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.
4-bedroom, 2-bathroom duplex of 107 m², built in 1937, energy rating F. Located Santo António parish, Lisbon municipality, Lisbon district. This property features a recently renovated roof with SANDWICH PANELS for superior thermal and acoustic insulation, significantly enhancing comfort while minimizing future energy costs.
The valuation. The asking price of €450,000 sits significantly below the fair value of €753,445, reflecting a substantial discount of €303,445 or 40.3%. This property is clearly underpriced, presenting an exceptional opportunity for investment.
Fair value modelled at €753,445 from 6 comparable sales in the area. Asking €450,000 sits €303,445 (40.3%) below — the upside to fair value.
Asking €450,000 versus the Santo António, Lisbon, Lisbon area baseline of €719,998 (€6,729/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 78/100 is below the parish average, reducing fair value versus a typical-condition unit.
Recent nearby listings price above the wider parish average — a hyper-local premium distinct from the parish baseline.
Base gap of €719,998, adjusted for condition and micro-location, gives a modelled fair value of €753,445 (€7,042/m²), a €303,445 (40.3%) gap versus the €450,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| Santo António · 4a431a | Subject | €450,000 | €4,206 | — | 75 | 90 |
| rua Angelina Vidal | Active | €479,900 | €6,485 | 54.2% | 78 | 79 |
| Avenidas Novas · 49b731 | Active | €800,000 | €10,526 | 150.3% | 80 | 79 |
| rua Angelina Vidal | Active | €479,900 | €7,383 | 75.6% | 80 | 84 |
| rua das Farinhas | Active | €450,000 | €8,654 | 105.8% | 78 | 84 |
| Median comp | €479,900 | €8,019 | 90.7% | 79 | 82 |
Long-term rental The 4-bed duplex in Santo António presents an attractive opportunity for long-term rental, capitalizing on the 5% gross yield in a highly rated neighbourhood. The property’s proximity to schools and central amenities elevates its appeal to quality tenants, ensuring stable occupancy rates. Luxury market As an underpriced asset in a prime Lisbon location, this duplex could fetch significant interest from buyers looking to enter the luxury market. With a fair value substantially exceeding its listing price, this property is well-positioned for appreciation and reconfiguration for high-end rentals or sales. Buy-and-hold Acquiring this duplex aligns perfectly with a buy-and-hold strategy due to its undervaluation and the potential for future valuation increases in a thriving neighborhood. Its strategic location near Lisbon’s iconic areas paired with solid tenant quality supports long-term capital appreciation and consistent cash flow.
Tenant turnover risk High tenant turnover could affect rental income stability, especially with a tenant stability score of 85/100 indicating potential for changes in occupancy rates.
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Comparables, condition and location workings, yield and time-to-sell. Written up and emailed to you.
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