Energy guide for second homes on the Côte d'Azur

Energy work on a house you visit a few weeks a year plays out differently from the same work on your main home. The place sits empty most of the time, you can't pop round when something goes wrong, and several French grants shut the door on second homes. This guide answers the questions second-home owners in the Alpes-Maritimes and Var ask us most.

French farmhouse with terrace and garden in the south of France

What makes energy decisions different for a second home?

Occupancy: a house used 4-8 weeks a year uses far less energy than one lived in year-round. Equipment sized for full-time living is usually too big for it.
Distance: when you're away, nobody reacts to a fault. Systems you can check and control from your phone, or that run without attention, are worth more here.
Grants: several French schemes are for principal residences only. Ask which ones apply before you plan a project around money you can't claim.

Do second-home owners qualify for MaPrimeRenov'?

No. MaPrimeRenov' (the state renovation grant) requires the property to be the owner's principal residence (résidence principale). A second home is out, whatever the work, the DPE (energy performance certificate) rating, or your income or nationality.

What a second home can use:

CEE grants (Certificats d'Economies d'Energie, paid by energy suppliers): no residence condition and no French tax residency needed. Your installer arranges them and they show as a deduction on the quote. Accept the energy supplier's offer before you sign the devis (written quote), or the claim can fail. The boosted Coup de pouce rates (a bigger CEE bonus for replacing a fossil-fuel boiler) are for principal residences only, so a second home gets the standard amount. See the CEE grants guide.
TVA réduite: the reduced VAT rate (5.5% or 10% depending on the work) applies to qualifying homes over 2 years old, primary or secondary.

The Éco-PTZ zero-interest loan isn't on that list. Like MaPrimeRénov', it needs the property to be your principal residence.

What heating and cooling system suits a part-time home on the Côte d'Azur?

Reversible air conditioning (pompe à chaleur air-air) is usually the most practical choice:

One system cools in summer and heats in winter.
You can switch it on from your phone a day before you arrive, instead of leaving it running all week.
Winters here are mild enough for it to cover most heating without a second system.
Fitting it is far less disruptive than underfloor heating or radiators, which matters when you manage the work from abroad.

Gas and oil systems suit long empty spells badly. They need yearly servicing, a condensing gas boiler can freeze in a rare cold snap, and arranging the service visit from abroad is a chore. A new oil boiler can't legally be fitted at all, even to replace an old one. If an older house already has gas, ask about a reversible heat pump when you renovate.

If you let the house in summer, most short-term guests expect cooling in the living areas and at least one bedroom, which usually means a multi-split. Look at what comparable lets nearby offer before you settle the size.

Does solar make sense for a second home?

Solar pays when someone uses the power. At a house occupied 4-8 weeks a year, most of the output goes to the grid, which now pays about 1.1 cents per kWh for surplus. That makes the case weaker than at a main home.

It can still work in a few cases:

The house is let for 12+ weeks a year, so more of the power is used on site.
A battery stores daytime output for the evening, when you and your guests use more.
There's a pool: the pump runs whether or not anyone is there, and solar cuts that cost.

Some owners fit panels as a long-term improvement to the property and don't count on quick payback. For prices and grants, see the solar panel costs guide.

Is an EV charger worth fitting at a second property?

It's worth it if you drive an EV when you visit, or if guests may arrive in one. A standard home wallbox is the usual choice. Its price depends mostly on the cable run from the fuse board to the parking space, and on whether it goes underground. Get two written quotes. A fast charger rarely makes sense at a second home, unless you let the house with fast charging as a selling point.

At a house, the main saving is TVA at 5.5%, which applies when an IRVE-qualified (qualified to fit EV chargers) electrician supplies and fits the charger on one invoice. The ADVENIR grant doesn't fund chargers at individual houses. It does cover shared car parks, so if your second home is a flat in a copropriété, ask the syndic (the building's managing agent) about it. The Département 06 charger grant is for principal-residence owners and landlords. A second home you don't let out falls outside it.

Before you leave the house empty, ask the electrician whether to switch the charger off at the board. Also ask whether it draws power on standby with no car plugged in.

Which permits apply to energy work on a Riviera second home?

The rules are the same as for a main home. These cases come up most for second-home owners:

Outdoor AC units: a unit visible on a facade usually needs a déclaration préalable at the mairie, which takes 1-2 months. Installers often file it; confirm it's in the quote.
Solar panels: panels visible from the street need a déclaration préalable. In protected heritage areas the rules are stricter and a full permit may be needed. Much of the coast sits in such areas, so ask the installer whether your address does before you sign.
Apartments: an outdoor unit, charger or panels in a copropriété need approval at the owners' general meeting (AG). If the next AG is months away, your project waits for it.
Near a monument: within 500 metres of a listed monument, the Architecte des Bâtiments de France reviews some exterior changes. Your mairie can tell you if this applies.

For the full picture, see what permits and approvals you need.

How do you manage contractors on the Côte d'Azur as a non-resident?

Settle quotes, choices and sign-offs in writing before your visit, so work isn't held up while you're there.
Ask each contractor whether they've worked for owners abroad, and how they'll send you progress updates.
If a grant is involved, agree in writing who files it and who chases it, before you sign the devis.
A devis you sign by email usually gives you 14 days to withdraw. If you want work to start sooner, the firm needs your written request.

Simple installs, such as a single split or a wallbox, can be done between visits with a trusted contact on site. Bigger projects (a heat pump, solar, or a renovation combining several measures) need someone on the ground. Pay them to oversee the work and attend the réception, where any defects get written down. Our guide to managing a renovation from abroad covers the contract, the payments and signing the handover by mandate.