros per square metre, among the highest in our eight villages, yet land averages near 222 euros per square metre. The reason is supply. Opio still has parcels with slope, olive terraces and room to build, while Valbonne has very little flat, serviced, central ground left. Scarcity, not desirability alone, sets the land figure. The lesson for buyers is that a high house price does not always mean expensive land, and a low land price does not always mean a cheap commune. You have to read the two figures together, and then read the supply behind them.

Land Prices by Town in 2026

The table below gives our working figures for buildable land across the eight communes, drawn from aggregated agency and notaire data for the first half of 2026. Treat them as a midpoint. A flat, serviced plot with a view near a village runs well above these averages, and a sloped or poorly placed parcel runs below. Across the Alpes-Maritimes as a whole, buildable land averages around 349 euros per square metre, with recorded sales ranging from about 129 to more than 1,287 euros per square metre.

Commune	Land approx. EUR/m2 (2026)	Finished house EUR/m2	What sets the figure
Valbonne	~600	~6,011	Tightest supply, Sophia premium
Mougins	~485	~5,970	Golf sectors and village both short
Biot	~417	~5,850	Village and Sophia side differ widely
Chateauneuf-de-Grasse	~323	view-led	Open southern view plots cost more
Grasse	~267	~4,245	Most land choice, lowest built prices
Opio	~222	~6,750	High resale, land still available
Le Rouret	~209	family-led	Larger plots, quiet demand
Roquefort-les-Pins	~175	space-led	Big plots, low density, equestrian zoning

Two patterns stand out. Land is dearest where serviced, central plots have run out, which is the Valbonne and Mougins story. And the towns with the cheapest land per square metre, Roquefort-les-Pins and Le Rouret, are the ones that sell space rather than postcode, with larger plots and lower density. A low land price per square metre does not always mean a cheaper project, because those parcels tend to be bigger and need more groundwork. Read the price next to the plot size and the zoning, never on its own.

The ZAN Squeeze on Buildable Land

The single biggest change to the land market in the hinterland is not a price move. It is a planning one. France has set a goal known as zero net artificialisation, or ZAN, which aims to balance newly built-on ground against renatured ground by 2050. The 2023 framework set hard intermediate targets. A 2025 reform called the loi TRACE softened the timeline, removing a 2031 milestone and pushing the heavier obligations toward 2034. The direction has not changed. Communes must consume less new land over time.

For the Alpes-Maritimes, this reaches the local planning documents, the PLU and PLUi, which are being revised through 2025 and 2026 to fit the new ceilings. In practice some parcels once marked for future urbanisation, the AU zones, are being returned to agricultural or natural status. Ground that a seller assumed was buildable five years ago may not carry a permit today. That is the squeeze. Supply of genuinely constructible land is falling while demand from international and Sophia-linked buyers holds firm.

The effect on price runs one way. When buildable land becomes scarcer and demand stays steady, the parcels that remain constructible get dearer. We already see it in the gap between the asking price for a serviced plot with a clean certificat d'urbanisme and the much lower figure for ground whose status is uncertain. Our advice is plain. Never assume a plot is buildable because it is empty and for sale. The planning status is the asset, and in 2026 that status is harder to get and worth more than it was. We expect this to keep a floor under serviced, permitted plots even if the wider market cools, because no amount of softening demand creates new constructible ground.

What Moves One Plot Above Another

Two plots in the same commune at the same surface can differ in price by half. Here is what does the moving. Slope comes first. A flat or gently graded plot is far cheaper to build on than a steep one, where retaining walls, deep foundations and access ramps add tens of thousands of euros before the house begins. Many hinterland parcels sit on restanques, the old olive terraces held by dry-stone walls. They look lovely and they complicate the groundwork.

Constructibility is the second driver. The PLU sets how much of a plot you may cover, the emprise au sol, and how much floor area you may build. A 1,500 square metre plot zoned for light density may only allow a 200 square metre house, while a smaller plot in a denser zone allows more. Buyers who look only at total surface miss this. The number that matters is the buildable floor area, not the size of the garden.

Then come exposure, view and services. South-facing ground with an open view toward the sea or the hills carries a clear premium, and a north-facing plot in a dip does not. A parcel already connected to water, power, drains and a made road saves both money and months. An unserviced plot far from the network can cost 15,000 to 30,000 euros just to connect. Access matters too. A plot reached by a shared private lane with unclear rights of way is worth less than one with its own frontage on a public road.

None of this shows in the price per square metre headline, which is why the headline alone is a poor guide. We have seen two parcels on the same hillside in Chateauneuf-de-Grasse, a few hundred metres apart, trade at prices that differ by 40 percent because one was flat, serviced and south-facing and the other was steep, raw and shaded. The square metre price told you almost nothing. The plan, the slope and the certificat told you everything.

