Annemasse · Lyon · All of France
Yourhouse share
Professional subletting, Airbnb management, house-share management. We run your property at our own expense. No cleaner to schedule, no guest to answer, nothing to fix on a Sunday night.
What it actually costs
Nobody mentioned that when you bought. A short-let property isn't an investment you park money in: it's a part-time job with no set hours and no one to cover for you.
One booking means around thirty messages. The door code at 11 pm. The missed train. The guest who finds the TV badly tuned. Answer too slowly and the listing slides down the rankings.
Two departures on the same day, the cleaner cancelling at 6 pm, and there you are changing sheets before a 7 pm arrival. It's the number one cause of three-star reviews — and a three-star review costs you for months.
Without dynamic pricing you're too expensive in quiet weeks and far too cheap during a trade fair or a local event. You never see it, because lost income doesn't show up anywhere.
Every one of these has a fix. What's missing isn't the fix: it's someone whose actual job is to handle it for you.
Three ways to hand us your property
An owner who wants to sleep at night and an owner who wants the maximum do not pick the same plan. Everything else — cleaning, listings, guests, repairs, the 11 pm phone call — we take on in all three cases.
We become your tenant.
Professional subletting
You stay the landlord, we run everything.
Short-let hosting
A large property earns more when it's divided.
Managed room by room
You want to keep running it yourself. We audit your listing, your rates and your calendar, we hand you the written findings, and you apply them on your own. No mandate, no commission.
See audit and advisoryYou don't own the property yet. We find it, we cost it, we refurbish it and we put it into service, from the first viewing to the first night let.
See property sourcingWhat changes
On the left, a perfectly decent property, let unfurnished, earning its rent and nothing more. On the right, the same space rethought for furnished letting: layout, lighting, bedding, styling. Drag the handle.
Fit-out projection generated from the property's own photograph. It is not a photograph of completed work.
That figure comes out of a full calculation, line by line, with its assumptions on screen and the cases where it isn't worth doing. The whole thing sits on the estimate page.
Run the numbers on my propertyThe invisible work
A listing goes online, money lands at the end of the month: that is all an owner ever sees of a short let. In between sits a full-time job. We have written the inventory out, task by task, without rounding anything off.
How it goes
Every step has a deadline. If we miss it, you're entitled to say so.
Fifteen minutes on the phone: where the property is, its size, its condition. We tell you straight away whether your local council allows what you have in mind — sometimes the answer is no, and it's better to know now.
A written estimate: expected gross income, running costs, taxes, our fee, and what actually lands in your account. Compared against what the same property would earn on a standard long let. No commitment.
We come and see the property: condition, equipment, real potential. That is when we put a figure on either the rent we can guarantee you, or the income to expect under management.
Contract, photographic inventory, furnishing if needed, professional shoot, listing written and published, self check-in installed, council declaration and registration number obtained.
Transfer, itemised statement, and a report on what happened at your property: nights booked, average rate, callouts, reviews received. Without having to ask.
Regulation
Most owners aren't compliant and don't know it. The rules tightened fast, and they don't apply the same way from one council to the next.
We check these points for your specific council before we even make you an offer. If your property can't be run the way you pictured, you'll know on the first call.
General information, current as of 19 August 2026, sourced from official texts. Not personalised legal advice.
How we fit out a property
Light, warm materials, nothing superfluous. That is what we look for when we furnish a property, and what we advise an owner who is about to start renovation work.
Talk about my projectReference images and interior renders. These are not photographs of the properties Cosy'Part manages.
The proof
The written commitment
If after three months the arrangement doesn't suit you, for whatever reason, you leave. Under full management and house share, we refund the fees we took over those three months. Under guaranteed rent, where there is no fee, we release the lease with no penalty and the rent already paid to you stays yours. You don't have to explain yourself.
Three months is the trial period. The thirty days' notice applies afterwards, at any time: they are two different things. Full terms in the agreement. Nothing buried in small print.
Our story and our commitmentsThe film
Three services, one aim: your property earns without you having to deal with it.
What owners say
What held me back was the fear of unpaid rent and damage. Since we signed, the transfer lands at the same point every month and I've stopped thinking about it. I don't think I've opened my banking app to check since the third month.
Vanessa
Studio flat · Annemasse
Honestly, I didn't know a registration number was required, or that my council had its own rules. They handled the paperwork and explained what applied at my address. I could have been fined without ever knowing why.
Karim
Two-bedroom flat · Annemasse
What held me back was the fear of unpaid rent and damage. Since we signed, the transfer lands at the same point every month and I've stopped thinking about it. I don't think I've opened my banking app to check since the third month.
Vanessa
Studio flat · Annemasse
Honestly, I didn't know a registration number was required, or that my council had its own rules. They handled the paperwork and explained what applied at my address. I could have been fined without ever knowing why.
Karim
Two-bedroom flat · Annemasse
I expected to find the flat worn down. It was the opposite: they repainted one bedroom at their own expense, because their guests are demanding. The property is worth more than when I handed it over.
Brian
One-bedroom flat · Lyon
What I dreaded was something going wrong while I'm far away. There was a water leak on a Saturday: I found out once the plumber had been and the guest had been rehoused. They sent me the photos and the invoice, with no mark-up. I didn't have to decide anything.
Isabelle
Three-bedroom flat · Lyon
I expected to find the flat worn down. It was the opposite: they repainted one bedroom at their own expense, because their guests are demanding. The property is worth more than when I handed it over.
Brian
One-bedroom flat · Lyon
What I dreaded was something going wrong while I'm far away. There was a water leak on a Saturday: I found out once the plumber had been and the guest had been rehoused. They sent me the photos and the invoice, with no mark-up. I didn't have to decide anything.
Isabelle
Three-bedroom flat · Lyon
I live six hundred kilometres from my studio. Before, every problem meant a phone call, finding a tradesman, a day lost. Now I get a statement, and when something breaks I hear about it once it's been fixed.
Sophie
Furnished studio · Ville-la-Grand
I'd had a bad experience with an agency that billed everything as an extra. Here the figure is written into the lease and it hasn't moved. When they called out a plumber, I received the original invoice, with no mark-up on it.
Thomas
Studio flat · Gaillard
I live six hundred kilometres from my studio. Before, every problem meant a phone call, finding a tradesman, a day lost. Now I get a statement, and when something breaks I hear about it once it's been fixed.
Sophie
Furnished studio · Ville-la-Grand
I'd had a bad experience with an agency that billed everything as an extra. Here the figure is written into the lease and it hasn't moved. When they called out a plumber, I received the original invoice, with no mark-up on it.
Thomas
Studio flat · Gaillard
Frequently asked
French management companies typically charge between 15 % and 30 % of rental income, clustering firmly around 18 to 25 %. The rate depends mainly on scope: remote management without cleaning sits at the bottom of the range, full management at the top.Market survey, August 2026
Yes, with thirty days' notice. Your platform accounts are open in your name from day one, so you leave with the listing, the photographs and the review history. Some operators create the listing under their own name and keep it: always check this point.
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, 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
Next step
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.
Free. No commitment. No automated follow-ups.
