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 233 m², built in 1985, energy rating E. Located on rua das Casas Novas, 1, Mafra parish, Mafra municipality, Lisbon district. The outdoor space features a large terrace with sea views, perfect for entertaining, alongside two independent annexes that can be converted for rental income or guest accommodation.
The valuation. The asking price of €598,000 is significantly above the fair value of €471,897, resulting in an overvaluation of €126,103 (21.1%). This suggests that the property may not be a prudent investment at the current listing price.
Fair value modelled at €471,897 from the area baseline, adjusted for condition and location. Asking €598,000 sits €126,103 (21.1%) above — overpriced versus fair value.
Asking €598,000 versus the rua das Casas Novas, 1 area baseline of €763,308 (€3,276/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 75/100 (Condition 72 · Materials 78 · Room dimensions 75). Above-median finish quality lifts fair value versus a baseline unit needing CapEx.
Neighbourhood score 55/100 (Housing Market 55 · Amenities 50 · Economic 60 · Tenant Quality 50). Strong amenities and housing-market momentum support a premium to baseline.
rua das Casas Novas, 1
Area baseline €763,308 + condition +€1,092 + location +€9,231 = modelled fair value of €471,897 (€2,025/m²), a €126,103 (21.1%) gap versus the €598,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| rua das Casas Novas, 1 | Subject | €598,000 | €2,567 | — | 72 | 55 |
| Mafra · 6d55d3 | Active | €598,000 | €4,302 | 67.6% | 74 | 58 |
| Carvoeira · 96c6bc | Active | €590,000 | €3,391 | 32.1% | 65 | 66 |
| Mafra · 4b8f84 | Active | €840,000 | €3,559 | 38.7% | 80 | 53 |
| Mafra · 82c819 | Active | €495,000 | €2,912 | 13.5% | 68 | 67 |
| Median comp | €594,000 | €3,475 | 35.4% | 71 | 62 |
Long-term rental The property’s gross yield of 3.1% is below the expected return for the area, indicating that it may be overpriced given the fair value of €471,897. Furthermore, the neighborhood's rating of 55/100 suggests that tenant interest might be limited, impacting long-term rental viability. Value-add renovation While the property is rated 75/100 for condition, the 21.1% gap from fair value suggests that any potential improvements may not sufficiently close this gap, rendering it overpriced. Additionally, the moderate urban influence implies that excessive renovations may not significantly enhance property appeal or market value in this suburban context.
Tenant turnover risk The low tenant stability score of 50/100 indicates a higher likelihood of tenant turnover, which can lead to increased vacancy rates and lost rental income.
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