The Costs Between a Plot and a Permit

The land price is the start of the bill, not the end. Before you build, the plot usually needs servicing, which the French call viabilisation. The total runs from about 5,000 euros for a plot already beside the network to 15,000 euros for a more involved connection, and isolated parcels can reach 30,000 euros. The table below shows the typical parts for 2026.

Item	Typical cost 2026	Notes
Water connection	~1,200 EUR	Higher if the main is far
Electricity (Enedis)	from ~500 EUR	Rises with distance over 30 m
Mains drainage	3,000 to 8,000 EUR	Usually the biggest single item
Gas (if used)	500 to 1,500 EUR	Many hinterland builds skip it
Development tax	varies by commune	Communal, departmental and regional parts

Where there is no mains drainage, which is common on larger hinterland plots, you fit an individual treatment system, a fosse and a filter bed. That adds its own cost and needs approval from the local sanitation service, the SPANC. On top of servicing sits the taxe d'amenagement, the development tax, charged when your permit issues. It has three parts set by the commune, the department and the region, so the figure changes from village to village. There can also be a drainage connection charge, the PFAC, of roughly 2,000 to 4,000 euros.

Budget all of this before you fall for a plot. We have watched buyers stretch to the land price and then find that servicing and taxes add another 20,000 to 40,000 euros before the architect has drawn a single line. The plots that look like bargains on a per square metre basis are very often the ones where these costs are highest, because cheap land tends to be far from the network and steep enough to need heavy groundwork. Cheap to buy is not the same as cheap to build.

Town by Town: Where the Land Is

Valbonne carries the highest land price in our eight villages, near 600 euros per square metre, because central, serviced plots have all but run out and Sophia Antipolis sits on its doorstep. Most of what trades now is either a tear-down sold for its land value or a rare division of a larger garden. Mougins follows at around 485 euros per square metre, with the golf sectors and the village both short of supply and the same tear-down pattern in the older quarters.

Biot averages about 417 euros per square metre, but the figure hides two markets. Plots near the medieval village and the Sophia-Saint-Philippe side carry a premium, while ground further out is cheaper. Chateauneuf-de-Grasse, near 323 euros per square metre, is a view market. A plot with an open southern view toward the Bay of Cannes commands far more than a parcel in a dip, so the average understates the good plots and overstates the rest.

Grasse offers the most land choice and the lowest built prices, with land near 267 euros per square metre, which makes it the value entry for anyone willing to build above the perfume town. Opio sits near 222 euros per square metre despite high resale, because olive country still has parcels to sell. Le Rouret, around 209 euros per square metre, trades on larger family plots and quiet demand. Roquefort-les-Pins has the lowest land price per square metre at about 175 euros, but its plots are large and often zoned for horses and low density, so the low per-metre figure usually buys a big, groundwork-heavy project rather than a small cheap one.

One thread runs through all eight. The closer a plot sits to a working village centre and to Sophia, the dearer and rarer it is. The further out and the steeper, the cheaper per metre and the more you spend turning it into a home. There is no free lunch in the hinterland land market, only a choice about where you carry the cost.

From Land to Finished Villa: The Full Number

Here is how the parts add up for a realistic project. Take a 1,000 square metre plot in Chateauneuf-de-Grasse at 323 euros per square metre. The land alone is around 323,000 euros. Notaire and registration fees on land run higher in percentage terms than on a built home, near 8 percent, so add roughly 26,000 euros. Servicing and the development tax might add 20,000 to 35,000 euros depending on the parcel.

Now the house. A good new villa in the hinterland costs between 2,500 and 4,000 euros per square metre to build in 2026, before pool and grounds, with the higher end for architect-led, high-specification work. A 180 square metre villa at 3,000 euros per square metre is 540,000 euros of construction. Architect and engineering fees add roughly 10 to 12 percent. A pool, terracing and planting can add 80,000 to 150,000 euros on a sloped plot.

Run the totals and a self-built 180 square metre villa on a mid-priced plot lands somewhere between 1.0 and 1.3 million euros all in, depending on slope, specification and how much groundwork the parcel demands. Compare that with buying a finished equivalent villa in the same commune, which often sells for a similar number or a little more, and the maths of building yourself only works if you want a specific house, you can carry the time and risk, or you find land below the going rate.

For most buyers, building is a choice about control, not a clear discount. The people for whom it pays are those with a precise brief the resale market does not offer, those buying in a commune where finished villas sell at a strong premium so a new build holds its value, and those who turn up a plot that is mispriced against its constructibility. Everyone else should weigh the eighteen to twenty-four months of project time against the simpler path of buying a house that already stands.

Our Honest Read

Our view in mid-2026 is that land is the tightest part of the hinterland market and the part most exposed to planning risk. If your goal is simply to own a villa near Sophia or in one of the prettier villages, buying a finished house is usually the calmer route, and not much dearer. Building makes sense when you have a clear brief the resale market does not offer, or when you find a plot whose price has not caught up with its constructibility.

