What size is a tax-free pool?

Installing a swimming pool at home is a dream that many families aspire to: enjoying the summer, adding value to their home, sharing fun times together... But very quickly, one question arises: "Will I have to pay more taxes if I install a swimming pool?" 

The answer is not always obvious, because taxation depends on several criteria: the size of the pool, its type (in-ground, semi-inground, above-ground), whether it is permanent or removable, and sometimes even the area where your property is located.

In this article, Aboral Piscines provides a comprehensive overview to help you see things clearly before finalizing your project.

Understanding swimming pool taxation

Before even talking about dimensions, it is important to understand why some pools are taxed and others are not. A pool is not just a place to swim: for the government, it is a structure that can affect the value of your home.

What is a taxable swimming pool?

A swimming pool is considered taxable when it is fixed to the ground and cannot be moved without major construction work. This is the case for inground poolsand semi-inground or shells placed on slabs. 

These basins are then added to the cadastral rental value of your home, i.e., the estimated value that the tax authorities use to calculate certain local taxes.

Result: the property tax on your home increases.

Which taxes are affected?

There are three main taxes associated with owning a swimming pool:

• Property tax : this is calculated each year based on the cadastral value. A swimming pool, even a medium-sized one, can add several hundred euros to the bill.
• The development tax : this is a one-off tax, paid in the year following the completion of the work. The amount depends on the surface area of the pond and a scale set by the state and the local authority.
• The housing tax : this no longer applies to primary residences, but remains applicable for certain secondary residences. If you own a vacation home with a swimming pool, it may therefore be taken into account.

Key point: a swimming pool is first and foremost a luxury item, and as such, it is included in the calculation of local taxes as soon as it is considered a permanent structure.

What is the maximum size of a swimming pool that is not subject to tax?

This is the question everyone asks: " How much space do I need to ensure that my pool is not subject to tax?" " The answer is clear: a pool with a surface area of 10 m² or less is exempt from tax.

The threshold explained simply

Below 10 m², your pool is considered too small to affect the assessed value. In this case, it is exempt from property tax and development tax. 

It is this threshold that makes the difference between a tax-neutral project and a project that results in additional taxes.

What does that mean in practical terms?

Some typical dimensions for visualization:

• 3 × 3.33 m, a cozy little square,
• 4 × 2.5 m, a rectangular shape ideal for small gardens,
• 5 × 2 m, an elongated format that already allows you to enjoy a real swimming area.

These mini-pools remain true relaxation areas, often equipped with modern systems (counter-current swimming, heating, lighting), while avoiding taxation.

Exceptions to remember

Please note, however, that even pools smaller than 10 m² may be subject to tax. This is the case if they are installed in a listed site or a protected area, where the PLU (Local Urban Planning Plan) imposes stricter rules. 

Another special case: pool enclosures. Even if your pool is smaller than 10 m², installing an enclosure taller than 1.80 m requires you to apply for a building permit. In some cases, this construction may have a tax impact, as it is considered an extension of the dwelling.

What administrative procedures should be planned for?

Installing a swimming pool is not just a matter of taxes. You must also comply with certain urban planning regulations.

At city hall: declaration or permit?

• For a pool ≤ 10 m²: no formalities are required, unless your property is located in a listed site or subject to strict local urban planning regulations.
• For a pool measuring between 10 and 100 m²: a prior declaration of work is mandatory.
• For a pool > 100 m² or with a cover higher than 1.80 m: you must submit a building permit application.

These steps enable the city hall to verify that your project complies with the local urban planning regulations.

Taxes: the 90-day rule

If your pool is taxable, you must declare it to the tax authorities within 90 days after the work is completed. 

This is an essential step, as it allows you to benefit from a temporary property tax exemption for two years.

What if you don't report it?

The administration may recalculate the assessed value of your home, apply an adjustment, and add penalties. In other words, it is better to declare on time to avoid unpleasant surprises.

What is the real impact on your taxes... and on the value of your home?

The effect on property tax

A 20 m² swimming pool can add several hundred euros per year to your property tax. The exact amount depends on several criteria: the surface area of the pool, the type of pool (in-ground, semi-inground, permanent above-ground) and, above all, the municipality where your home is located, as each local authority applies its own rates. 

The larger and more permanent the pool, the greater its impact on the cadastral rental value is greater.

The impact on property value

On the positive side, we must not forget the effect on property value. Having a pool can increase the value of your home by 5 to 20% depending on the region and market conditions. It is therefore a real asset when it comes to reselling, often offsetting the additional tax cost. 

In other words, even if you pay more local taxes, your property increases in value and becomes more attractive to future buyers.

Not to mention that by declaring your pool to the tax authorities within 90 days of completion of the work, you can benefit from a property tax exemption for two years. This little boost helps to lighten the tax burden at the outset and offset part of the initial expense.

At Aboral Piscines, we assist our customers in choosing their prefabricated pool, taking into account not only their desires but also the tax implications. Because a pool is not just about fun... it's also a project that needs to be planned intelligently.

FAQ - What you need to know

→ Is a 9.5 m² swimming pool really tax-exempt?

Yes, a 9.5 m² swimming pool is tax-exempt, as it remains below the legal threshold of 10 m². However, please note that if it is built on land located in a classified site or protected area, it may require planning permission.

→ What happens if I slightly exceed 10 m²?
The rule is strict: above 10 m², the pool is considered taxable and must be declared.

→ Are semi-inground pools affected? 
Yes, semi-inground pools are taxable once they exceed 10 m². Even if they are not completely inground, they are considered fixed and permanent, and are therefore included in the calculation of the cadastral value of your home.

→ Can the development tax be avoided? 
Yes, the development tax can only be avoided if the pool is less than 10 m² or if it is above ground and removable. In all other cases, the development tax is automatically payable.

→ How can you take advantage of the exemption?

To benefit from a two-year property tax exemption, simply declare your swimming pool to the tax authorities within 90 days of the end of the work. This deadline is mandatory: after this period, you will lose your right to this reduction.