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, 3-bathroom duplex of 298 m², built in 1999. Located on rua Alexandre Herculano, 23, Casal de Cambra parish, Sintra municipality, Lisbon district. This duplex features two spacious terraces and a dedicated wine cellar, enhancing its appeal for entertaining and relaxation.
The valuation. The property is listed at €589,900, which is €63,995 (10.8%) below the fair value of €653,895. This indicates that the asking price is subvalued compared to current market standards.
Fair value modelled at €653,895 from the area baseline, adjusted for condition and location. Asking €589,900 sits €63,995 (10.8%) below — the upside to fair value.
Asking €589,900 versus the rua Alexandre Herculano, 23 area baseline of €931,250 (€3,125/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 78/100 (Condition 75 · Materials 82 · Room dimensions 78). Above-median finish quality lifts fair value versus a baseline unit needing CapEx.
Neighbourhood score 71/100 (Housing Market 75 · Amenities 65 · Economic 80 · Tenant Quality 65). Strong amenities and housing-market momentum support a premium to baseline.
rua Alexandre Herculano, 23
Area baseline €931,250 + condition +€13,969 + location +€49,588 = modelled fair value of €653,895 (€2,194/m²), a €63,995 (10.8%) gap versus the €589,900 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| rua Alexandre Herculano, 23 | Subject | €589,900 | €1,980 | — | 75 | 71 |
| Ramada e Caneças · f3624f | Active | €470,000 | €4,052 | 104.7% | 75 | 71 |
| rua de Viseu | Active | €375,000 | €2,885 | 45.7% | 76 | 75 |
| avenida Amália Rodrigues, 51 | Active | €495,000 | €3,018 | 52.5% | 74 | 69 |
| Pontinha e Famões · 023b08 | Active | €420,000 | €3,158 | 59.5% | 80 | 77 |
| Median comp | €445,000 | €3,088 | 56.0% | 76 | 73 |
Long-term rental The property at €589,900 is appealing for long-term rental given its strategic location near Lisbon, providing a steady demand from families seeking comfortable housing. With a fair value of €653,895, this translates to a 10.8% gap that suggests strong potential for rental income appreciation over time. Buy-and-hold Investing in this duplex could yield positive returns in the long run, as the fair market value exceeds the listing price, indicating significant potential for value growth in the coming years. The property’s good condition rating of 78/100 supports a buy-and-hold strategy, as it is likely to require minimal immediate investment to maintain. Family rental This duplex's spacious layout and favorable location make it ideal for families, which aligns well with community amenities and local infrastructure. The 71/100 neighborhood rating enhances its appeal, making it likely to attract reliable tenants and maintain occupancy rates in a family-oriented rental market.
Tenant turnover risk The tenant stability score of 65/100 indicates a higher likelihood of tenant turnover, which could result in increased vacancy rates and potential income loss.
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