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, 4-bathroom house of 400 m², built in 2001, energy rating C. Located on rua Engenheiro Carlos Santos, 18, Rio de Mouro parish, Sintra municipality, Lisbon district. This property features an expansive terrace with a Japanese garden, allowing for tranquil outdoor living, and includes a dedicated outdoor kitchen facility for entertaining.
The valuation. The asking price of €2,250,000 is significantly below the estimated fair value of €3,260,870, indicating this property is subvalued by €1,010,870, or 31.0%. This presents a lucrative opportunity for investment.
Fair value modelled at €3,260,870 from 5 comparable sales in the area. Asking €2,250,000 sits €1,010,870 (31.0%) below — the upside to fair value.
Asking €2,250,000 versus the rua Engenheiro Carlos Santos, 18 area baseline of €2,908,838 (€7,272/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 82/100 is above the parish average, lifting 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 €2,908,838, adjusted for condition and micro-location, gives a modelled fair value of €3,260,870 (€8,152/m²), a €1,010,870 (31.0%) gap versus the €2,250,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| rua Engenheiro Carlos Santos, 18 | Subject | €2,250,000 | €5,625 | — | 82 | 74 |
| rua Engenheiro Carlos Santos S / N | Active | €2,250,000 | €10,714 | 90.5% | 74 | 70 |
| rua Engenheiro Carlos Santos | Active | €2,250,000 | €7,705 | 37.0% | 80 | 77 |
| rua Engenheiro Carlos Santos | Active | €2,250,000 | €8,152 | 44.9% | 82 | 72 |
| rua Engenheiro Carlos Santos | Active | €2,250,000 | €8,152 | 44.9% | 80 | 70 |
| Median comp | €2,250,000 | €8,152 | 44.9% | 80 | 71 |
Long-term rental The property in Rio de Mouro is positioned to capture steady demand for long-term rentals due to its proximity to Lisbon and an attractive gross yield of 2%. With a fair value gap of 31.0%, this investment promises solid appreciation in the coming years. Family rental Given its size and condition rating of 82/100, this 4-bed house is well-suited for family rentals, appealing to tenants seeking spacious, quality accommodations in the suburban area. The neighborhood's decent score of 74/100 further strengthens its viability for families looking for a stable living environment. Buy-and-hold This property appears ideally suited for a buy-and-hold strategy, given its fair value being 31.0% higher than the current listing price, suggesting solid long-term growth potential. The underlying economic fundamentals of the Lisbon metropolitan area add further confidence in holding this asset for capital appreciation over time.
Economic Sensitivity With an economic stability score of 80/100, fluctuations in the economy could impact the property’s rental income, especially given the lower tenant stability score of 70/100 which indicates a potential for tenant turnover.
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