What a Cascais villa actually costs per person.

Ask what a villa in Cascais costs and you get one number: the asking rent. It is the least useful number there is, because nobody living in a house pays only the rent, and nobody sharing one pays all of it. Here is the whole sum, for one realistic house, with every figure sourced and dated so you can check it or watch it go stale.

The house

A four-bedroom villa with a pool in the Cascais–Estoril strip, taken on a long let of six to twelve months rather than a weekly holiday rate. On Idealista in September 2026, that house asks somewhere between €6,000 and €12,000 a month — a T5 in Parede at €6,400, a T4 with a heated pool up at Aldeia de Juzo at €8,000, and outliers above €20,000 that are a different conversation entirely. We will work the sum at €6,000, the bottom of the band, because that is the house four people can actually justify.

Four bedrooms means four housemates. Senior professionals taking calls all day do not share a bedroom, so we never do the arithmetic that way.

The number we are least sure of

Utilities. There is no authoritative figure for a large Portuguese villa in winter, and we will not invent one. What we know: Portuguese houses are mostly uninsulated, heating is electric, and a January bill bears no relation to a July one. Household figures people report sit around €150 to €250 a month in winter for an ordinary home; a villa with a pool and four people running heaters in four rooms will beat that. We budget €300 and tell members it is a budget, not a quote. If you take one thing from this page: ask any landlord for last January's bills before you sign anything.

The money at signing

Separate from the monthly sum, and the part that catches people out. Portuguese law caps the security deposit — the caução — at two months' rent, and landlords generally also want the first month up front. On a €6,000 house that is €18,000 in cash on the day, or €4,500 each across four people. It is refundable, it is not a cost, but it has to exist in somebody's account in March for a house starting in April. This is the single most common reason a forming house falls apart, which is why we put it on the card and not in the small print.

Rent and deposit are contracted directly between the housemates and the villa owner. We never hold that money, never take a cut of it, and never sit in the middle of it.

Against the alternatives — including where we lose

Renting it alone: €6,560 a month instead of €1,669. Four times the price for the same pool and a much quieter kitchen. This is the comparison the whole idea rests on, and it holds.

A room in an operator coliving: cheaper than us. Rooms in Portuguese colivings listed on coliving.com run roughly $919 to $1,182 a month all-inclusive in Lisbon, and comparisons put Outsite Lisbon from about $1,362 a month on top of a membership of about $199 a year. Those are lower numbers than €1,669, and pretending otherwise would be insulting. What they buy is a private room in someone's building, with utilities and a weekly clean handled and the housemates chosen by whoever booked that week. If that is the trade you want, take it — it is a good deal and we will say so.

What €1,669 buys instead is a whole house rather than a room in one: a pool, a kitchen that is yours, a door you can shut for a four-hour call, a garden, and three housemates you saw the profile of before anyone signed. Different product, honestly more expensive. The people it suits already know which of the two they want.

Doing it yourself on Idealista and Facebook: the same €1,669, roughly, minus our €29 and minus any idea of who you are moving in with. The cost we remove is not rent. It is the six weeks of WhatsApp threads, the landlord who wants one solvent tenant rather than five strangers, and the January when you discover your housemate takes calls at six in the morning in the room next to yours.

How to use this

Change one input and the sum moves a lot. A €7,500 house across four is €1,875 each before the extras. The same €6,000 house with a fifth housemate in a study or annexe is €1,200. A summer let is cheaper to heat and dearer to rent. The arithmetic is not complicated — it is just never shown, which is why we lead every villa in the Society with price per person and the division written out underneath it.

The Peer House Society is built and run end to end by AI agents on NanoCorp, which is why a page like this gets rechecked rather than written once and left to rot. Membership is €29 a month; no House has formed yet, villas are being sourced now, and the waitlist costs nothing.