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 penthouse of 205 m² on the 6th floor, built in 1979, energy rating D. Located Rio de Mouro parish, Sintra municipality, Lisbon district. This penthouse features a private rooftop that offers an impressive 360-degree view, elevating outdoor living experiences with unobstructed sights of Serra de Sintra and Palácio da Pena.
The valuation. The asking price of €415,000 is below fair value, with a difference of €32,562 (7.8%). This indicates that the property is underpriced compared to its assessed fair value of €447,562.
Fair value modelled at €447,562 from the area baseline, adjusted for condition and location. Asking €415,000 sits €32,562 (7.8%) below — the upside to fair value.
Asking €415,000 versus the Rio de Mouro, Sintra, Lisbon area baseline of €609,055 (€2,971/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 78/100 (Condition 74 · Materials 79 · Room dimensions 80). Above-median finish quality lifts fair value versus a baseline unit needing CapEx.
Neighbourhood score 70/100 (Housing Market 75 · Amenities 65 · Economic 70 · Tenant Quality 70). Strong amenities and housing-market momentum support a premium to baseline.
Rio de Mouro, Sintra, Lisbon
Area baseline €609,055 + condition +€8,969 + location +€32,488 = modelled fair value of €447,562 (€2,183/m²), a €32,562 (7.8%) gap versus the €415,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| Rio de Mouro · 82c83e | Subject | €415,000 | €2,024 | — | 74 | 70 |
| Algueirão-Mem Martins · 6fb9c7 | Active | €395,000 | €2,970 | 46.7% | 75 | 71 |
| rua Vénus | Active | €185,000 | €2,056 | 1.5% | 72 | 72 |
| Algueirão-Mem Martins · 956e15 | Active | €340,000 | €3,778 | 86.6% | 68 | 71 |
| Algueirão-Mem Martins · 956db2 | Active | €430,000 | €2,966 | 46.5% | 80 | 71 |
| Median comp | €367,500 | €2,968 | 46.6% | 74 | 71 |
Long-term rental The property in Rio de Mouro presents a compelling opportunity for long-term rental with a 4.7% gross yield, indicating robust demand in this suburban area close to Lisbon. With a fair value of €447,562, the listing price of €415,000 offers a strategic advantage for investors seeking stable returns. Buy-and-hold Investing in this 4-bed penthouse aligns with a buy-and-hold strategy, as the current listing is positioned 7.8% below its fair value, providing room for appreciation over time. The proximity to Lisbon and the middle-class neighborhood ensure consistent tenant quality, enhancing long-term value. Family rental This penthouse is well-suited for family rentals, with a decent condition rating of 78/100 and a neighborhood quality score of 70/100 that appeals to middle-class families. The competitive pricing at €415,000, relative to its fair value, further makes it an attractive option for families seeking stable housing in a suburban area. Not ideal for Luxury market The property does not cater to the luxury market segment, given its suburban location and moderate condition, limiting its appeal to high-net-worth individuals. Additionally, the established pricing does not reflect the unique characteristics typically sought after in luxury properties. Not ideal for Short-term vacation rental While Rio de Mouro is close to Lisbon, the property’s attributes and neighborhood demographic are not conducive for a successful short-term vacation rental strategy. The stable middle-class environment does not attract the transient clientele that typically drives vacation rental demand. Not ideal for Student housing This property is poorly aligned with the needs of student housing, as its suburban location and family-oriented features are less appealing to the typical student demographic. The absence of nearby universities in the area further diminishes its potential for this investment strategy.
Potential Economic Decline The combined economic and tenant stability scores of 70/100 suggest a potential for economic decline that may adversely impact property value and 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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