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, 3-bathroom penthouse of 219 m², built in 2012. Located on rua do Castanheiro da Serra, 5, Queluz e Belas parish, Sintra municipality, Lisbon district. This penthouse features a private elevator access and boasts expansive outdoor spaces, including a large terrace with exceptional sun exposure and stunning views over Belas Clube de Campo.
The valuation. The asking price of €750,000 is significantly below the fair value of €998,549, resulting in a difference of €248,549 (24.9%). This presents a rare opportunity for investors to acquire this underpriced penthouse.
Fair value modelled at €998,549 from 6 comparable sales in the area. Asking €750,000 sits €248,549 (24.9%) below — the upside to fair value.
Asking €750,000 versus the rua do Castanheiro da Serra, 5 area baseline of €871,058 (€3,977/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 €871,058, adjusted for condition and micro-location, gives a modelled fair value of €998,549 (€4,560/m²), a €248,549 (24.9%) gap versus the €750,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| rua do Castanheiro da Serra, 5 | Subject | €750,000 | €3,425 | — | 80 | 76 |
| rua dos Faisões S / N | Active | €640,000 | €2,443 | 28.7% | 80 | 79 |
| rua dos Faisões, 14 | Active | €560,000 | €3,200 | 6.6% | 80 | 73 |
| rua da Mãe d'Água | Active | €798,000 | €4,640 | 35.5% | 76 | 76 |
| Queluz e Belas · 4d4350 | Active | €880,000 | €4,560 | 33.1% | 76 | 76 |
| Median comp | €719,000 | €3,880 | 13.3% | 78 | 76 |
Long-term rental This 3-bed penthouse in Queluz e Belas, listed at €750,000, presents a compelling long-term rental opportunity given its fair value of €998,549, resulting in a gap of 24.9%. With a gross yield of 3.8% and a condition rating of 82/100, the property is well-positioned to attract stable tenants in a desirable suburban location. Family rental The property’s generous space of 219m² combined with access to urban amenities makes it an attractive option for family rentals in the Greater Lisbon area. Priced below its fair value, this penthouse stands out with a robust tenant quality and a neighborhood ranking of 76/100, appealing to families seeking comfort and safety. Buy-and-hold Acquiring this penthouse for a buy-and-hold strategy can be advantageous due to its undervalued listing compared to its fair market value, providing potential for future appreciation. The 3.8% gross yield, along with the property’s strong condition and favorable neighborhood metrics, supports a strategic hold in anticipation of market growth in Sintra and the surrounding area.
Potential Economic Decline: With an economic stability score of 75/100, there is a risk that economic fluctuations could negatively impact tenant demand and rental income stability.
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Comparables, condition and location workings, yield and time-to-sell. Written up and emailed to you.
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