Written consent — yours
Permission to sublet is set out in the lease we sign. It covers both the principle and the price, as the law requires. You keep a copy.
Guaranteed rent plan
Let your flat to a company.One rent, every month.
We become your tenant. We pay you a fixed amount, agreed upfront, paid whether anyone is staying there or not. What happens inside afterwards is our business, and our risk.
The question everyone asks
«Isn't sublettingillegal?»
No. What is illegal is subletting without the owner's written consent, or charging a sublet rent per square metre above the head rent. French law doesn't ban it: it frames it.
What gave the word its bad name is tenants subletting behind their landlord's back. In 2019 the Cour de cassation ruled that sublet rents collected that way are civil fruits belonging to the landlord, who can claim every euro back. That is the exact opposite of what we do: you are the landlord, the consent comes from you, and it is written into the lease we sign together.
A capped price per square metre
The sublet rent cannot exceed the head rent per square metre of habitable area. Our margin comes from the number of nights let, never from an inflated sublet rent.
Building rules checked before signing
A building's rules may prohibit holiday letting. A valid clause overrides your consent, so we read them beforehand, never afterwards.
Systematic review of the building's rules
Council rules checked before signing
Registration number, night cap, change of use: the rules differ from one council to the next. We check yours and we carry the burden of complying.
Art. L.324-1-1 Tourism Code, art. L.631-7 Construction and Housing Code
Owner
You. The property stays yours.
to Lease + written permission to subletSigned by you, covering the principle and the price.
Cosy'Part
Your tenant. A company, a lease, a fixed rent.
to Stay agreementSigned by us. You are not a party to it.
Guest
Occupant for the stay. Every stay approved, every identity verified.
The two conditions the law sets
- Written consent — yours
- A capped price per square metre
Article 8, law no. 89-462 of 6 July 1989
Read the full article on the legal framework
General information, current as of 19 August 2026, sourced from official texts. It does not replace a solicitor's opinion on your particular situation. The lease we propose can be reviewed by your adviser before signing.
Our commitments
Seven promises,every one of them in the contract.
A commitment that isn't in the lease isn't a commitment, it's a sales line. Here are ours, and they're all in there.
Rent paid every month
The same amount, on the same date, regardless of occupancy. No arrears, no quiet season, no guest defaulting that lands back on you. You never chase anyone again.
No costs on your side
No fees, no application charges, no commission taken out of your rent. We earn on the gap between what we pay you and what the property produces. What you receive is net.
A property maintained continuously
Professional cleaning after every stay, equipment checks, small appliances and linen replaced at our expense. That isn't generosity: our guests are demanding, and a poorly kept property costs us in reviews.
Refurbishment covered
Paintwork, lighting, bedding, décor: we invest in the property while we run it. Depending on the scale, that's at our expense or shared with you, but always agreed together beforehand.
Vetted occupants
Executives on assignment, business travellers, professionals travelling for work, cross-border workers relocating. Every stay is approved, every identity verified, and a photographic inventory is taken at each turnover.
Compliant operation
Council declaration, registration number displayed on listings, tourist tax collected and remitted, night cap monitored. We carry both the workload and the responsibility.
A property you get back clean
At the end of the lease the property comes back to you cleaned, maintained, and often in better condition than when you handed over the keys. That's the mechanical consequence of the four points above.
What it changes for you
The four advantagesan ordinary tenant can't give you.
Often a higher rent
Because we run the property as a short and medium-term let, it earns more than it would unfurnished on a long let. Part of that gap comes back to you: in many cases we can offer a rent above the standard letting market. That's the whole point of the arrangement — we need you to say yes.
Getting your property back is far simpler
A lease signed with a company for its business activity is not governed by the protective regime of the 1989 law, which covers a private individual's main home. In practice: no winter eviction moratorium to contend with, no eviction proceedings dragging on for years. The exact terms are in the lease, and your solicitor can check them.
No individual arrears risk
Your tenant is a company, not a private individual whose circumstances can change overnight. No file to assess, no guarantor to chase, no rent guarantee insurance to take out — and you stop paying for it.
Genuinely zero management
No listing to write, no viewings to arrange, no inventory to carry out, no deposit to return, no service charge reconciliation to calculate, no notice period to handle. A transfer arrives, and that's it.
Side by side
Standard letting,or guaranteed rent.
