Buying property in Cascais and Estoril as a foreigner (2026): neighbourhoods, prices and total costs

Where to buy in Cascais and Estoril

Cascais municipality has four parishes. The coast from Cascais town to São Pedro do Estoril is one parish, Cascais e Estoril; Parede sits in Carcavelos e Parede; Alcabideche and São Domingos de Rana lie inland. Prices below are idealista asking prices for August 2026 and INE medians actually paid over the 12 months to March 2026 (INE parish figures as republished by a third party). No price series exists for Quinta da Marinha, Birre, Areia or Aldeia de Juzo on their own.

Area	Character and property types	Price evidence	Tends to suit
Cascais centre	Historic town, marina and beaches; flats in older buildings, townhouses; train terminus	“Cascais” zone asking €7,146/m²; parish INE €5,459/m²	Car-free living, retirees, second homes
Quinta da Marinha	Low-density, partly gated villa estate west of town, golf courses and a hotel	No separate series; a 2-bed flat of about 154 m² was advertised at €1,290,000	Families wanting villas and golf
Birre	Residential villa area north-west of the town	No separate series	Families, villa buyers
Areia and Guincho	Rural-edge coast towards Guincho beach and the Sintra-Cascais Natural Park; villas, townhouses	A 5-bed townhouse in Areia advertised at €2,150,000	Surf and outdoor life, privacy
Torre and Aldeia de Juzo	Inland villages north of town with newer villa schemes	Juzzo Design Villas, 3–4 bed, from €2,325,000	Families wanting new-build houses
Monte Estoril	Hillside between Cascais and Estoril; older villas and flats, sea views, own station	“Estoril” zone asking €6,813/m²	Retirees, commuters
Estoril	Casino, Tamariz beach, Parque do Estoril; flats and large villas	“Estoril” zone asking €6,813/m²	Retirees, commuters, families
São João do Estoril	Residential, seafront promenade to Cascais; flats and houses	“Estoril” zone asking €6,813/m²	Families, commuters
São Pedro do Estoril	Quieter, surf beaches; a 2-bed of about 82 m² advertised at €495,000	“Estoril” zone asking €6,813/m²	Families, commuters
Parede	Denser town on the train line, more flats	Asking €5,622/m²; parish INE €4,870/m²	Lower entry price, rental investors, commuters
Alcabideche (Murches, Alcoitão, Amoreira, Alvide, Manique)	Inland, larger plots, newer estates, motorway access, no train	Parish asking €4,923/m² (+10.6% in a year); INE €4,159/m²; Murches €5,476/m²	Families priced out of the coast; needs a car

Listing examples are asking prices seen on agency websites on 24 September 2026, not sales.

What does a typical home cost?

INE figures are what buyers paid; idealista figures are what sellers ask. In Cascais the asking price usually runs 20–30% above the price paid.

Measure	Cascais municipality	100 m² home at that rate
INE median paid, Q1 2026	€5,000/m²	€500,000
INE median paid, 12 months to March 2026	€4,687/m²	€468,700
INE median paid, Cascais e Estoril parish, 12 months to March 2026	€5,459/m²	€545,900
INE median paid, homes with 4+ bedrooms, 12 months to March 2026	€5,000/m²	–
idealista asking, August 2026	€6,055/m²	€605,500
idealista asking, “Cascais” zone, August 2026	€7,146/m²	€714,600
idealista asking, “Estoril” zone, August 2026	€6,813/m²	€681,300

Buyers domiciled abroad pay more: in Grande Lisboa they paid 34.5% more per m² than domestic buyers in Q1 2026 (INE). At the very top, Porta da Frente Christie’s puts asking prices for the most expensive Cascais and Estoril homes at €20,000–35,000/m²; those are top-percentile asking prices, not sales.

Timing. idealista asking prices on the Cascais and Estoril coast have been flat to slightly down since May 2026, while inland Alcabideche and São Domingos de Rana are up more than 10% in a year. In the wider Lisbon area, sales in Q1 2026 closed an average 4.4% below the asking price (Confidencial Imobiliário, via KW Alfa). idealista changed its methodology in July 2026, so do not compare these asking prices with older idealista figures.

Who else is buying. Engel & Völkers’ 2025–26 market report says 81.3% of purchases in Cascais were by foreigners, mainly from Brazil, Russia and the United States. That is the agency’s own figure, most likely drawn from its own sales, not an official market statistic.

The total cost of buying in Cascais

Since 25 May 2026, buyers who are not tax resident in Portugal pay a flat 7.5% IMT (property transfer tax) on the whole price of a home (Decree-Law 97/2026). Residents pay the normal sliding scale; between €660,982 (main home) or €633,931 (other homes) and €1,150,853, that scale is a flat 6%. Everyone pays 0.8% stamp duty on the price, plus 0.6% on any mortgage. The government’s Casa Pronta service charges €375 for the deed and registration without a mortgage and €700 with one.

Worked example: cash purchase, no mortgage.

