House in Mem Martins, Algueirão - Mem Martins
House in Mem Martins, Algueirão - Mem Martins — image 2House in Mem Martins, Algueirão - Mem Martins — image 3House in Mem Martins, Algueirão - Mem Martins — image 4House in Mem Martins, Algueirão - Mem Martins — image 5
Grade A+villamid-range

House in Mem Martins, Algueirão - Mem Martins

Sintra/Colares · Lisbon Coast ·

€820,000

Asking Price (EUR)

Net yield — free account

True Net Yield (after-tax, all-in)

10.1%

True Gross Yield

75%

Occupancy

Projected Gross Revenue: €94,808/yr
Average Daily Rate: €344
+5.0% vs area baselinePortuguese-traditional style (+5%), Has pool (0%)
5-yr Capital Value: €950,605
10-yr Capital Value: €1.1M
Brixfox Score: 96.9 / 100
Comparable Properties: 7
Data Confidence: 57%
Search Radius: 4 km

True Investment Cost

Portuguese transfer tax (IMT) + stamp duty (IS) + notary + registration + legal + renovation + full furnishing & STR launch setup.

€934,845

+14.0% over asking

Asking price€820,000
IMT — Property transfer tax (investment schedule)€49,200
IS — Stamp duty (0.8%)€6,560
Notary (escritura)€1,000
Property registry€250
Legal fees (~1.5%)€12,300
Total acquisition costs€69,310
Renovation (est. €55/m² × 197 m²)
Light touch-ups — paint, fixtures, deep clean.
€10,835
(€5,910–€15,760)
Furnishing & STR launch (3bd × €4500 base, mid-range tier)
Furniture, appliances, electronics, linens, AL licence setup, launch photography.
€34,700
All-in investment (incl. renovation & furnishing)€934,845

Gross yield (asking price)

11.6%

True gross yield (all-in)

10.1%

Estimates use Portugal's investment IMT schedule (non-permanent residence). Actual notary & legal vary; budget +€500–1,000 for surveyor, due-diligence and bank-mortgage fees if financing. Renovation cost is a heuristic on property condition × m² — verify with a site visit. Furnishing uses finish-level-tiered rates covering beds, living, kitchen, electronics, AL licence, linens & professional photography. Working capital (2-3 months operating buffer) not included.

Bedrooms: 3
Bathrooms: 1
Building: 197 m²
Land: 900 m²
Style: portuguese-traditional
Condition: good
Energy Certificate: d
Private Pool

AL licence status unconfirmed

No AL licence is on record for this listing. The Lisbon Coast has no containment zones, so a new AL registration is normally obtainable — verify with the local câmara municipal before counting on STR income.

Design Features

bright yellow exteriorstone basecovered porch with archesprivate pool area

Score Breakdown

ROI
25
Visual Appeal
12.8
Ownership Security
13
Location
8.4
Land & Space
12
Rental Demand
7.54
Payback Speed
5
STR Suitability
4

Description

We present this spectacular villa set within an extraordinary 900 m² plot, fully renovated and in pristine condition, located on Rua Salvador Correia de Sá, in Mem Martins (Sintra). Benefiting from fresh paint and a new roof, this property combines modern comfort, energy efficiency (solar panels), and a private outdoor

Location

📍 38.7890°N, 9.3413°W

· Sintra/Colares, Lisbon Coast, Portugal

Confirmed on the market 6 days ago.

Listed via Idealista.pt

Price
€820,000
ReportInquire
3-bedroom freehold villa in Sintra/Colares — photo 1 of 5
agency website
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3-bedroom freehold villa in Sintra/Colares — photo 2 of 5
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3-bedroom freehold villa in Sintra/Colares — photo 5 of 5
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House in Mem Martins, Algueirão - Mem Martins

Sintra/Colares · Lisbon Coast · Ref BF-171734Source · agency website · listed 1 Oct 2026
Asking price
€820,000
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The page’s own figures, line by line · Every purchase cost and the all-in total · Occupancy and offer-price what-ifs · Portugal ownership, tax and letting rules

Bedrooms
3
Bathrooms
1
Built area
197 m²
Land
900 m²
Brixfox Score 97 · A+Financial analysis ↓

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Property details

Energy: d
Condition: good

Description

We present this spectacular villa set within an extraordinary 900 m² plot, fully renovated and in pristine condition, located on Rua Salvador Correia de Sá, in Mem Martins (Sintra). Benefiting from fresh paint and a new roof, this property combines modern comfort, energy efficiency (solar panels), and a private outdoor

Financials

What it earns, what it costs to own, and the net yield

Financial analysis
· Brixfox Standard · Non-resident · Fully managed
Fully managed is the Brixfox Standard shown on every card: a full-service manager's commission, charged on top of the Airbnb/Booking channel fees (not the cleaning cost — changeovers are funded by guest cleaning fees; you bear the residual). Self-managed drops the commission; the channel fees stay, because the platform is paid whoever manages, and you pay staff/local operations, a higher cleaning residual and your own time directly. Both scenarios divide the SAME gross revenue — the toggle changes the cost stack, not the revenue. That revenue is observed from actively-operated comps, so self-managed assumes you match their performance.Both scenarios share the same projected revenue — the toggle changes who runs the property and what that costs, not what it earns.
Net yieldNet operating income ÷ all-in investment. After local operating taxes; before home-country personal tax and financing costs. Modelled from observed market performance of comparable Airbnb listings.
Gross yield · all-in basis
Before tax in your home country and financing costs. Estimates, not financial advice.
Modelled from Airbnb listings we track across Sintra/Colares — live calendar data.