Receiving the rent
Standard lettingRisk of arrears and late payment
With Cosy'PartFixed amount, paid monthly
Empty between tenants
Standard lettingYou lose the income
With Cosy'PartYou're paid regardless
Finding occupants
Standard lettingListings, viewings, files to assess
With Cosy'PartWe handle it
Occupant profile
Standard lettingVariable, hard to verify
With Cosy'PartProfessionals on assignment, vetted
Upkeep of the property
Standard lettingWear and tear on you
With Cosy'PartMaintained, sometimes refurbished at our cost
Repairs and callouts
Standard lettingYou arrange them yourself
With Cosy'PartHandled and tracked
Getting the property back
Standard lettingLong proceedings, winter moratorium
With Cosy'PartSet by the lease, outside the 1989 regime
Bills and subscriptions
Standard lettingYours, or to reconcile
With Cosy'PartCovered while we operate
Fees and charges
Standard lettingAgency, management, arrears insurance
With Cosy'PartNone. What you receive is net
Commitment length
Standard lettingThree-year renewable lease
With Cosy'PartAgreed together, more flexible
Comparison based on a standard unfurnished letting governed by the law of 6 July 1989. The exact terms of our lease are provided before any signature.
How we move forward
Five stepsand you stop hearing about it.
- Day 1
First conversation
Fifteen minutes to understand your property, its council, your situation and what you want from it. We tell you straight away whether the arrangement works where you are.
- Within 7 days
Visit and assessment
We come and see the property: condition, equipment, genuine letting potential. That's when we put a figure on the rent we can guarantee you.
- When you're ready
Signing the lease
A written lease, with permission to sublet and its price, the term, the inventory and our maintenance commitments. You can have it reviewed by your solicitor — we'd encourage it.
- Within 14 days
Going live
Furnishing if needed, photo shoot, listings created, council declaration, registration number, published across our channels.
- Every month
The rent lands
On the 10th, then every month, without you having to ask. You also get a short report on what happened in the property.
Frequently asked
Subletting: the questions we get asked
Yes, under strict conditions. Article 8 of the law of 6 July 1989 forbids a tenant from subletting without the landlord's written consent, covering both the principle and the price. Without that written consent, the sublet is unlawful.Article 8, law no. 89-462 of 6 July 1989
No. That same article 8 requires the sublet price per square metre of habitable area not to exceed the head rent. It is the model's central constraint: the operator's margin comes from the number of nights let, never from an inflated sublet rent.Article 8, law no. 89-462 of 6 July 1989
Termination of the lease and eviction. More importantly, the Cour de cassation holds that sublet rents collected without permission are civil fruits belonging to the landlord, who can demand them back in full. That's why we always require written consent before operating.Cass. 3e civ., 12 September 2019, no. 18-20.727
A company takes your property on a lease, with your written permission to sublet, pays you a fixed rent every month, then runs it as a short or medium-term let at its own risk. You receive guaranteed income with no management, no void periods and no occupancy risk.
Yes. An owner may grant a lease to a legal entity. The applicable regime depends on the agreed use: a general lease under the Civil Code, a professional lease or a commercial lease. The contract must expressly state the permission to sublet and its price.
The building's rules may restrict or prohibit furnished holiday letting, typically through an exclusive residential-use clause. A valid clause overrides the landlord's permission, so we check this before any signature, never after.
Yes, and it is now universal. The law of 19 November 2024, known as the loi Le Meur, introduced a declaration requiring registration through a national online service, applicable in every French council since 20 May 2026. The number must appear on every published listing.Law no. 2024-1039 of 19 November 2024; art. L.324-1-1 Tourism Code
Failing to declare exposes you to an administrative fine of up to €10,000. A declaration containing false information is punishable by up to €20,000. It is currently the single biggest financial risk facing an owner letting without support.Article L.324-1-1 of the Tourism Code
It falls under industrial and commercial profits and is declared on form 2042 C PRO: boxes 5NH and 5OH for an unclassified holiday let under the simplified regime, 5NG and 5OG for a classified one. We provide the annual summary you need.impots.gouv.fr
For an unclassified let, the flat-rate deduction is 30 % with a €15,000 revenue threshold — down from 50 % and €77,700. For an officially classified let it remains 50 % with a €77,700 threshold. Getting your property classified has therefore become decisive again.impots.gouv.fr, 2025 income declared in 2026
Industrial and commercial profits. French tax doctrine states that income from furnished letting falls under BIC whether the landlord is the owner or the head tenant. It is subletting of unfurnished premises that falls under non-commercial profits.BOFiP, BOI-BIC-CHAMP-40-20
Next step
Tell us where your property is.We'll tell you what it can earn.
A costed study, specific to your property and your local council. You get it within 48 working hours. Do whatever you like with it, including nothing.
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