This listing includes AI condition scoring, neighbourhood intelligence, and market valuation data — giving you a complete picture before you visit. Compare rental yield, price per square metre, and location strength against the broader Portuguese market to assess whether this property fits your investment strategy.
3-bedroom, 2-bathroom duplex of 125 m², energy rating E. Located on rua Cidade de Portalegre, Algueirão-Mem Martins parish, Sintra municipality, Lisbon district. Noteworthy Features: This duplex offers exceptional countryside views with no opposing buildings, enhancing privacy and tranquility, along with a garage box and video surveillance system for added security.
The valuation. The asking price of €390,000 is significantly below the fair value of €462,695, creating a compelling opportunity for buyers. This reflects an undervaluation of €72,695 (18.6%).
Fair value modelled at €462,695 from the area baseline, adjusted for condition and location. Asking €390,000 sits €72,695 (18.6%) below — the upside to fair value.
Asking €390,000 versus the rua Cidade de Portalegre area baseline of €362,375 (€2,899/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 76/100 (Condition 73 · Materials 80 · Room dimensions 75). Above-median finish quality lifts fair value versus a baseline unit needing CapEx.
Neighbourhood score 68/100 (Housing Market 70 · Amenities 65 · Economic 65 · Tenant Quality 70). Strong amenities and housing-market momentum support a premium to baseline.
rua Cidade de Portalegre
Area baseline €362,375 + condition +€2,539 + location +€30,906 = modelled fair value of €462,695 (€3,702/m²), a €72,695 (18.6%) gap versus the €390,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| rua Cidade de Portalegre | Subject | €390,000 | €3,120 | — | 73 | 68 |
| Algueirão-Mem Martins · 001ba4 | Active | €355,000 | €2,752 | 11.8% | 74 | 74 |
| Rio de Mouro · 0901fa | Active | €359,000 | €3,324 | 6.5% | 70 | 72 |
| avenida de Fitares | Active | €340,000 | €2,252 | 27.8% | 74 | 73 |
| rua Antero de Quental, 8 | Active | €288,000 | €2,526 | 19.0% | 70 | 73 |
| Median comp | €347,500 | €2,639 | 15.4% | 72 | 73 |
Long-term rental This 3-bed duplex in Algueirão-Mem Martins presents a compelling long-term rental opportunity with a 3.3% gross yield and a fair value gap of 18.6%. Given the solid condition rating of 76/100, it is likely to attract stable tenants looking for suburban living near Lisbon. Family rental With its size and features, this property is well-suited for families seeking a comfortable suburban home. The combination of a reasonable price and proximity to amenities makes it appealing for family rentals, tapping into the neighborhood’s decent educational standards. Buy-and-hold The current market price of €390,000 for this duplex offers an attractive entry point for a buy-and-hold strategy, given its fair value estimate of €462,695. This reflects an 18.6% upside potential, which could translate into significant appreciation over time as the suburban Lisbon area continues to develop. Not ideal for Luxury market, Short-term vacation rental, Student housing.
Moderate Economic Risk Given the economic stability score of 65/100, there is a moderate risk that economic fluctuations could adversely affect tenant demand and rental income stability.
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