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.
6-bedroom, 2-bathroom penthouse of 200 m² on the 6th floor, built in 1994, energy rating E. Located on avenida Cidade de Lisboa, 48, União das Freguesias do Cacém e São Marcos parish, Sintra municipality, Lisbon district. Noteworthy Features: The penthouse includes a cozy living room with a fireplace and enclosed terraces, providing both warmth and additional outdoor living space year-round.
The valuation. The property is listed at €500,000, which is €78,836 (13.6%) below its fair value of €578,836. This positioning indicates an attractive opportunity in the current market, categorized as underpriced.
Fair value modelled at €578,836 from 6 comparable sales in the area. Asking €500,000 sits €78,836 (13.6%) below — the upside to fair value.
Asking €500,000 versus the avenida Cidade de Lisboa, 48 area baseline of €469,304 (€2,347/m²) for a median-condition unit of this size — the gap before quality adjustments.
AI Condition Index 72/100 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 €469,304, adjusted for condition and micro-location, gives a modelled fair value of €578,836 (€2,894/m²), a €78,836 (13.6%) gap versus the €500,000 asking price.
| Reference | Status | Price | €/m² | vs subject | Condition | Location |
|---|---|---|---|---|---|---|
| avenida Cidade de Lisboa, 48 | Subject | €500,000 | €2,500 | — | 70 | 64 |
| Rio de Mouro · 82c83e | Active | €415,000 | €2,024 | 19.0% | 74 | 70 |
| rua Dona Isabel de Aragão, 17 | Active | €685,000 | €2,015 | 19.4% | 70 | 74 |
| Massamá e Monte Abraão · 1f34e3 | Active | €498,000 | €2,964 | 18.6% | 62 | 67 |
| Agualva e Mira-Sintra · f46c05 | Active | €610,000 | €2,824 | 13.0% | 75 | 72 |
| Median comp | €554,000 | €2,424 | 3.0% | 72 | 71 |
Long-term rental This property presents a compelling opportunity for long-term rental, as its price of €500,000 is approximately 13.6% below the fair value of €578,836. With a reasonable condition score of 72/100 in a suburban location with good proximity to Lisbon, it can attract steady tenants looking for spacious accommodations. Family rental As a six-bedroom penthouse, this property is ideally suited for family rentals, leveraging its size and the area's family-friendly attributes. Positioned below its fair value by 13.6%, this investment can satisfy the needs of families seeking comfortable living spaces close to urban amenities. Buy-and-hold Investing in this property for a buy-and-hold strategy makes sense given its current pricing, which is 13.6% below fair value. With an overall decent condition of 72/100, it provides an opportunity to benefit from potential appreciation over time in a growing suburban market.
Tenant turnover risk: With a tenant stability score of only 55/100, there is a significant risk of frequent tenant turnover, potentially leading to increased vacancy rates and higher costs associated with re-leasing the property.
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