On where to look, we keep coming back to three names. Grasse, for buyers who want the most land for the money and do not need the Valbonne postcode. Opio, where high resale values mean a self-build can hold its worth and where land still trades. And Roquefort-les-Pins or Le Rouret for those who want space and accept a bigger groundwork bill in exchange for a low price per square metre. Valbonne and Mougins land is for buyers who must be in those communes and accept they will pay the top of the band, often for a tear-down.

The risk we watch closest is the certificat d'urbanisme. With ZAN reaching local plans, a plot that looks buildable can lose that status in a PLU revision. We would not commit to land without a current, positive certificate and a clear read of where the commune sits in its planning review. Get that right and a plot is a sound asset. Get it wrong and you own a field with a nice view.

If we had to call a direction for the next two years, it is this. Serviced, permitted plots in the good villages hold their value or rise, because there are fewer of them each year. Raw, uncertain land sits longer and trades at a discount that reflects the work and the risk the buyer takes on. The middle ground, decent plots with fixable issues, is where a patient buyer with good advice can still do well.

Before You Buy a Plot: A Checklist

Run these checks before you sign anything on a building plot in the hinterland. They take a few weeks and save years of regret.

Pull a current certificat d'urbanisme operationnel from the mairie. It tells you what you can build, rather than only confirming the plot exists. A simple information certificate is not enough.
Read the PLU zoning for the parcel and ask whether the commune is mid-revision under ZAN. Ask directly whether the zone is at risk of reclassification.
Confirm the buildable floor area and the emprise au sol, not the plot surface. Ask what house size the rules actually allow.
Check servicing. Is the plot connected to water, power and drains, or will you pay 15,000 to 30,000 euros to connect it?
Test the ground. A geotechnical study, the etude de sol G2, is required and tells you what foundations the slope and soil demand.
Check access and rights of way. A shared lane with unclear servitudes can stall a build for months.
Budget the full stack. Land, fees, servicing, development tax, study costs and construction, before you decide the plot is affordable.

Our last word is the one we give every buyer. The land price per square metre is the least useful number in the deal. What matters is what you may build, what it will cost to make the plot ready, and whether the planning status will still stand when your permit lands. Check those three and the headline figure falls into place. Skip them and the cheap plot becomes the expensive mistake.

Frequently Asked Questions

A building plot in the hinterland costs roughly 175 to 600 euros per square metre in 2026, depending on the commune. Roquefort-les-Pins is near the bottom at about 175 euros, Valbonne near the top at about 600 euros, with Mougins around 485, Biot around 417 and Grasse around 267. These are land-only averages, before servicing, taxes and construction.

Roquefort-les-Pins has the lowest land price per square metre at about 175 euros in 2026, followed by Le Rouret near 209 euros and Opio near 222 euros. A low price per metre does not always mean a cheaper project, because these communes sell larger, lower-density plots that often need more groundwork and longer connections to the network.

Land is cheaper per square metre because it measures bare ground, while a house price measures finished living space with walls, a roof, a pool and a garden in place. The two link through residual land value: the finished sale price minus build cost, fees, taxes and margin is what the land can bear. High house prices and scarce supply, as in Valbonne, push land up, while available supply, as in Opio, keeps land moderate even where houses sell high.

ZAN, zero net artificialisation, is the French policy aiming to balance newly built ground against renatured ground by 2050. The 2025 loi TRACE softened the timeline but kept the direction. For buyers it matters because communes are revising their PLU through 2025 and 2026, and some plots once zoned for building are being returned to agricultural or natural status. Always check a plot's current planning status before buying, since an empty plot for sale is not proof it can be built on.

After the land price you pay servicing, called viabilisation, of about 5,000 to 15,000 euros, and up to 30,000 on isolated plots. Mains drainage is the biggest item at 3,000 to 8,000 euros, with water near 1,200 and electricity from 500. You also pay the taxe d'amenagement, which varies by commune, a possible PFAC drainage charge of 2,000 to 4,000 euros, notaire fees near 8 percent on land, and a required soil study. Budget 20,000 to 40,000 euros beyond the land before construction.

Usually not by much. A self-built 180 square metre villa on a mid-priced plot lands between about 1.0 and 1.3 million euros all in, counting land, fees, servicing and construction at 2,500 to 4,000 euros per square metre. A finished equivalent in the same commune often sells for a similar figure or a little more. Building pays when you want a specific house, when you find underpriced land, or when strong resale values protect a new build, not as a guaranteed discount.

Check five things first: a current certificat d'urbanisme operationnel from the mairie, the PLU zoning and whether it is being revised under ZAN, the buildable floor area and emprise au sol rather than just the plot size, the servicing status and connection cost, and the ground via a G2 soil study. Also confirm access and rights of way. The planning status is the real asset, so never assume an empty plot for sale can actually be built on.