	€600,000 flat	€900,000 house
Non-resident: IMT 7.5%	€45,000	€67,500
Stamp duty 0.8%	€4,800	€7,200
Casa Pronta	€375	€375
Non-resident total	€50,175 (8.4%)	€75,075 (8.3%)
Resident, main home: IMT	8% − €13,763.35 = €34,237	6% flat = €54,000
Resident main home total	€39,412	€61,575
Resident, second home: IMT	8% − €12,699.89 = €35,300	6% flat = €54,000
Resident second home total	€40,475	€61,575
Extra IMT for a non-resident vs a resident main home	€10,763	€13,500

With a €450,000 mortgage on the €900,000 house, a non-resident adds €2,700 of stamp duty on the loan and pays €700 at Casa Pronta instead of €375: €67,500 + €7,200 + €2,700 + €700 = €78,100. Add your lawyer’s fee, a survey and any bank fees.

Three rules change the answer:

• Becoming resident. A buyer who becomes Portuguese tax resident within two years, or lets the home at a moderate rent, can reclaim the difference by applying within 6 months of qualifying.
• Former residents. The 7.5% rate does not apply to buyers who were Portuguese tax resident at any time before; they pay the normal scale.
• Above €1,150,853, residents also pay 7.5% flat, so the gap disappears.

Run your own figures in the buying cost calculator. IMT and stamp duty are paid before the deed.

Schools and commuting

International schools (checked on each school’s own website, 24 September 2026):

School	Location	Curriculum	Ages
St. Julian’s School	Carcavelos, Cascais municipality	English National Curriculum, IGCSE, IB Diploma and IB Career-related Programme; Portuguese bilingual section	3–18
St. Dominic’s International School	Outeiro de Polima, São Domingos de Rana, Cascais	Full IB (PYP, MYP, DP)	3–18
King’s College School, Cascais	Two sites in Cascais; campus opened September 2025	Cambridge International to Year 11; IB Diploma or A-Levels; boarding for up to 50 pupils aged 13–18	1–18
CAISL (Carlucci American International School of Lisbon)	Linhó, Sintra municipality, near the Cascais border	American curriculum, US high-school diploma and IB Diploma	Pre-K to Grade 12
TASIS Portugal	Penaferrim, Sintra municipality	IB and Cambridge IGCSE; first graduating class in 2026	Pre-K to Grade 12

CAISL and TASIS are often described as Cascais schools; both are in fact in Sintra municipality, a short drive from Cascais. Two gaps: the German School’s Estoril primary campus closes from the 2026/27 school year, after which Deutsche Schule Lissabon teaches only at its Lisbon site; and there is no French lycée in Cascais or Estoril. The nearest is the Lycée français Charles Lepierre in Lisbon.

Train to Lisbon. The Cascais line runs along the coast to Cais do Sodré. All-stops journey times from the timetable valid from 6 April 2026:

From	To Cais do Sodré
Cascais	about 40 min
Monte Estoril	about 38 min
Estoril	about 36 min
São João do Estoril	about 34 min
São Pedro do Estoril	about 32 min
Parede	about 29 min

Weekday morning trains leave Cascais every 15 minutes. Alcabideche, Birre, Quinta da Marinha, Areia and Guincho have no station; the A5 motorway links Cascais to Lisbon.

Local rules buyers should check

• Short lets (alojamento local, AL). Decree-Law 151/2026, of 30 July 2026, as reported by ECO and ATAM, gives municipalities with more than 1,000 AL registrations until 31 December 2026 to decide on a regulation, and lets them suspend new registrations once, never beyond that date. Existing registrations are not affected. We found no Cascais AL regulation, draft or suspension on cascais.pt on 24 September 2026. Do not assume you can obtain a new registration after the council decides.
• Protected landscape. The west of the municipality, towards Guincho, borders the Sintra-Cascais Natural Park, where building rules are stricter. If you plan to extend or build, check with the council before signing.
• Licensing and the 1 October 2026 deed rule. From 1 October 2026 (Decree-Law 108/2026), the deed must state whether the habitation licence was shown, declared to exist, or does not exist; if that statement is missing, either party can seek to annul the sale. Ask for the licence, and check that pools and extensions appear on the approved plans.
• Letting instead. idealista asking rents in Cascais averaged €22.8/m² a month in July 2026, up 5.8% in a year. Homes let at up to €2,300 a month qualify for a 10% tax rate on rental income from 2026 to 2029.

Finding an agent in Cascais

In Portugal the listing agent is paid by the seller and acts for the seller. If you want someone on your side, use a buyer’s agent and agree in writing who pays them: an agency cannot be paid by both buyer and seller in the same deal (Lei 15/2013). Our list of English-speaking estate agents in Cascais and Estoril gives offices, segments and AMI licence numbers, including buyer’s agents, without ranking them. For market conditions from the seller’s side, see selling in Cascais, and for the area overview, the Cascais & Estoril hub. If you later sell, see costs of selling and estate agent commission.

Key points

• Cascais homes sold for a median €5,000/m² in Q1 2026 (INE); idealista asking prices were €6,055/m² in August 2026, €7,146/m² in Cascais town and €6,813/m² in Estoril.
• Non-residents pay 7.5% IMT since 25 May 2026: €67,500 on a €900,000 house, against €54,000 for a resident. Total taxes and deed costs: €75,075 against €61,575.
• The difference can be reclaimed if you become resident within two years or let at a moderate rent.
• St. Julian’s, St. Dominic’s and King’s College are in Cascais municipality; CAISL and TASIS are in Sintra. The German School’s Estoril primary closes from 2026/27.
• Trains from Cascais reach Cais do Sodré in about 40 minutes; Quinta da Marinha, Birre and Alcabideche need a car.
• From 1 October 2026 the deed must state the habitation licence position.