No Airbnb match on file

We have not confirmed this exact property on Airbnb, so it carries no operating history here. The figures above rest on the comparable set — a launch scenario, not a track record.

Revenue assumptions

Derived from the comparable Airbnb listings below. The headline ADR and revenue are the expected BOOKED figures — nearby asking prices corrected by our measured asking-to-booked factor (Portugal's calendar dataset is young, so this is a conservative estimate). Occupancy is the seasonality-adjusted full-year rate. The comp cards below show raw asking prices.
Expected ADR
€344
Expected booked rate (asking prices × measured booked factor)
Expected occupancy
75%
Full-year estimate, market-calibrated
Projected annual revenue
€94,808
ADR × occupancy × 365
Comp data observed in USD · converted at €0.88/$
Seasonal occupancy pattern
Peak Aug +50% · Low Dec -41%
J
F
M
A
M
J
J
A
S
O
N
D
Modelled monthly index (relative to the annual average) — replaced by measured per-market indices as calendar history matures.

Investment basis

The true all-in acquisition cost — asking price plus purchase costs, renovation and furnishing. Every yield on this page is computed against this total, not the asking price.
Adjust the figures to your deal — yields recalculate live.
Purchase price· asking
€
Acquisition costs· 8.5% of price, auto-calculated
€69,310
IMT (transfer tax, investment schedule)€49,200
Imposto de Selo (stamp duty)€6,560
Notary & registration€1,250
Legal fees€12,300
Renovation budget· Light touch-ups — paint, fixtures, deep clean.
€
Furniture & STR launch· default ≈ €10,900/bedroom
€
All-in investment
€932,845
+13.8% over asking
Fully managed scenarioSwitch the scenario with the toggle at the top of the financial analysis — it drives every figure in this section. Gross revenue is identical in both scenarios (the comps' observed performance); the Villa Scorecard and risk panels elsewhere on the page always quote the fully-managed Brixfox Standard.
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Net operating income
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Net yield on all-in investment
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Rental yield + value growth

Your net rental yield plus a yearly rise in the property's market value (land and building) that you choose. Value growth is an assumption, not data — which is why it starts at 0% and is kept out of the yield figures above.
Property value growth per year · your assumption0%
0%4% · Sintra/Colares 5-yr avg — historical, not a forecast8%
Yield + value growth
••/yr
••% net yield + 0% value growth
Value growth figures are illustrative only. Past regional price growth does not predict future performance; local supply, regulation and currency moves can materially change outcomes. Not financial advice.
Want this analysis as an underwriting report (PDF)?

The page’s own figures, line by line · Every purchase cost and the all-in total · Occupancy and offer-price what-ifs · Portugal ownership, tax and letting rules

Evidence

Where it sits, and who confirms it

Comp table: Market evidence ↑ in Financials

Location

Approximate area

Sintra/Colares · Lisbon Coast

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Verdict

Score, and what could go wrong

Brixfox Score

97A
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Risk & what-if

ScenarioOccupancyNet income /yrNet yield
-20 pts occupancy55%••••••%
-10 pts occupancy65%••••••%
Expected75%••••••%
+10 pts occupancy85%••••••%

Brixfox Standard · Non-resident · Fully managed · net yield on all-in cost · upgrade to Pro to stress-test this yield

TenureFreeholdno lease decay · no amortisation
Payback12.1 yearsfrom net rent at the expected case
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Property Underwriting Report

PDF report · one-time purchase · this property

  • The page’s own figures, line by line
  • Every purchase cost and the all-in total
  • Occupancy and offer-price what-ifs
  • Portugal ownership, tax and letting rules
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Modelled from live Airbnb calendar data around this property · operating costs per line, editable in the P&L · estimates, not financial advice.Data sources & methodology ›

ROI calculations use Brixfox Intelligence rental data from live Airbnb calendar tracking — the Lisbon Coast dataset has been live since April 2026, seasonality-adjusted to a full-year estimate with a conservative calibration while it matures. Operating costs are modelled per line (management, channel fees, cleaning, utilities, IMI, maintenance, insurance). After-tax yields deduct non-resident IRS on AL income under the simplified regime (~8.75% of gross); buyer-side IMT and stamp duty are included in the all-in cost basis. Market factors in Portugal may impact actual yields.